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TABLE OF CONTENTS powerpc.library/AllocVec32 powerpc.library/AllocXMsg powerpc.library/FreeVec32 powerpc.library/FreeXMsg powerpc.library/GetCPU powerpc.library/GetPPCState powerpc.library/PowerDebugMode powerpc.library/PutXMsg powerpc.library/RunPPC powerpc.library/SPrintF68K powerpc.library/WaitForPPC powerpc.library/AddHeadPPC powerpc.library/AddPortPPC powerpc.library/AddSemaphorePPC powerpc.library/AddTailPPC powerpc.library/AddTimePPC powerpc.library/AllocSignalPPC powerpc.library/AllocVecPPC powerpc.library/AllocXMsgPPC powerpc.library/AttemptSemaphorePPC powerpc.library/ChangeMMU powerpc.library/ClearExcMMU powerpc.library/CmpTimePPC powerpc.library/CopyMemPPC powerpc.library/CreateMsgPortPPC powerpc.library/CreateTaskPPC powerpc.library/DeleteMsgPortPPC powerpc.library/DeleteTaskPPC powerpc.library/EndSnoopTask powerpc.library/EnqueuePPC powerpc.library/FindNamePPC powerpc.library/FindPortPPC powerpc.library/FindSemaphorePPC powerpc.library/FindTagItemPPC powerpc.library/FindTaskByID powerpc.library/FindTaskPPC powerpc.library/FreeAllMem powerpc.library/FreeSemaphorePPC powerpc.library/FreeSignalPPC powerpc.library/FreeVecPPC powerpc.library/FreeXMsgPPC powerpc.library/GetHALInfo powerpc.library/GetInfo powerpc.library/GetMsgPPC powerpc.library/GetSysTimePPC powerpc.library/GetTagDataPPC powerpc.library/InitSemaphorePPC powerpc.library/InsertPPC powerpc.library/LockTaskList powerpc.library/ModifyFPExc powerpc.library/NextTagItemPPC powerpc.library/ObtainSemaphorePPC powerpc.library/PutMsgPPC powerpc.library/PutXMsgPPC powerpc.library/ReleaseSemaphorePPC powerpc.library/RemExcHandler powerpc.library/RemHeadPPC powerpc.library/RemovePPC powerpc.library/RemPortPPC powerpc.library/RemTailPPC powerpc.library/RemSemaphorePPC powerpc.library/ReplyMsgPPC powerpc.library/Run68K powerpc.library/SetCache powerpc.library/SetExcHandler powerpc.library/SetExcMMU powerpc.library/SetHardware powerpc.library/SetNiceValue powerpc.library/SetReplyPortPPC powerpc.library/SetScheduling powerpc.library/SetSignalPPC powerpc.library/SetTaskPriPPC powerpc.library/Signal68K powerpc.library/SignalPPC powerpc.library/SnoopTask powerpc.library/SPrintF powerpc.library/SubTimePPC powerpc.library/Super powerpc.library/UnLockTaskList powerpc.library/User powerpc.library/WaitFor68K powerpc.library/WaitPortPPC powerpc.library/WaitPPC powerpc.library/WaitTime powerpc.library/AllocVec32 powerpc.library/AllocVec32 NAME AllocVec32 - allocates memory which is correctly aligned (V7) CPU 680x0 SYNOPSIS memblock = AllocVec32(memsize, attributes) d0 d0 d1 void *AllocVec32(ULONG, ULONG); FUNCTION This function allocates memory via exec/AllocVec and aligns the memory block properly, so that this memory block can be shared with PPC tasks. The minimal alignment of the memory block is 32. INPUTS memsize - size of memory to be allocated attributes - the desired memory attributes (see exec/AllocMem for a description of these attributes) RESULT memblock - The address of the allocated memory block NOTES Memory blocks allocated with 'AllocVec32' must be freed using 'FreeVec32'. SEE ALSO FreeVec32, exec/AllocMem powerpc.library/AllocXMsg powerpc.library/AllocXMsg NAME AllocXMsg - allocates a message for Inter-CPU communication (V12) CPU 680x0 SYNOPSIS message = AllocXMsg(bodysize, replyport) d0 d0 a0 struct Message *AllocXMsg(ULONG, struct MsgPort *); FUNCTION This function allocates memory for a message which can be used for Inter-CPU communication. Some fields of the message are initialized. After this function was called, the message body must be created before sending this message. INPUTS bodysize - the size of the message body (max. 65535-MN_SIZE) replyport - the reply port RESULT message - The address of an initialized message (except for the message body, which must be initialized by the programmer). NOTES Calling this function is the only way allowed to create a message which can be sent to a PPC task. A message allocated with 'AllocXMsg' should be freed using 'FreeXMsg' if it is not used anymore. Since V14, it is allowed to free the messsage using 'FreeXMsgPPC' on the PPC side (which is internally done using a cross call). An Inter-CPU message must be sent with 'PutXMsg' to a PPC task. It is possible not to specify a replyport (simply set replyport to NULL). If you want to be compatible to earlier versions, you shouldn't free InterCPU messages by the foreign task. SEE ALSO FreeXMsg, PutXMsg powerpc.library/FreeVec32 powerpc.library/FreeVec32 NAME FreeVec32 - frees memory allocated with 'AllocVec32' (V7) CPU 680x0 SYNOPSIS FreeVec32(memblock) a1 void FreeVec32(void *); FUNCTION This function frees a memory block which was allocated using 'AllocVec32'. INPUTS memblock - The address of the allocated memory block SEE ALSO AllocVec32 powerpc.library/FreeXMsg powerpc.library/FreeXMsg NAME FreeXMsg - frees a message allocated with 'AllocXMsg' (V12) CPU 680x0 SYNOPSIS FreeXMsg(message) a1 void FreeXMsg(struct Message *); FUNCTION This function frees a memory allocated using 'AllocXMsg'. INPUTS message - a message allocated by 'AllocXMsg'. NOTES There were some restrictions in earlier versions using FreeXMsg. Since V14, a XMessage created by AllocXMsg can be freed either by another 68K task (if the message isn't used anymore) or by a PPC task using FreeXMsgPPC. SEE ALSO AllocXMsg, PutXMsg powerpc.library/GetCPU powerpc.library/GetCPU NAME GetCPU - gets the PowerPC CPU type (V7) CPU 680x0 SYNOPSIS CPUType = GetCPU d0 ULONG GetCPU (void); FUNCTION This function reads the PowerPC CPU type. A longword is returned with one specific bit set (see the include file 'powerpc/powerpc.i' for a description of the different CPU types) RESULT CPUType - A longword with one specific bit set. powerpc.library/GetPPCState powerpc.library/GetPPCState NAME GetPPCState - returns the state of the PPC and PPC applications (V13) CPU 680x0 SYNOPSIS PPCState = GetPPCState d0 ULONG GetPPCState (void); FUNCTION This function returns the current state of the PPC processor and the state of custom applications. A bitmask is returned with the values defined in 'powerpc.i'. RESULT PPCState - A bitmask. The following bits are supported (the description is valid if the bit is 1): PPCSTATEF_POWERSAVE - PPC is currently in power save mode. PPCSTATEF_APPACTIVE - PPC application tasks are currently - active resp. installed in the system. PPCSTATEF_APPRUNNING - At least one PPC application task is ready or running. powerpc.library/PowerDebugMode powerpc.library/PowerDebugMode NAME PowerDebugMode - sets the level of debugging output (V7) CPU 680x0 SYNOPSIS PowerDebugMode (debuglevel) d0 void PowerDebugMode (ULONG); FUNCTION The powerpc.library has a built-in debugging system which prints out many informations to the serial port. The main purpose of this function is to improve the maintenance of this library. If problems occur with the powerpc.library then it will help the author of this library a lot to fix the problems. Try to reproduce the problems with debugging output enabled and send the debugging output to the author. Use a program which captures the data transferred to the serial port (for example Sushi) to save the debugging output. INPUTS debuglevel - Debugging level (0-3). All other values are ignored. The higher the debugging level, the larger the debugging output. 0 means no debugging output. NOTES The powerpc.library operates with debugging level 0 by default (no debugging output). You can change the default value with the environment variable 'powerpc/debug' (set values from 0 to 3). powerpc.library/PutXMsg powerpc.library/PutXMsg NAME PutXMsg - sends an Inter-CPU message to a PPC task (V12) CPU 680x0 SYNOPSIS PutXMsg(MsgPortPPC, message) a0 a1 void PutXMsg(struct MsgPortPPC *, struct Message *); FUNCTION This function sends an Inter-CPU message allocated by 'AllocXMsg' to a PPC task. INPUTS MsgPortPPC - a PPC message port message - a message allocated by 'AllocXMsg'. NOTES Inter-CPU must NOT be used for internal communication. They can only be used for communication between tasks on different processors. Inter-CPU messages get a different node type, if they are sent. If you want to filter out Reply-Messages from standard or Inter-CPU messages, compare the LN_TYPE field to NT_REPLYMSG. Replied Inter-CPU messages still get the same node type (NT_REPLYMSG). Any assumptions about the value of the new node type are ILLEGAL!! As soon as an Inter-CPU message is sent, the 68K looses ownership over the message. No access to the message is allowed until the reply has been arrived. If no replyport was specified, it's allowed to free the message, after it was read from the other side. Inter-CPU messages can be reused if they have been replied. Inter-CPU messages are read and replied using the standard message handling mechanisms (exec/WaitPort,exec/GetMsg,exec/ReplyMsg for 68K, powerpc/WaitPortPPC, powerpc/GetMsgPPC, powerpc/ReplyMsgPPC for PPC). Don't call exec/ReplyMsg with an InterCPU-Message without Replyport (versions less than V12.2 crashed). The receiving task must NOT access message data, which are not explicitely located in the message body (for example data which is referenced by a pointer) unless both tasks care for the cache consistency. Only the message itself is flushed/invalidated automatically by the system. The receiving task may write to the message body of an Inter-CPU message. SEE ALSO AllocXMsg, FreeXMsg powerpc.library/RunPPC powerpc.library/RunPPC NAME RunPPC - runs a PowerPC function (V7) CPU 680x0 SYNOPSIS status = RunPPC(PPStruct) d0 a0 LONG RunPPC (struct PowerPC *); FUNCTION Runs a PowerPC function. A mirror PPC process is created. All registers can be transferred to PPC as well as parameters on stack. All cache management actions are handled automatically. All registers are transferred back from PPC after the PPC call is completed. They are stored in the PowerPC structure. The register assignment is as follows: d0 <-> r3 fp0 <-> f1 d1 <-> r4 fp1 <-> f2 d2 <-> r22 fp2 <-> f3 d3 <-> r23 fp3 <-> f4 d4 <-> r24 fp4 <-> f5 d5 <-> r25 fp5 <-> f6 d6 <-> r26 fp6 <-> f7 d7 <-> r27 fp7 <-> f8 a0 <-> r5 a1 <-> r6 a2 <-> r28 a3 <-> r29 a4 <-> r2 a5 <-> r30 a6 <-> r31 Please note, that these registers are NOT transferred directly but in the register array mentioned above (PP_REGS). Here follows another table from the PPC's point of view: PPC-Register: Index into the register array: --------------------------------------------------------------- Base register: r2 12 Scratch registers: r3 0 r4 1 r5 8 r6 9 Nonvolatile registers: r22 2 r23 3 r24 4 r25 5 r26 6 r27 7 r28 10 r29 11 r30 13 r31 14 INPUTS PPStruct - Pointer to an initialized PowerPC Structure PP_CODE : Pointer to the PowerPC code PP_OFFSET : Not used until V12.2 of powerpc.library. From V12.3 on, the PP_OFFSET field is used just like at Run68K. If PP_OFFSET is zero, than the code pointed to by PP_CODE is executed, if PP_OFFSET is not zero, a PPC library function is executed with PP_CODE containing the library base and PP_OFFSET containing the library vector offset. PP_FLAGS : Flags which can be ore'd together - PP[F/B]_ASYNC : Call PPC function asynchronely (68K process returns immediately) PP_STACKPTR : Pointer to the arguments on the stack to be transferred. The pointer must point directly to the first argument, not to the return address! If no arguments on stack should be transferred, set this to zero. PP_STACKSIZE : Size of the stack area to be transferred. If no stack parameters should be transferred, set this to zero. PP_REGS : Array of longwords where the registers to be transferred can be stored (d0-a6). Please see above for the exact placement of these registers. PP_FREGS : Array of quadwords (8 bytes) where the FP-registers to be transferred can be stored (fp0-fp7). fp0 is at offset 0, fp1 at offset 8 etc. RESULT status - PPERR_SUCCESS if the call was successfully PPERR_ASYNCERR if a synchrone PPC call was made after an asynchrone PPC call NOTES Calling a PPC function asynchronely is dangerous. Take care of possible cache conflicts. Avoid calling system functions as much as possible. If an asynchrone PPC call is done, the function WaitForPPC MUST be called ONCE after the call was done. No other PPC call is allowed for this 68K process after an asynchrone PPC call and before a call to WaitForPPC. If an asynchronely called PPC function performs a 68K call, the call is only performed when WaitForPPC is called by the 68K process. Note that the PPC mirror process is still connected to the calling 68K process. DON'T pass arguments on stack when calling a PPC function asynchronely. The stack is most likely to be trashed before it is copied to the PPC stack. Assembler programmers should use the macros RUNPOWERPC and RUNPOWERPC_XL located in the include file 'powerpc/powerpc.i' SEE ALSO WaitForPPC,powerpc/powerpc.i powerpc.library/SPrintF68K powerpc.library/SPrintF68K NAME SPrintF68K - prints a formatted string to the serial port (V7) CPU 680x0 SYNOPSIS SPrintF68K (Formatstring, values ) a0 a1 void SPrintF68K (STRPTR, APTR); FUNCTION Prints a formatted string to the serial port using the AMIGA-OS functions 'exec/RawPutChar' and 'exec/RawDoFmt'. Can be used to add debugging features and to improve the maintenance of software. INPUTS Formatstring - A C style string with % commands to indicate where parameters have to be inserted (see 'exec/RawDoFmt' for a detailed description of these commands). values - A pointer to an array of parameters to be inserted into specified places in the string. SEE ALSO exec/RawDoFmt powerpc.library/WaitForPPC powerpc.library/WaitForPPC NAME WaitForPPC - waits for the completion of an asynchrone PPC call (V7) CPU 680x0 SYNOPSIS status = WaitForPPC(PPStruct) d0 a0 LONG WaitForPPC (struct PowerPC *); FUNCTION After an asynchrone PPC call was done (see RunPPC) this function must be called to wait for the completion of the PowerPC function. All registers transferred to the PowerPC with RunPPC are returned into the PowerPC Structure. INPUTS PPStruct - Pointer to a PowerPC Structure (see RunPPC for a description of the elements). The structure has not to be initialized. The structure must be transferred to hold the returned registers by the PPC function. RESULT status - PPERR_SUCCESS if the call was successfully PPERR_WAITERR if WaitForPPC is called after a synchrone PPC call. NOTES Assembler programmers should use the macros WAITFORPPC and WAITFORPPC_XL located in the include file 'powerpc/powerpc.i' SEE ALSO RunPPC,powerpc/powerpc.i powerpc.library/AddHeadPPC powerpc.library/AddHeadPPC NAME AddHeadPPC - insert a node at the head of a list (V8) CPU PowerPC SYNOPSIS AddHeadPPC(_PowerPCBase, list, node) r3 r4 r5 void AddHeadPPC(struct Library *, struct List*, struct Node*); FUNCTION Insert a node to the head of a standard exec list. This is the mirror function of exec/AddHead. INPUTS _PowerPCBase - base of powerpc.library (can be omitted) list - a pointer to the target list node - the node to insert NOTES This function is guaranteed to work correctly, if the PowerPCBase is not passed in r3. Assembler programmers may use the macro _ADDHEAD located in 'powerpc/listsPPC.i' This function is safe to call from exception handlers. SEE ALSO InsertPPC, AddTailPPC, RemovePPC, RemHeadPPC, RemTailPPC, EnqueuePPC, FindNamePPC, powerpc/listsPPC.i powerpc.library/AddPortPPC powerpc.library/AddPortPPC NAME AddPortPPC - adds a public PPC message port to the system (V11) CPU PowerPC SYNOPSIS AddPortPPC(_PowerPCBase, MsgPortPPC) r3 r4 void AddPortPPC(struct Library *, struct MsgPortPPC *); FUNCTION This function adds a PPC message port to a public list of ports. The message port should be named and the priority field should be set. A public message port can be found by name using 'FindPortPPC'. This is the mirror function of exec/AddPort. INPUTS _PowerPCBase - base of powerpc.library MsgPortPPC - pointer to a PPC message port. It's safe to pass a NULL parameter. SEE ALSO CreateMsgPortPPC,DeleteMsgPortPPC,FindPortPPC,RemPortPPC powerpc/portsPPC.i powerpc.library/AddSemaphorePPC powerpc.library/AddSemaphorePPC NAME AddSemaphorePPC - initializes a global signal semaphore (V8) CPU PowerPC SYNOPSIS status = AddSemaphorePPC(_PowerPCBase, SignalSemaphorePPC) r3 r3 r4 LONG AddSemaphorePPC(struct Library *, struct SignalSemaphorePPC *); FUNCTION Initializes a signal semaphore and adds it to the public semaphore list. This is the mirror function of exec/AddSemaphore. INPUTS _PowerPCBase - base of powerpc.library SignalSemaphorePPC - pointer to a signalsemaphorePPC structure (a semaphore name should be specified) RESULT status - status value: SSPPC_SUCCESS: function was successful SSPPC_NOMEM: function failed due to lack of memory SEE ALSO InitSemaphorePPC, FreeSemaphorePPC, ObtainSemaphorePPC, AttemptSemaphorePPC, ReleaseSemaphorePPC, RemSemaphorePPC, FindSemaphorePPC, powerpc/semaphoresPPC.i powerpc.library/AddTailPPC powerpc.library/AddTailPPC NAME AddTailPPC - insert a node at the tail of a list (V8) CPU PowerPC SYNOPSIS AddTailPPC(_PowerPCBase, list, node) r3 r4 r5 void AddTailPPC(struct Library *, struct List*, struct Node*); FUNCTION Insert a node to the tail of a standard exec list. This is the mirror function of exec/AddTail. INPUTS _PowerPCBase - base of powerpc.library (can be omitted) list - a pointer to the target list node - the node to insert NOTES This function is guaranteed to work correctly, if the PowerPCBase is not passed in r3. Assembler programmers may use the macro _ADDTAIL located in 'powerpc/listsPPC.i' This function is safe to call from exception handlers. SEE ALSO InsertPPC, AddHeadPPC, RemovePPC, RemHeadPPC, RemTailPPC, EnqueuePPC, FindNamePPC, powerpc/listsPPC.i powerpc.library/AddTimePPC powerpc.library/AddTimePPC NAME AddTimePPC - adds one time request to another (V7) CPU PowerPC SYNOPSIS AddTimePPC(_PowerPCBase, Dest, Source) r3 r4 r5 void AddTimePPC(struct Library *, struct timeval *, struct timeval *); FUNCTION This routine adds one timeval structure to another. The results are stored in the destination (Dest + Source -> Dest) This is the mirror function of timer/AddTime. INPUTS _PowerPCBase - base of powerpc.library Dest - pointer to a timeval structure Source - pointer to a timeval structure NOTES This function is safe to call from exception handlers SEE ALSO GetSysTimePPC, SubTimePPC, CmpTimePPC powerpc.library/AllocSignalPPC powerpc.library/AllocSignalPPC NAME AllocSignalPPC - allocate a signal (V8) CPU PowerPC SYNOPSIS signalnum = AllocSignalPPC(_PowerPCBase, signalNum) r3 r3 r4 LONG AllocSignalPPC(struct Library *, LONG); FUNCTION Allocate a signal bit from the current task's pool. Either a particular bit or the next free bit may be allocated. This is the mirror function of exec/AllocSignal. INPUTS _PowerPCBase - base of powerpc.library signalNum - the desired signal bit number (0..31) or -1 if the next free bit should be allocated RESULT signalnum - the signal bit allocated or -1 for failure. NOTES IMPORTANT: The signal bit numbers are returned in the 68K notation! For example, if the number 27 is returned, the waiting mask must be $08000000. All signal allocations are kept coherent on both CPU's. A signal allocated on the 68K side is not free anymore for the mirror PPC task and vice versa. The PPC also can wait for signals or send signals allocated on the 68K side and vice versa (V11). SEE ALSO FreeSignalPPC, SetSignalPPC, SignalPPC, WaitPPC powerpc.library/AllocVecPPC powerpc.library/AllocVecPPC NAME AllocVecPPC - allocates memory for PPC with MMU support (V7) CPU PowerPC SYNOPSIS memblock = AllocVecPPC(_PowerPCBase, memsize, attributes, alignment) r3 r3 r4 r5 r6 void *AllocVecPPC(struct Library *, ULONG, ULONG, ULONG); FUNCTION This function allocates memory which is correctly aligned for the use by PowerPC applications. It's the mirror function of exec/AllocVec but offers some additional features. AllocVecPPC supports user defined alignment and allocation of memory- blocks with a desired cache mode (MMU support only for V9+) Since V12, it's possible to allocate memory, which is protected against other tasks (either full- or write-protected). INPUTS _PowerPCBase - base of powerpc.library memsize - the amount of memory to be allocated. attributes - the requirements as explained in exec/AllocMem This function offers some additional attributes: MEMF_WRITETHROUGH: maps the allocated memory as writethrough MEMF_COPYBACK: maps the allocated memory as copyback MEMF_CACHEON: maps the allocated memory as cachable MEMF_CACHEOFF: maps the allocated memory as noncachable MEMF_GUARDED: maps the allocated memory as guarded MEMF_NOTGUARDED: maps the allocated memory as not guarded MEMF_BAT: puts the allocated memory block into a BAT register MEMF_PROTECT: the memory block should be full-protected against other tasks (no user-accesses of other tasks allowed). MEMF_WRITEPROTECT: the memory block should be write-protected against other tasks (no user-write-acesses of other tasks allowed). alignment - the desired alignment of the memory block. The system may round this value up to a minimal alignment. It's safe to pass 0 as alignment. RESULT memblock - The address of the allocated memory. If the memory couldn't be allocated 0 is returned. NOTES The amount of memory effectively allocated is usually bigger than the given memsize. It's not a good idea to call this function many times to allocate very small pieces of memory. If some of the additional memflags are specified, the alignment and the size is internally rounded up to meet the requirements of the MMU. The additional MMU memflags are intended for highly optimizing code and shoud not be used by standard applications. The memflag MEMF_BAT can improve the performance of the memory accesses heavily (especially on CPU's with software tablesearch). But DON'T use this flag unless you really need the speed. Note: The required free memory has to be much bigger than the size of the memory to be allocated, because there are severe alignment restrictions when using BAT registers. The memflag MEMF_BAT has no effect if the task runs with BAT MMU Setup. Note that no other tasks should access memory which was allocated using special MMU memflags, because the other task can probably run under a different MMU setup which can cause cache problems, if the other one writes to the same memory in copyback mode while this task accesses the data in noncachable mode, for example. The MMU support ist not implemented in powerpc.library <= V9. The memory protection support ist not implemented in powerpc.library <= V11. BUGS Before V14, allocations > 512KB could fail. SEE ALSO FreeVecPPC, FreeAllMem, powerpc/memoryPPC.i powerpc.library/AllocXMsgPPC powerpc.library/AllocXMsgPPC NAME AllocXMsgPPC - allocates a message for Inter-CPU communication (V12) CPU PowerPC SYNOPSIS message = AllocXMsgPPC(_PowerPCBase, bodysize, replyport) r3 r3 r4 r5 struct Message *AllocXMsgPPC(struct Library *, ULONG, struct MsgPort *); FUNCTION This function allocates memory for a message which can be used for Inter-CPU communication. Some fields of the message are initialized. After this function was called, the message body must be created before sending this message. INPUTS _PowerPCBase - base of powerpc.library bodysize - the size of the message body (max. 65535-MN_SIZE) replyport - the reply port RESULT message - The address of an initialized message (except for the message body, which must be initialized by the programmer). NOTES Calling this function is the only way allowed to create a message which can be sent to a 68K task. A message allocated with 'AllocXMsgPPC' should be freed using 'FreeXMsgPPC' if it is not used anymore. Since V14, it is allowed to free the messsage using 'FreeXMsg' on the 68K side (which is internally done using a cross call). An Inter-CPU message must be sent with 'PutXMsgPPC' to a 68K task. It is possible not to specify a replyport (simply set replyport to NULL). If you want to be compatible to earlier versions, you shouldn't free InterCPU messages by the foreign task. SEE ALSO FreeXMsgPPC, PutXMsgPPC powerpc.library/AttemptSemaphorePPC powerpc.library/AttemptSemaphorePPC NAME AttemptSemaphorePPC - try to obtain without blocking (V8) CPU PowerPC SYNOPSIS status = AttemptSemaphorePPC(_PowerPCBase, SignalSemaphorePPC) r3 r4 LONG AttemptSemaphorePPC(struct Library *, struct SignalSemaphorePPC *); FUNCTION Tries to get exclusive access to a signal semaphore. If the semaphore is locked by another task, this function returns with an appropriate status value. This is the mirror function of exec/AttemptSemaphore INPUTS _PowerPCBase - base of powerpc.library SignalSemaphorePPC - pointer to a signalsemaphorePPC structure RESULT status - status value: ATTEMPT_SUCCESS: operation successful ATTEMPT_FAILURE: semaphore couldn't be locked NOTES This call is guaranteed to preserve all GPR (except r0 and r3) and the CTR. SEE ALSO InitSemaphorePPC, FreeSemaphorePPC, ObtainSemaphorePPC, ReleaseSemaphorePPC, AddSemaphorePPC, RemSemaphorePPC FindSemaphorePPC, powerpc/semaphoresPPC.i powerpc.library/ChangeMMU powerpc.library/ChangeMMU NAME ChangeMMU - changes the MMU setup of the current task (V10) CPU PowerPC SYNOPSIS ChangeMMU(_PowerPCBase, MMUMode) r3 r4 void ChangeMMU(struct Library *, ULONG); FUNCTION Changes the MMU setup of the currently running task. A task is able to run with two different MMU setups: - paged MMU setup: The standard method, where almost every memory access is controlled by the page table - BAT MMU setup: Almost all the memory is controlled by the 4 BAT registers. INPUTS _PowerPCBase - base of powerpc.library MMUMode - CHMMU_STANDARD: change MMU setup to standard CHMMU_BAT : change MMU setup to BAT setup NOTES This function should usually NOT be called. It is intended for highly optimizing code and should only be used, if enough MMU knowledge is present. The state of the current task can be changed from the shell by using the tool 'changemmu' (and this is the better way how to change the setup rather than calling the library function) SEE ALSO powerpc/tasksppc.i powerpc.library/ClearExcMMU powerpc.library/ClearExcMMU NAME ClearExcMMU - removes the temp. MMU setup installed by SetExcMMU (V10) CPU PowerPC SYNOPSIS ClearExcMMU(_PowerPCBase) r3 void ClearExcMMU(struct Library *); FUNCTION This function is for exception handlers only. It removes the temporary BAT based MMU setup, which was installed using SetExcMMU. The old MMU state is restored. INPUTS _PowerPCBase - base of powerpc.library NOTES This function must not be called from anywhere else than from an exception handler. SEE ALSO SetExcMMU powerpc.library/CmpTimePPC powerpc.library/CmpTimePPC NAME CmpTimePPC - compares two timeval structures (V7) CPU PowerPC SYNOPSIS result = CmpTimePPC(_PowerPCBase, Dest, Source) r3 r3 r4 r5 LONG CmpTimePPC(struct Library *, struct timeval *, struct timeval *); FUNCTION This routine compares two timeval structures. This is the mirror function of timer/CmpTime. INPUTS _PowerPCBase - base of powerpc.library Dest - pointer to a timeval structure Source - pointer to a timeval structure RESULT 0 - if both timeval structures are equal -1 - if Dest is greater than Source 1 - if Dest is less than Source NOTES This function is safe to call from exception handlers SEE ALSO GetSysTimePPC, AddTimePPC, SubTimePPC powerpc.library/CopyMemPPC powerpc.library/CopyMemPPC NAME CopyMemPPC - copies memory the fastest way possible (V12) CPU PowerPC SYNOPSIS CopyMemPPC(_PowerPCBase, source, dest, size) r3 r4 r5 r6 void CopyMemPPC(struct Library *, void *, void *, ULONG); FUNCTION This function copies a source memory area to a destination memory area. No overlapping is supported. CopyMemPPC tries to copy with the highest bandwidth possible. INPUTS _PowerPCBase - base of powerpc.library source - address of the source memory area dest - address of the destination memory area size - size of the memory area to be copied NOTES The highest performance can be achieved if both memory areas have a minimal alignment of 8. powerpc.library/CreateMsgPortPPC powerpc.library/CreateMsgPortPPC NAME CreateMsgPortPPC - creates a new PPC message port (V11) CPU PowerPC SYNOPSIS MsgPortPPC = CreateMsgPortPPC(_PowerPCBase) r3 r3 struct MsgPortPPC *CreateMsgPortPPC(struct Library *); FUNCTION This function creates a new PowerPC message port. This is the only way allowed to create a PPC message port. It is the mirror function of exec/CreateMsgPort. INPUTS _PowerPCBase - base of powerpc.library RESULT MsgPortPPC - pointer to a MsgPortPPC structure or NULL for failure NOTES A PowerPC message port should be deleted using 'DeleteMsgPortPPC' if it is not used anymore. It's forbidden to access PPC message ports by the standard exec message handling routines. SEE ALSO DeleteMsgPortPPC,FindPortPPC,AddPortPPC,RemPortPPC powerpc/portsPPC.i powerpc.library/CreateTaskPPC powerpc.library/CreateTaskPPC NAME CreateTaskPPC - creates a new PPC task (V8) CPU PowerPC SYNOPSIS TaskPPC = CreateTaskPPC(_PowerPCBase, TagItems) r3 r3 r4 struct TaskPPC *CreateTaskPPC(struct Library *, struct TagItem *); FUNCTION This function creates a new PPC task under control of the tags passed. All memory (inclusive stack) is allocated automatically. PPC tasks are similar to exec tasks (the first element of the TaskPPC structure is an exec task structure). The scheduling of these tasks works similar to exec, so a running task blocks all tasks with lower priority. INPUTS _PowerPCBase - base of powerpc.library TagItems - pointer to a tagitem array. The following tags are supported: TASKATTR_CODE: pointer to the entry point of the new task (MUST be specified) TASKATTR_EXITCODE: pointer to the exit routine of the new task TASKATTR_NAME: task name (MUST be specified) TASKATTR_PRI: task priority (-128 ... 127). Default = 0. TASKATTR_STACKSIZE: the desired stack size. If this tag is omitted the default stack size will be 16K. TASKATTR_R2: smalldata base of the PPC program TASKATTR_R3: ... TASKATTR_R10: parameters to be passed to the new task in the specified registers TASKATTR_MOTHERPRI: the priority is taken from the currently running task (TASKATTR_PRI is ignored) (V9) TASKATTR_BAT: lets the task run under BAT MMU setup by default (V10) RESULT TaskPPC - pointer to a TaskPPC structure or NULL for failure NOTES If a 68K application only wants to call a PPC function, it's better to use Run68K instead of creating a new PPC task. While a PPC task created by Run68K is always connected to the calling 68K process, a task created by CreateTaskPPC is completely independent. If such a task peforms 68K calls, a new mirror process on the 68K side is created. If an alternative exit code is specified (TASKATTR_EXITCODE) the value passed in TASKATTR_R2 remains intact in this exit code. SEE ALSO DeleteTaskPPC,FindTaskPPC,powerpc/tasksPPC.i powerpc.library/DeleteMsgPortPPC powerpc.library/DeleteMsgPortPPC NAME DeleteMsgPortPPC - deletes a PPC message port (V11) CPU PowerPC SYNOPSIS DeleteMsgPortPPC(_PowerPCBase, MsgPortPPC) r3 r4 void DeleteMsgPortPPC(struct Library *, struct MsgPortPPC *); FUNCTION This function deletes a PowerPC message port created using 'CreateMsgPortPPC'. It is the mirror function of exec/DeleteMsgPort. INPUTS _PowerPCBase - base of powerpc.library MsgPortPPC - Pointer to the message port to delete. It's safe to pass NULL as parameter NOTES Calling 'DeleteMsgPortPPC' is the ONLY way allowed to delete a PPC message port. SEE ALSO CreateMsgPortPPC,FindPortPPC,AddPortPPC,RemPortPPC powerpc/portsPPC.i powerpc.library/DeleteTaskPPC powerpc.library/DeleteTaskPPC NAME DeleteTaskPPC - deletes a PPC task (V8) CPU PowerPC SYNOPSIS DeleteTaskPPC(_PowerPCBase, PPCTask) r3 r4 void DeleteTaskPPC(struct Library *, struct TaskPPC *); FUNCTION Deletes a PPC task created by CreateTaskPPC. INPUTS _PowerPCBase - base of powerpc.library TaskPPC - PPC task to remove or NULL for self removal NOTES It's not encouraged to delete other tasks. This function should only be called with a NULL parameter to remove the calling task itself. The system may also remove an existing 68K mirror process connected to the calling PPC task. SEE ALSO CreateTaskPPC,FindTaskPPC,powerpc/tasksPPC.i powerpc.library/EndSnoopTask powerpc.library/EndSnoopTask NAME EndSnoopTask - stops monitoring a PPC task (V13) CPU PowerPC SYNOPSIS EndSnoopTask (_PowerPCBase, SnoopID) r3 r4 void EndSnoopTask (struct Library *, ULONG); FUNCTION This function removes a callback job, which was installed using powerpc/SnoopTask. INPUTS _PowerPCBase - base of powerpc.library SnoopID - The value returned by SnoopTask. It's safe to pass NULL as parameter (is handled as no-op) SEE ALSO SnoopTask powerpc.library/EnqueuePPC powerpc.library/EnqueuePPC NAME EnqueuePPC - inserts a node into a list sorted by priority (V8) CPU PowerPC SYNOPSIS EnqueuePPC(_PowerPCBase, list, node) r3 r4 r5 void EnqueuePPC(struct Library *, struct List*, struct Node*); FUNCTION Inserts a node to a standard exec list based on the node priority. In this way a list can be kept sorted by priority all the time. New nodes will be inserted in front of the first node with a lower priority. This is the mirror function of exec/Enqueue. INPUTS _PowerPCBase - base of powerpc.library (can be omitted) list - a pointer to the target list node - the node to enqueue NOTES This function is guaranteed to work correctly, if the PowerPCBase is not passed in r3. This function is safe to call from exception handlers. SEE ALSO InsertPPC, AddTailPPC, AddHeadPPC, RemovePPC, RemHeadPPC, RemTailPPC, FindNamePPC, powerpc/listsPPC.i powerpc.library/FindNamePPC powerpc.library/FindNamePPC NAME FindNamePPC - finds a node with given name (V8) CPU PowerPC SYNOPSIS node = FindNamePPC(_PowerPCBase, start, name) r3 r3 r4 r5 struct Node *FindNamePPC(struct Library *, struct List*, STRPTR); FUNCTION Searches a list for a node with the given name. If multiple nodes with same names should be found, this function can be called with a node starting point. INPUTS _PowerPCBase - base of powerpc.library list - a list header or a node to start the searche (if node, this one is skipped) name - the name of the node NOTES This function is guaranteed to work correctly, if the PowerPCBase is not passed in r3. This function is safe to call from exception handlers. SEE ALSO InsertPPC, AddTailPPC, AddHeadPPC, RemovePPC, RemHeadPPC, RemTailPPC, EnqueuePPC, powerpc/listsPPC.i powerpc.library/FindPortPPC powerpc.library/FindPortPPC NAME FindPortPPC - finds a public PPC message port by name (V11) CPU PowerPC SYNOPSIS MsgPortPPC = FindPortPPC(_PowerPCBase, name) r3 r3 r4 struct MsgPortPPC* FindPortPPC(struct Library *, STRPTR); FUNCTION This function will search the global list of PPC message ports for a port with the given name. No arbritation is needed. This is the mirror function of exec/FindPort. INPUTS _PowerPCBase - base of powerpc.library name - name of the PPC message port to search RESULT MsgPortPPC - pointer to a PPC message port or NULL if it was not found. SEE ALSO CreateMsgPortPPC,DeleteMsgPortPPC,AddPortPPC,RemPortPPC powerpc/portsPPC.i powerpc.library/FindSemaphorePPC powerpc.library/FindSemaphorePPC NAME FindSemaphorePPC - finds a public semaphore (V8) CPU PowerPC SYNOPSIS SignalsemaphorePPC = FindSemaphorePPC(_PowerPCBase, SemaphoreName) r3 r3 r4 struct signalsemaphorePPC *FindSemaphorePPC(struct Library *, STRPTR); FUNCTION Finds a public semaphore added to the system semaphore list by AddSemaphore. This is the mirror function to exec/FindSemaphore. INPUTS _PowerPCBase - base of powerpc.library SemaphoreName - name of the semaphore to find RESULT SignalsemaphorePPC - signal semaphore requested or 0 if it was not found SEE ALSO InitSemaphorePPC, FreeSemaphorePPC, ObtainSemaphorePPC, AttemptSemaphorePPC, ReleaseSemaphorePPC, AddSemaphorePPC, RemSemaphorePPC, powerpc/semaphoresPPC.i powerpc.library/FindTagItemPPC powerpc.library/FindTagItemPPC NAME FindTagItemPPC - scan a tag list for a specific tag (V8) CPU PowerPC SYNOPSIS tag = FindTagItemPPC(_PowerPCBase, tagValue, tagList) r3 r3 r4 r5 struct TagItem *FindTagItemPPC(struct Library *, ULONG, struct TagItem *); FUNCTION Scans a tag list and returns a pointer to the first item with ti_Tag matching the 'tagValue' parameter. This is the mirror function of utility/FindTagItem. INPUTS _PowerPCBase - base of powerpc.library tagValue - tag value to search for tagList - tag item list to search (may be NULL) RESULT tag - a pointer to the item with ti_Tag matching 'tagValue' or NULL if no match was found. NOTES This function is safe to call from exception handlers. SEE ALSO GetTagDataPPC, NextTagItemPPC, utility/tagitem.i powerpc.library/FindTaskByID powerpc.library/FindTaskByID NAME FindTaskByID - evaluates the task address for a given task ID (V14) CPU PowerPC SYNOPSIS TaskPPC = FindTaskByID(_PowerPCBase, taskID) r3 r3 r4 struct TaskPPC *FindTaskByID(struct Library *, ULONG); FUNCTION Evaluates the task address for a given task ID. INPUTS _PowerPCBase - base of powerpc.library taskID - the task's ID number RESULT TaskPPC - Pointer to the PPCTask structure SEE ALSO CreateTaskPPC,DeleteTaskPPC,powerpc/tasksPPC.i powerpc.library/FindTaskPPC powerpc.library/FindTaskPPC NAME FindTaskPPC - finds a task by name (or find oneself) (V8) CPU PowerPC SYNOPSIS TaskPPC = FindTaskPPC(_PowerPCBase, Name) r3 r3 r4 struct TaskPPC *FindTaskPPC(struct Library *, STRPTR); FUNCTION Tries to find a task with the given name (or the current task if NULL is specified). This is the mirror function of exec/FindTask. INPUTS _PowerPCBase - base of powerpc.library Name - name of the task to find or NULL for the current task RESULT TaskPPC - pointer to the TaskPPC structure or NULL if the task was not found NOTES Be cautious that a task may be removed at any time, so the pointer returned may not be valid anymore when used. It's allowed to call FindTaskPPC with a NULL parameter from an exception handler. In this case the interrupted task is returned. SEE ALSO CreateTaskPPC, DeleteTaskPPC, FindTaskByID, powerpc/tasksPPC.i powerpc.library/FreeAllMem powerpc.library/FreeAllMem NAME FreeAllMem - frees all memory allocated by the calling task (V11) CPU PowerPC SYNOPSIS FreeAllMem(_PowerPCBase) r3 void FreeVecPPC(struct Library *); FUNCTION Frees all memory which was allocated by the calling task. This is an easy way to free the memory rather than calling FreeVecPPC for every allocation made. INPUTS _PowerPCBase - base of powerpc.library SEE ALSO AllocVecPPC,FreeVecPPC,powerpc/memoryPPC.i powerpc.library/FreeSemaphorePPC powerpc.library/FreeSemaphorePPC NAME FreeSemaphorePPC - frees a signal semaphore (V8) CPU PowerPC SYNOPSIS FreeSemaphorePPC(_PowerPCBase, SignalSemaphorePPC) r3 r4 void FreeSemaphorePPC(struct Library *, struct SignalSemaphorePPC *); FUNCTION Frees a signal semaphore initialized by InitSemaphorePPC. There is no similar function in exec.library! INPUTS _PowerPCBase - base of powerpc.library SignalSemaphorePPC - pointer to a signalsemaphorePPC structure SEE ALSO InitSemaphorePPC, ObtainSemaphorePPC, AttemptSemaphorePPC, ReleaseSemaphorePPC, AddSemaphorePPC, RemSemaphorePPC, FindSemaphorePPC, powerpc/semaphoresPPC.i powerpc.library/FreeSignalPPC powerpc.library/FreeSignalPPC NAME FreeSignalPPC - frees a signal (V8) CPU PowerPC SYNOPSIS FreeSignalPPC(_PowerPCBase, signalNum) r3 r4 void FreeSignalPPC(struct Library *, LONG); FUNCTION Frees a signal bit allocated by AllocSignalPPC. This is the mirror function of exec/FreeSignal. INPUTS _PowerPCBase - base of powerpc.library signalNum - the signal bit number to free (0..31). It's safe to pass -1 as input parameter. SEE ALSO AllocSignalPPC, SetSignalPPC, SignalPPC, WaitPPC powerpc.library/FreeVecPPC powerpc.library/FreeVecPPC NAME FreeVecPPC - frees memory allocated by AllocVecPPC (V7) CPU PowerPC SYNOPSIS status = FreeVecPPC(_PowerPCBase, memblock) r3 r3 r4 LONG FreeVecPPC(struct Library *, void *); FUNCTION Frees memory allocated by AllocVecPPC. This is the mirror function of exec/FreeVec. INPUTS _PowerPCBase - base of powerpc.library memblock - address of memory to be freed. It's safe to pass NULL as input parameter. RESULT status - a status value: MEMERR_SUCCESS - operation was successful NOTES It is absolutely required that no part of the freed memory is located in the 68K data cache! This is only important if your application is working asynchronously and shares data between independent 68K and PPC tasks. Otherwise (for standard synchron applications) it is guaranteed that the 68K data cache doesn't contain parts of the freed memory. The same rules also apply to the reverse case (free memory using exec/FreeVec). SEE ALSO AllocVecPPC, FreeAllMem, powerpc/memoryPPC.i powerpc.library/FreeXMsgPPC powerpc.library/FreeXMsgPPC NAME FreeXMsgPPC - frees a message allocated with 'AllocXMsgPPC' (V12) CPU PowerPC SYNOPSIS FreeXMsgPPC(_PowerPCBase, message) r3 r4 void FreeXMsgPPC(struct Library *, struct Message *); FUNCTION This function frees a memory allocated using 'AllocXMsgPPC'. INPUTS _PowerPCBase - base of powerpc.library message - a message allocated by 'AllocXMsgPPC'. NOTES There were some restrictions in earlier versions using FreeXMsgPPC. Since V14, a XMessage created by AllocXMsgPPC can be freed either by another PPC task (if the message isn't used anymore) or by a 68K task using FreeXMsg. SEE ALSO AllocXMsgPPC, PutXMsgPPC powerpc.library/GetHALInfo powerpc.library/GetHALInfo NAME GetHALInfo - evaluates some HAL related information (V14) CPU PowerPC SYNOPSIS GetHALInfo(_PowerPCBase, HALInfoTagList) r3 r4 void GetHALInfo(struct Library *, struct TagItem *); FUNCTION This function is able to evaluate some information related to the WarpUp-HAL' status. The values which should be evaluated are specified using the appropriate tags (defined in powerpc/powerpc.i) and the value is returned in the appropriate ti_Data field. INPUTS _PowerPCBase - base of powerpc.library HALInfoTagList - pointer to a tagitem array. The following tags are supported: HINFO_ALEXC_HIGH: returns the high-longword of a 64-bit-value showing the number of emulated alignment exceptions since the PowerPC was reset. HINFO_ALEXC_LOW: returns the low-longword of a 64-bit-value showing the number of emulated alignment exceptions since the PowerPC was reset. NOTES If the number of emulated alignment exceptions should be evaluated for specific tasks, you should use the tc_Switch/tc_Launch fields of the WarpOS task structure to keep track of task switches. This function is safe to call from exception handlers. SEE ALSO powerpc/powerpc.i powerpc.library/GetInfo powerpc.library/GetInfo NAME GetInfo - evaluates many CPU related information (V10) CPU PowerPC SYNOPSIS GetInfo(_PowerPCBase, PPCInfoTagList) r3 r4 void GetInfo(struct Library *, struct TagItem *); FUNCTION This function is able to evaluate many CPU related information such as CPU type, cache states and more. The values which should be evaluated are specified using the appropriate tags (defined in powerpc/powerpc.i) and the value is returned in the appropriate ti_Data field. INPUTS _PowerPCBase - base of powerpc.library PPCInfoTagList - pointer to a tagitem array. The following tags are supported: PPCINFO_CPU: evaluates the PowerPC CPU type (see powerpc/ powerpc.i for a description of the possible return values) PPCINFO_PVR: returns the PVR register which also contains the revision number of the CPU besides the CPU type. PPCINFO_ICACHE: returns the state of the instruction cache See powerpc/powerpc.i for a description of the possible values. PPCINFO_DCACHE: returns the state of the data cache. The values possible are the same as for PPCINFO_ ICACHE. PPCINFO_PAGETABLE: returns the location of the standard page table PPCINFO_TABLESIZE: returns the size of the page table (in KBytes) PPCINFO_BUSCLOCK: returns the bus clock value (in Hz) PPCINFO_CPUCLOCK: returns the CPU clock value (in Hz) NOTES The CPU clock cannot be evaluated on PowerPC systems without the extension E (for example PPC603,PPC604) because the supervisor register HID1 is missing. In this case, 0 is returned. Usually the PPC-CPU's available for AMIGA will have this register (for example: PPC603E, PPC604E) SEE ALSO powerpc/powerpc.i powerpc.library/GetMsgPPC powerpc.library/GetMsgPPC NAME GetMsgPPC - get next message from a message port (V11) CPU PowerPC SYNOPSIS message = GetMsgPPC(_PowerPCBase, MsgPortPPC) r3 r3 r4 struct Message *GetMsgPPC(struct Library *, struct MsgPortPPC *); FUNCTION This function receives a message from a given message port. This is the mirror function of exec/GetMsg. INPUTS _PowerPCBase - base of powerpc.library port - a pointer to a message port RESULTS message - a pointer to the first available message or NULL if none is available. SEE ALSO WaitPortPPC, PutMsgPPC, ReplyMsgPPC, powerpc/portsPPC.i powerpc.library/GetSysTimePPC powerpc.library/GetSysTimePPC NAME GetSysTimePPC - get the current (relative) time (V7) CPU PowerPC SYNOPSIS GetSysTimePPC(_PowerPCBase, Dest ) r3 r4 void GetSysTimePPC(struct Library *, struct timeval * ); FUNCTION Returns the current system time. This time is NOT absolute, there is no relation between the real time and the time returned by GetSysTimePPC. This function can be used for measurement of time spans. This is the mirror function of timer/GetSysTime. INPUTS _PowerPCBase - base of powerpc.library Dest - pointer to a timeval structure (where the time is stored) NOTES This function has different behaviour on powerpc.library V7 and powerpc.library V8+. V7: The time is evaluated using the timer.device (via a cross call) because it isn't possible to evaluate the busclock frequency of the PPC with V7 (and ppc.library below) until now. V8+: The time is evaluated completely native (and fast) using the internal timers and the busclock frequency evaluated by WarpOS. This function is safe to call from exception handlers ONLY in powerpc.library V8 and higher !! SEE ALSO AddTimePPC, SubTimePPC, CmpTimePPC powerpc.library/GetTagDataPPC powerpc.library/GetTagDataPPC NAME GetTagDataPPC - obtain the data corresponding to a tag (V8) CPU PowerPC SYNOPSIS value = GetTagDataPPC(_PowerPCBase, tagValue, defaultVal, tagList) r3 r3 r4 r5 r6 ULONG *GetTagDataPPC(struct Library *, ULONG, ULONG, struct TagItem* ); FUNCTION Searches a tag list for a matching tag and returns the corresponding ti_Data value for the TagItem found. If no match is found, this function returns the value passed in as 'defaultVal'. This is the mirror function of utility/GetTagData. INPUTS _PowerPCBase - base of powerpc.library tagValue - tag value to search for defaultVal - value to be returned if tagValue is not found tagList - tag item list to search (may be NULL) RESULT value - the ti_Data value for the first matching TagItem, or 'defaultVal' if a ti_Tag matching Tag is not found. NOTES This function is safe to call from exception handlers. SEE ALSO FindTagItemPPC, NextTagItemPPC, utility/tagitem.i powerpc.library/GetTaskByID powerpc.library/GetTaskByID NAME GetTaskByID - evaluates the task address for a given task ID (V14) CPU PowerPC SYNOPSIS TaskPPC = GetTaskByID(_PowerPCBase, taskID) r3 r3 r4 ULONG *GetTagDataPPC(struct Library *, ULONG, ULONG, struct TagItem* ); FUNCTION Searches a tag list for a matching tag and returns the corresponding ti_Data value for the TagItem found. If no match is found, this function returns the value passed in as 'defaultVal'. This is the mirror function of utility/GetTagData. INPUTS _PowerPCBase - base of powerpc.library tagValue - tag value to search for defaultVal - value to be returned if tagValue is not found tagList - tag item list to search (may be NULL) RESULT value - the ti_Data value for the first matching TagItem, or 'defaultVal' if a ti_Tag matching Tag is not found. NOTES This function is safe to call from exception handlers. SEE ALSO FindTagItemPPC, NextTagItemPPC, utility/tagitem.i powerpc.library/InitSemaphorePPC powerpc.library/InitSemaphorePPC NAME InitSemaphorePPC - initializes a signal semaphore (V8) CPU PowerPC SYNOPSIS status = InitSemaphorePPC(_PowerPCBase, SignalSemaphorePPC) r3 r3 r4 LONG InitSemaphorePPC(struct Library *, struct SignalSemaphorePPC *); FUNCTION Initializes a signal semaphore. This is the mirror function of exec/InitSemaphore with some changes. INPUTS _PowerPCBase - base of powerpc.library SignalSemaphorePPC - pointer to a signalsemaphorePPC structure (all fields to zero) RESULT status - status value: SSPPC_SUCCESS: function was successful SSPPC_NOMEM: function failed due to lack of memory NOTES In opposite to exec/InitSemaphore a signal semaphore for PPC has to be freed with FreeSemaphorePPC, because InitSemaphorePPC allocates memory which should be freed after use. SEE ALSO FreeSemaphorePPC, ObtainSemaphorePPC, AttemptSemaphorePPC, ReleaseSemaphorePPC, AddSemaphorePPC, RemSemaphorePPC, FindSemaphorePPC, powerpc/semaphoresPPC.i powerpc.library/InsertPPC powerpc.library/InsertPPC NAME InsertPPC - insert a node into a list (V8) CPU PowerPC SYNOPSIS Insert(_PowerPCBase, list, node, nodepredecessor) r3 r4 r5 r6 void InsertPPC(struct Library *, struct List*, struct Node*, struct Node*); FUNCTION Insert a node into an standard exec list. This is the mirror function of exec/Insert. INPUTS _PowerPCBase - base of powerpc.library (can be omitted) list - a pointer to the target list node - the node to insert nodepredecessor - the node after which to insert. If 0 is passed, the node is inserted at the head of the list. NOTES This function is guaranteed to work correctly, if the PowerPCBase is not passed in r3. This function is safe to call from exception handlers. SEE ALSO AddHeadPPC, AddTailPPC, RemovePPC, RemHeadPPC, RemTailPPC, EnqueuePPC, FindNamePPC, powerpc/listsPPC.i powerpc.library/LockTaskList powerpc.library/LockTaskList NAME LockTaskList - locks a list of all tasks (V10) CPU PowerPC SYNOPSIS TaskPtr = LockTaskList(_PowerPCBase) r3 r3 struct TaskPtr* LockTaskList(struct Library *); FUNCTION This function locks a list of all PPC tasks currently available. The main purpose of this function is to allow examining the PPCtask structures without to worry about protecting the access by semaphores (this is done internally). The usual method of accessing the task information is the following: - Lock the task list using 'LockTaskList' - Get the pointer to the first task (by reading out the entry TASKPTR_TASK of the returned TaskPtr structure) - Scan trough the list and read out all infomation you need until you find the end of the list - Unlock the list using 'UnLockTaskList' INPUTS _PowerPCBase - base of powerpc.library RESULTS TaskPtr - Ptr to the first node of a list of TaskPtr structures (see powerpc/tasksppc.i) NOTES The WarpOS multitasking is NOT halted between LockTaskList and UnLockTaskList. No new tasks are created and no resources of removed tasks are freed between LockTaskList and UnLockTaskList. So don't lock the list for a too long time. SEE ALSO UnLockTaskList, powerpc/tasksppc.i powerpc.library/ModifyFPExc powerpc.library/ModifyFPExc NAME ModifyFPExc - enables/disables specific floating point exceptions (V9) CPU PowerPC SYNOPSIS ModifyFPExc(_PowerPCBase, FPflags) r3 r4 void ModifyFPExc(struct Library *, ULONG); FUNCTION This function allows to enable/disable particular floating point exceptions. Multiple exceptions can be affected simultaneously. INPUTS _PowerPCBase - base of powerpc.library FPflags - action to be performed: FPF_EN_OVERFLOW: Enables FP overflow exception FPF_EN_UNDERFLOW: Enables FP underflow exception FPF_EN_ZERODIVIDE: Enables FP zero divide exception FPF_EN_INEXACT: Enables FP inexact operation exception FPF_EN_INVALID: Enables FP invalid operation exception FPF_DIS_OVERFLOW: Disables FP overflow exception FPF_DIS_UNDERFLOW: Disables FP underflow exception FPF_DIS_ZERODIVIDE: Disables FP zero divide exception FPF_DIS_INEXACT: Disables FP inexact operation exception FPF_DIS_INVALID: Disables FP invalid operation exception NOTES Floating point exceptions must be enabled globally using 'SetHardware' otherwise this function doesn't have any effect. SEE ALSO SetHardware, powerpc/powerpc.i powerpc.library/NextTagItemPPC powerpc.library/NextTagItemPPC NAME NextTagItemPPC - iterate through a tag list (V8) CPU PowerPC SYNOPSIS tag = NextTagItemPPC(_PowerPCBase, tagItemPtr) r3 r3 r4 struct TagItem *NextTagItemPPC(struct Library *, struct TagItem **); FUNCTION Iterates through a tag list, skipping and chaining as dictated by system tags. Each call returns either the next item to be examined or NULL when the end of the list has benn reached. This is the mirror function of utility/NextTagItem. INPUTS _PowerPCBase - base of powerpc.library tagItemPtr - double-indirect reference to a TagItem structure. The pointer will be changed to keep track of the iteration. RESULT tag - each TagItem in the array that should be processed is returned in turn with succesive calls. NOTES This function is safe to call from exception handlers. SEE ALSO FindTagItemPPC, GetTagDataPPC, utility/tagitem.i powerpc.library/ObtainSemaphorePPC powerpc.library/ObtainSemaphorePPC NAME ObtainSemaphorePPC - gain exclusive access to a semaphore (V8) CPU PowerPC SYNOPSIS ObtainSemaphorePPC(_PowerPCBase, SignalSemaphorePPC) r3 r4 void ObtainSemaphorePPC(struct Library *, struct SignalSemaphorePPC *); FUNCTION Tries to get exclusive access to a signal semaphore. If the semaphore is occupied, the task adds itself into a waiting queue. This is the mirror function of exec/ObtainSemaphore. INPUTS _PowerPCBase - base of powerpc.library SignalSemaphorePPC - pointer to a signalsemaphorePPC structure NOTES This call is guaranteed to preserve all GPR (except r0) and the CTR. SEE ALSO InitSemaphorePPC, FreeSemaphorePPC, AttemptSemaphorePPC, ReleaseSemaphorePPC, AddSemaphorePPC, RemSemaphorePPC FindSemaphorePPC, powerpc/semaphoresPPC.i powerpc.library/PutMsgPPC powerpc.library/PutMsgPPC NAME PutMsgPPC - put a message to a message port (V11) CPU PowerPC SYNOPSIS PutMsgPPC(_PowerPCBase, MsgPortPPC, message) r3 r4 r5 void PutMsgPPC(struct Library *, struct MsgPortPPC *, struct Messge *); FUNCTION This function attaces a message to the end of the given port. In opposition to exec/PutMsg, only ports with PA_SIGNAL are supported. This is the mirror function of exec/PutMsg. INPUTS _PowerPCBase - base of powerpc.library port - a pointer to a message port message - a pointer to the message to be sent NOTES This function is safe to call from exception handlers. SEE ALSO WaitPortPPC, GetMsgPPC, ReplyMsgPPC, powerpc/portsPPC.i powerpc.library/PutXMsgPPC powerpc.library/PutXMsgPPC NAME PutXMsgPPC - sends an Inter-CPU message to a 68K task (V12) CPU PowerPC SYNOPSIS PutXMsgPPC(_PowerPCBase, MsgPort, message) r3 r4 r5 void PutXMsgPPC(struct Library *, struct MsgPort *, struct Message *); FUNCTION This function sends an Inter-CPU message allocated by 'AllocXMsgPPC' to a 68K task. INPUTS _PowerPCBase - base of powerpc.library MsgPort - an exec message port message - a message allocated by 'AllocXMsgPPC'. NOTES Inter-CPU must NOT be used for internal communication. They can only be used for communication between tasks on different processors. Inter-CPU messages get a different node type, if they are sent. If you want to filter out Reply-Messages from standard or Inter-CPU messages, compare the LN_TYPE field to NT_REPLYMSG. Replied Inter-CPU messages still get the same node type (NT_REPLYMSG). Any assumptions about the value of the new node type are ILLEGAL!! As soon as an Inter-CPU message is sent, the PPC looses ownership over the message. No access to the message is allowed until the reply has been arrived. If no replyport was specified, it's allowed to free the message, after it was read from the other side. Inter-CPU messages can be reused if they have been replied. Inter-CPU messages are read and replied using the standard message handling mechanisms (exec/WaitPort,exec/GetMsg,exec/ReplyMsg for 68K, powerpc/WaitPortPPC, powerpc/GetMsgPPC, powerpc/ReplyMsgPPC for PPC). The receiving task must NOT access message data, which are not explicitely located in the message body (for example data which is referenced by a pointer) unless both tasks care for the cache consistency. Only the message itself is flushed/invalidated automatically by the system. The receiving task may write to the message body of an Inter-CPU message. SEE ALSO AllocXMsgPPC, FreeXMsgPPC powerpc.library/ReleaseSemaphorePPC powerpc.library/ReleaseSemaphorePPC NAME ReleaseSemaphorePPC - make signal semaphore available to others (V8) CPU PowerPC SYNOPSIS ReleaseSemaphorePPC(_PowerPCBase, SignalSemaphorePPC) r3 r4 void ReleaseSemaphorePPC(struct Library *, struct SignalSemaphorePPC *); FUNCTION Releases a semaphore locked by either ObtainSemaphorePPC or AttemptSemaphorePPC. If other tasks are waiting, the foremost in the waiting queue is waked up. INPUTS _PowerPCBase - base of powerpc.library SignalSemaphorePPC - pointer to a signalsemaphorePPC structure NOTES This call is guaranteed to preserve all GPR (except r0) and the CTR. If the semaphore is in an illegal state after calling ReleaseSemaphorePPC, a system message will appear and the task is put into waiting state. SEE ALSO InitSemaphorePPC, FreeSemaphorePPC, ObtainSemaphorePPC, AttemptSemaphorePPC, AddSemaphorePPC, RemSemaphorePPC FindSemaphorePPC, powerpc/semaphoresPPC.i powerpc.library/RemExcHandler powerpc.library/RemExcHandler NAME RemExcHandler - removes a custom exception handler (V9) CPU PowerPC SYNOPSIS RemExcHandler(_PowerPCBase, XLock) r3 r4 void RemExcHandler(struct Library *, void *); FUNCTION Removes an exception handler inserted by the function SetExcHandler. INPUTS _PowerPCBase - base of powerpc.library XLock - The lock value returned by SetExcHandler. It's safe to pass NULL as parameter SEE ALSO RemExcHandler, powerpc/powerpc.i powerpc.library/RemHeadPPC powerpc.library/RemHeadPPC NAME RemHeadPPC - removes the head node from a list (V8) CPU PowerPC SYNOPSIS node = RemHeadPPC(_PowerPCBase, list) r3 r3 r4 struct Node *RemHeadPPC(struct Library *, struct List*); FUNCTION Removes the head node of a list. This is the mirror function of exec/RemHead. INPUTS _PowerPCBase - base of powerpc.library (can be omitted) list - the target list from which the head node should be removed RESULT node - the node removed or 0 if the list was empty NOTES This function is guaranteed to work correctly, if the PowerPCBase is not passed in r3. Assembler programmers may use the macro _REMHEAD located in 'powerpc/listsPPC.i' This function is safe to call from exception handlers. SEE ALSO InsertPPC, AddTailPPC, AddHeadPPC, RemovePPC, RemTailPPC, EnqueuePPC, FindNamePPC, powerpc/listsPPC.i powerpc.library/RemovePPC powerpc.library/RemovePPC NAME RemovePPC - removes a node from a list (V8) CPU PowerPC SYNOPSIS RemovePPC(_PowerPCBase, node) r3 r4 void RemovePPC(struct Library *, struct Node*); FUNCTION Removes a node from whatever list it is in. This is the mirror function of exec/Remove. INPUTS _PowerPCBase - base of powerpc.library (can be omitted) node - the node to remove NOTES This function is guaranteed to work correctly, if the PowerPCBase is not passed in r3. Assembler programmers may use the macro _REMOVE located in 'powerpc/listsPPC.i' This function is safe to call from exception handlers. SEE ALSO InsertPPC, AddTailPPC, AddHeadPPC, RemHeadPPC, RemTailPPC, EnqueuePPC, FindNamePPC, powerpc/listsPPC.i powerpc.library/RemPortPPC powerpc.library/RemPortPPC NAME RemPortPPC - removes a public PPC message port from the system (V11) CPU PowerPC SYNOPSIS RemPortPPC(_PowerPCBase, MsgPortPPC) r3 r4 void RemPortPPC(struct Library *, struct MsgPortPPC *); FUNCTION This function removes a public message port from the global list of message ports. It is the mirror function of exec/RemPort. INPUTS _PowerPCBase - base of powerpc.library MsgPortPPC - pointer to a PPC message port. It's safe to pass a NULL parameter. SEE ALSO CreateMsgPortPPC,DeleteMsgPortPPC,FindPortPPC,AddPortPPC powerpc/portsPPC.i powerpc.library/RemTailPPC powerpc.library/RemTailPPC NAME RemTailPPC - removes the tail node from a list (V8) CPU PowerPC SYNOPSIS node = RemTailPPC(_PowerPCBase, list) r3 r3 r4 struct Node *RemTailPPC(struct Library *, struct List*); FUNCTION Removes the tail node of a list. This is the mirror function of exec/RemTail. INPUTS _PowerPCBase - base of powerpc.library (can be omitted) list - the target list from which the tail node should be removed RESULT node - the node removed or 0 if the list was empty NOTES This function is guaranteed to work correctly, if the PowerPCBase is not passed in r3. Assembler programmers may use the macro _REMTAIL located in 'powerpc/listsPPC.i' This function is safe to call from exception handlers. SEE ALSO InsertPPC, AddTailPPC, AddHeadPPC, RemovePPC, RemHeadPPC, EnqueuePPC, FindNamePPC, powerpc/listsPPC.i powerpc.library/RemSemaphorePPC powerpc.library/RemSemaphorePPC NAME RemSemaphorePPC - removes a global signal semaphore (V8) CPU PowerPC SYNOPSIS RemSemaphorePPC(_PowerPCBase, SignalSemaphorePPC) r3 r4 void RemSemaphorePPC(struct Library *, struct SignalSemaphorePPC *); FUNCTION Removes a global signal semaphore created by AddSemaphorePPC. This is the mirror function of exec/RemSemaphore. INPUTS _PowerPCBase - base of powerpc.library SignalSemaphorePPC - pointer to a signalsemaphorePPC structure SEE ALSO InitSemaphorePPC, FreeSemaphorePPC, ObtainSemaphorePPC, AttemptSemaphorePPC, ReleaseSemaphorePPC, AddSemaphorePPC, FindSemaphorePPC, powerpc/semaphoresPPC.i powerpc.library/ReplyMsgPPC powerpc.library/ReplyMsgPPC NAME ReplyMsgPPC - put a message to its reply port (V11) CPU PowerPC SYNOPSIS ReplyMsgPPC(_PowerPCBase, message) r3 r4 void ReplyMsgPPC(struct Library *, struct Messge *); FUNCTION This function sends a message to its reply port, if one is present. This is the mirror function of exec/ReplyMsg. INPUTS _PowerPCBase - base of powerpc.library message - a pointer to the message to be replied NOTES This function is safe to call from exception handlers. SEE ALSO WaitPortPPC, PutMsgPPC, GetMsgPPC, powerpc/portsPPC.i powerpc.library/Run68K powerpc.library/Run68K NAME Run68K - runs a 680x0 function resp. AMIGA-OS library function (V7) CPU PowerPC SYNOPSIS status = Run68K(_PowerPCBase, PPStruct ) r3 r3 r4 LONG RunPPC (struct Library *, struct PowerPC *); FUNCTION Runs a 680x0 function or an AMIGA-OS library function. All registers can be transferred to 68K as well as parameters on stack. All cache management actions are handled automatically. All registers are transferred back from 68K after the 68K call is completed. They are stored in the PowerPC structure. See RunPPC for the register assignment. INPUTS _PowerPCBase - base of powerpc.library PPStruct - Pointer to an initialized PowerPC Structure PP_CODE : Pointer to the 680x0 code resp. pointer to the library base (if PP_OFFSET is not zero). PP_OFFSET : Library offset or 0 if no library function is called. PP_FLAGS : Flags which can be ore'd together - PP[F/P]_ASYNC : call 68K function asynchronely (PPC process returns immediately) PP_STACKPTR : Pointer to the arguments on the stack to be transferred. The pointer must point to the top of the calling process' stackframe. The stack area to be transferred is located at offset 24 from this position. If no arguments on stack should be transferred, set this to zero. PP_STACKSIZE : Size of the stack area to be transferred. If no stack parameters should be transferred, set this to zero. PP_REGS : Array of longwords where the registers to be transferred can be stored (d0-a6) PP_FREGS : Array of quadwords (8 bytes) where the FP-registers to be transferred can be stored (fp0-fp7) RESULT status - PPERR_SUCCESS if the call was successfully PPERR_ASYNCERR if a synchrone 68K call was made after an asynchrone 68K call NOTES Calling a 68K function asynchronely is dangerous. Take care of possible cache conflicts. Avoid calling system functions as much as possible. If an asynchrone 68K call is done, the function WaitFor68K MUST be called ONCE after the call was done. No other 68K call is allowed for this PPC process after an asynchrone 68K call and before a call to WaitFor68K. If an asynchronely called 68K function performs a PPC call, the call is only performed when WaitFor68K is called by the PPC process. Note that the 68K mirror process is still connected to the calling PPC process. DON'T pass arguments on stack when calling a 68K function asynchronely. The stack is most likely to be trashed before it is copied to the 68K stack. Assembler programmers should use the macros RUN68K and RUN68K_XL located in the include file 'powerpc/powerpc.i' SEE ALSO WaitFor68K,powerpc/powerpc.i powerpc.library/SetCache powerpc.library/SetCache NAME SetCache - cache manipulation function (V8) CPU PowerPC SYNOPSIS SetCache(_PowerPCBase, cacheflags, start, length) r3 r4 r5 r6 void SetCache(struct Library *, ULONG, void *, ULONG); FUNCTION This function offers many possibilities to affect the caches of the PPC. It performs the action defined by the cache flags. Only one action can be performed at the same time. INPUTS _PowerPCBase - base of powerpc.library cacheflags - action to be performed: CACHE_DCACHEOFF: Data cache is disabled. The Cache is flushed automatically. CACHE_DCACHEON: Data cache is enabled. CACHE_DCACHELOCK: Data cache is locked (is ignored if either 'start' or 'length' is zero). CACHE_DCACHEUNLOCK: Data cache is unlocked. CACHE_DCACHEFLUSH: Data cache is flushed. CACHE_ICACHEOFF: Instruction cache is disabled. CACHE_ICACHEON: Instruction cache is enabled. CACHE_ICACHELOCK: Instruction cache is locked. CACHE_ICACHEUNLOCK: Instruction cache is unlocked. CACHE_ICACHEINV: Instruction cache is invalidated. start - pointer to the start address of the area to be affected. The following cacheflags support an area specification: CACHE_DCACHELOCK, CACHE_DCACHEFLUSH, CACHE_ICACHEINV if 'start' is 0 the whole address space is affected length - length of the area to be affected (see above for the cache flags which support area specification). if 'length' is 0 the whole address space is affected NOTES Invalidating the whole instruction cache is much more efficient than flushing only a part of it. Flushing the whole data cache is less efficient than flushing a specific area, if this area is not too large. The cacheflag DCACHELOCK requires 'start' and 'length' to be not zero. The area specified is then copied into the data cache and the data cache is locked afterwards. The caches should not be switched on/off resp. locked/unlocked without GOOD justification. Global manipulations of the cache should be avoided. Better affect the cache locally by using AllocVecPPC. This function is safe to call from exception handlers SEE ALSO powerpc/powerpc.i powerpc.library/SetExcHandler powerpc.library/SetExcHandler NAME SetExcHandler - insert a custom exception handler (V9) CPU PowerPC SYNOPSIS XLock = SetExcHandler(_PowerPCBase, ExcTags) r3 r3 r4 void *SetExcHandler(struct Library *, struct TagItem *); FUNCTION This function allows applications to insert custom exception handlers. Those handlers can be global or task dependant, priorities are also supported. Multiple exceptions can be selected for one exception handler. The exception handlers are executed in supervisor mode and have access to all supervisor registers. The handlers are called in one of two possible ways (dependant of the tag EXC_FLAGS): 1) EXC_FLAGS has the flag EXCF_SMALLCONTEXT set: Status = CustomHandler(SmallContext) r3 r3 ULONG CustomHandler(struct XCONTEXT*) Inputs: SmallContext - a pointer to a XCONTEXT structure (see powerpc/powerpc.i) Result: Status - a return value which decides, whether the exception should be leaved immediately or if following exception handlers should be executed, too (see powerpc/powerpc.i) In this first method, the handler gets all registers directly, except for r3, which is passed in the XCONTEXT structure. The exception ID, which gives information about the kind of exception occurred, is passed also in XCONTEXT structure. All registers which are modified by the exception handler are also modified for the interrupted task. If r3 should be modified for the interrupted task, the appropriate field of the XCONTEXT structure has to be modified. Some of the interrupted task's registers are passed in special supervisor registers. If they should be changed, the appropriate supervisor registers have to be changed: SPRG1 - The interrupted task's Link Register SPRG2 - The interrupted task's Stackpointer (r1) SPRG3 - The interrupted task's Smalldata Base (r2) The exception stack, which is passed in r1, is allocated from the user stack of the interrupted task. 2) EXC_FLAGS has the flag EXCF_LARGECONTEXT set: Status = CustomHandler(LargeContext) r3 r3 ULONG CustomHandler(struct EXCCONTEXT*) Inputs: LargeContext - a pointer to a EXCCONTEXT structure (see powerpc/powerpc.i) Result: Status - a return value which decides, whether the exception should be leaved immediately or if following exception handlers should be executed, too (see powerpc/powerpc.i) In this second method, the handler gets all registers in the EXCCONTEXT structure. If the handler wishes to change some of the register contents it must change the appropriate fields in the EXCCONTEXT structure which are copied back to the registers after the custom handler has completed. If no field is provided for a certain register, it has to be modified directly. The exception stack, which is passed in r1, is allocated from the user stack of the interrupted task. INPUTS _PowerPCBase - base of powerpc.library ExcTags - pointer to a tagitem array. The following tags are supported: EXCATTR_CODE: pointer to the exception handler code (required) EXCATTR_DATA: a user data which is passed in r2 to the custom exception handler. This is usually a base register which provides access to all global data required. EXCATTR_TASK: specifies the task which is allowed to take the exception handler. If this tag is 0 or omitted, the current task is taken instead. This tag has no effect if the exception handler is specified as global (see below at EXCATTR_FLAGS) EXCATTR_EXCID: Defines which exceptions should call this exception handler. See powerpc/powerpc.i for a description of all supported exceptions. Multiple exceptions can be selected. EXCATTR_FLAGS: EXCF_GLOBAL: Marks the exception handler as global. It is then called for every exception occurred. EXCF_LOCAL: Marks the exception handler as local. It is then only called, if the interrupted task matches the task specified in EXCATTR_TASK. EXCF_SMALLCONTEXT: The exception handler is called with a XCONTEXT structure as parameter (see above for a description of this mode). EXCF_LARGECONTEXT: The exception handler is called with a EXCCONTEXT structure as parameter (see above for a description of this mode). One flag of EXCF_GLOBAL and EXCF_LOCAL and one flag of EXCF_SMALLCONTEXT and EXCF_LARGECONTEXT must be specified, otherwise this function fails. EXCATTR_NAME: An identification name for this handler EXCATTR_PRI: The priority of this exception handler RESULT XLock - A lock to be passed to RemExcHandler or 0 if something failed. NOTES Exception handlers should generally take care that they don't destroy any registers of the interrupted task except if it is desired. Special care must be taken if the exception handler is called with the small context structure (take care of r0!). All registers, inclusive CR, CTR, LR and others must be restored if they should not be changed. IMPORTANT: The exception handler is called with MMU switched off! The whole address space is accessed in cachable copyback mode, so no access to critical locations such as custom chip space must be performed. If such locations should be accessed, a temporary MMU setup must be done using the library functions 'SetExcMMU' and 'ClearExcMMU' (V10) Note that changes to the MSR of the interrupted task must be done by writing to SRR1 (i.e. setting the trace bit). Note that exception handlers should generally not call system functions with some exceptions (for example 'SignalPPC' is often useful to call from exception handlers). System functions must not be called unless it's allowed explicitely by the documentation of each function. Note that the content of the program counter (SRR0) differs depending on the exception type. Sometimes it contains the address of the excepting instruction and sometimes the address of the next instruction to complete. Exception handlers must take care about this and should set the program counter appropriately. Here follows a table of all supported exceptions and their behaviour: Machine check (EXCF_MCHECK): PC -> maybe next instruction Data access (EXCF_DACCESS): PC -> excepting instruction Instruction access (EXCF_IACCESS): PC -> next instruction Alignment (EXCF_ALIGN): PC -> excepting instruction Program (EXCF_PROGRAM): PC -> excepting instruction FP unavailable (EXCF_FPUN): PC -> excepting instruction Trace (EXCF_TRACE): PC -> next instruction Performance Monitor (EXCF_PERFMON): unknown Instruction breakpoint (EXCF_IABR): PC -> excepting instruction Exception handlers should not waste stack space. The system allocates an extra space for this purpose but it may not be sufficient if very stack-intensive routines are called as exception handlers. If every exception handler returns the state EXCRETURN_NORMAL then the standard WarpOS exception handler is executed (except for Trace- and PerformanceMonitor-Exceptions). If exception handlers are written to emulate commands causing an exception they should return EXCRETURN_ABORT as return value to suppress following exception handlers which might output some alert messages. The priority should be probably high enough to ensure that no unwanted reactions occur. The WarpOS debugging system is disabled during exception processing. It's completely ILLEGAL to exit an exception handler by an RFI instruction!! It's also illegal to trash SPRG0! SEE ALSO RemExcHandler, powerpc/powerpc.i powerpc.library/SetExcMMU powerpc.library/SetExcMMU NAME SetExcMMU - installs a BAT based MMU setup for exception handlers (V10) CPU PowerPC SYNOPSIS SetExcMMU(_PowerPCBase) r3 void SetExcMMU(struct Library *); FUNCTION This function is for exception handlers only. It installs a new temporary MMU setup which allows exception handlers to access critical address space, such as custom chip space. Exception handlers are normally run with MMU switched off to avoid problems on systems without hardware tablesearch. The new MMU setup is based on the BAT registers. The function 'ClearExcMMU' restores the old MMU state and should be called at the end of the exception handler. INPUTS _PowerPCBase - base of powerpc.library NOTES This function must not be called from anywhere else than from an exception handler. SEE ALSO ClearExcMMU powerpc.library/SetHardware powerpc.library/SetHardware NAME SetHardware - hardware manipulation function (V9) CPU PowerPC SYNOPSIS Status = SetHardware(_PowerPCBase, hardwareflags, parameter) r3 r4 r5 ULONG SetHardware(struct Library *, ULONG, void *); FUNCTION This function offers some functions to access the PPC hardware. INPUTS _PowerPCBase - base of powerpc.library hardwareflags - action to be performed: HW_TRACEON: Enables trace mode for the current task HW_TRACEOFF: Disables trace mode for the current task HW_BRANCHTRACEON: Enables branch trace mode for the current task HW_BRANCHTRACEOFF: Disables branch trace mode for the current task HW_FPEXCON: Enables the floating point exceptions for the current task HW_FPEXCOFF: Disables the floating point exceptions for the current task HW_SETIBREAK: Sets the global instruction breakpoint HW_CLEARIBREAK: Clears the global instruction breakpoint HW_SETDBREAK: Sets the global data breakpoint HW_CLEARDBREAK: Clears the global data breakpoint parameter - additional parameter only used if a breakpoint should be set. Then it contains the breakpoint address. RESULT Status - HW_AVAILABLE: The requested feature is available on this CPU HW_NOTAVAILABLE: The requested feature is not available on this CPU NOTES Floating point exceptions are only enabled globally with HW_FPEXCON. It's necessary to call 'ModifyFPExc' to enable the desired floating point exceptions. Floating point exceptions should not be enabled by standard applications. They are intended to use for debugging purposes. The data breakpoint feature is not available on PPC603[E]. SEE ALSO ModifyFPExc, powerpc/powerpc.i powerpc.library/SetNiceValue powerpc.library/SetNiceValue NAME SetNiceValue - sets the NICE value of a task (V14) CPU PowerPC SYNOPSIS OldNice = SetNiceValue(_PowerPCBase, TaskPPC, Nice) r3 r3 r4 r5 LONG* SetNiceValue(struct Library *, struct TaskPPC *, LONG); FUNCTION This function can be used to set the NICE value of a task. The NICE value is a kind of priority, which replaces the old priority in LN_PRI. NICE values were introduced with the dynamic scheduler which works very differently than the old scheduler. If a task gets a high NICE value, it means that the task is nice to other tasks and won't request much CPU time. If a task gets a low NICE value, the opposite occurs. Using NICE values it is possible to affect execution speed of tasks. INPUTS _PowerPCBase - base of powerpc.library TaskPPC - pointer to the task which should be affected Nice - the NICE value (-20 ... 20) RESULT The old NICE value SEE ALSO SetTaskPriPPC, powerpc/tasksPPC.i, powerpc/tasksPPC.h powerpc.library/SetReplyPortPPC powerpc.library/SetReplyPortPPC NAME SetReplyPortPPC - exchanges the reply port of a message (V13) CPU PowerPC SYNOPSIS OldPort = SetReplyPortPPC(_PowerPCBase, Message, MsgPortPPC) r3 r3 r4 r5 struct MsgPortPPC* SetReplyPortPPC(struct Library *, struct Message *, struct MsgPortPPC *); FUNCTION This function exchanges the message port of a message. It can be used for internal PPC messages and for InterCPU messages. INPUTS _PowerPCBase - base of powerpc.library Message - a pointer to the message affected MsgPortPPC - a pointer to a PPC message port RESULT The old reply port, which was installed in the message. Can be NULL, of course. NOTES It's possible to specify NULL as MsgPort to remove the reply port. Don't poke into the message structure at MN_REPLYPORT, please use this function here. SEE ALSO WaitPortPPC, GetMsgPPC, ReplyMsgPPC, PutMsgPPC, powerpc/portsPPC.i powerpc.library/SetScheduling powerpc.library/SetScheduling NAME SetScheduling - affects scheduling behaviour (V14) CPU PowerPC SYNOPSIS SetScheduling(_PowerPCBase, SchedTagList) r3 r4 void SetScheduling(struct Library *, struct TagItem *); FUNCTION This function is used to set some scheduling parameters. INPUTS _PowerPCBase - base of powerpc.library SchedTagList - pointer to a tagitem array. The following tags are supported: SCHED_REACTION: Sets the reaction time of low-activity tasks. This value can be in range of (1..20). The higher the value the more CPU time a low-activity task gets (but which causes longer blocking of busy tasks). Default is currently 6. NOTES This function is safe to call from exception handlers. SEE ALSO powerpc/powerpc.i powerpc.library/SetSignalPPC powerpc.library/SetSignalPPC NAME SetSignalPPC - define the state of this task's signals (V8) CPU PowerPC SYNOPSIS oldSignals = SetSignalPPC(_PowerPCBase, newSignals, signalMask) r3 r3 r4 r5 ULONG SetSignalPPC(struct Library *, ULONG, ULONG); FUNCTION This function can query or modify the state of the current signals. This function is the mirror function of exec/SetSignal. INPUTS _PowerPCBase - base of powerpc.library newSignals - the new values for the signals signalMask - the set of signals to be affected. RESULT oldSignals - the prior values for all signals NOTES It's possible to check for the system signals (i.e. CTRL_C). Before V11, this only worked if the task was stated using RunPPC, this is not the case anymore. SEE ALSO AllocSignalPPC, FreeSignalPPC, SignalPPC, WaitPPC powerpc.library/SetTaskPriPPC powerpc.library/SetTaskPriPPC NAME SetTaskPriPPC - get and set the priority of a task (V8) CPU PowerPC SYNOPSIS oldpriority = SetTaskPriPPC(_PowerPCBase, taskPPC, priority) r3 r3 r4 r5 LONG SetTaskPriPPC(struct Library *, struct TaskPPC *, LONG); FUNCTION This function changes the priority of a task regardless of its state. The old priority of the task is returned. A reschedule may be performed. This is the mirror function of exec/SetTaskPri. Important: These task priorities are completely useless from V14 on because of the new dynamic scheduler which uses NICE values instead of fixed priorities. Use 'SetNiceValue' to give tasks more or less CPU time. INPUTS _PowerPCBase - base of powerpc.library taskPPC - task to be affected priority - the new priority for the task RESULT old priority - the tasks previous priority SEE ALSO SetNiceValue powerpc.library/Signal68K powerpc.library/Signal68K NAME SignalPPC - signal a 68K task (V8) CPU PowerPC SYNOPSIS Signal68K(_PowerPCBase, task, signals) r3 r4 r5 void Signal68K(struct Library *, struct Task*, ULONG); FUNCTION This function signals a 68K task with the given signals. If the signalled task is sleeping, it's woken up and a reschedule may occur. INPUTS _PowerPCBase - base of powerpc.library task - the 68K task to be signalled signals - the signals to be sent powerpc.library/SignalPPC powerpc.library/SignalPPC NAME SignalPPC - signal a task (V8) CPU PowerPC SYNOPSIS SignalPPC(_PowerPCBase, taskPPC, signals) r3 r4 r5 void SignalPPC(struct Library *, struct TaskPPC*, ULONG); FUNCTION This function signals a task with the given signals. If the signalled task is sleeping, it's woken up and a reschedule may occur. This is the mirror function of exec/Signal. INPUTS _PowerPCBase - base of powerpc.library taskPPC - the task to be signalled signals - the signals to be sent NOTES This function is safe to call from exception handlers. Since V11 it's possible to signal a 68K task directly with 'SignalPPC' and the 68K task structure in r4. Before V11, 'SignalPPC' only worked, if the PPC task had a mirror 68K task. Since V11, every PPC task has a mirror task, so 'SignalPPC' can always be used. Furthermore, all signals, which are sent to a task currently waiting for its mirror task to complete, are transferred automatically to the mirror task. In fact, the whole signal system is shared and can be viewed as one single 'virtual signaling system'. It really doesn't matter, on which CPU a program is running, the signals are always transferred to the currently active part. SEE ALSO AllocSignalPPC, FreeSignalPPC, SetSignalPPC, WaitPPC powerpc.library/SnoopTask powerpc.library/SnoopTask NAME SnoopTask - monitors beginning or end of a PPC task (V13) CPU PowerPC SYNOPSIS SnoopID = SnoopTask (_PowerPCBase, SnoopTags) r3 r3 r4 ULONG SnoopTask (struct Library *, struct TagItem *); FUNCTION This function allows to intall a callback job, which is executed when a new PPC task is started or when a PPC task is removed. This is useful for debuggers which want to be kept informed about new tasks installed into the system and about tasks removed from the system. The callback function has two different formats (prototypes), dependant on the type of callback: 1. callback function for monitoring the beginning of a PPC task (SNOOP_TYPE = TASK_START) SYNOPSIS: CallbackFunction (PPCTask, EntryCode, CreatorTask, CreatorCPU) r3 r4 r5 r6 void CallbackFunction (struct TaskPPC *, APTR, struct Task *, ULONG); INPUTS: PPCTask - pointer to the new PPC task which is created EntryCode - pointer to the start code, which will be executed by the new task CreatorTask - pointer to the task structure of the task, which created the new PPC task. If the new task is created due to a call of RunPPC from 68K side, then the CreatorTask points to the 68K-Task-Structure. If the PPC task was created by directly calling 'CreateTaskPPC', CreatorTask points to this PPC task. CreatorCPU - One of two possible values: CREATOR_PPC : The new PPC task was created using 'CreateTaskPPC' by a PPC task. CREATOR_68K : The new PPC task was created using 'RunPPC' by a 68K task. 2. callback function for monitoring the end of a PPC task (SNOOP_TYPE = TASK_EXIT) SYNOPSIS: CallbackFunction (PPCTask) r3 void CallbackFunction (struct TaskPPC *); INPUTS: PPCTask - pointer to the PPC task which is removed. NEVER use FindTaskPPC(NULL), because it's possible that a PPC task is removed by another PPC task! INPUTS _PowerPCBase - base of powerpc.library TagItems - pointer to a tagitem array. The following tags are supported: SNOOP_CODE: pointer to the callback function which should be called, if a new PPC task is created or if a PPC task is removed. SNOOP_DATA: custom data which passed in register r2. this will usually be the smalldata base of the task which wants to snoop other tasks to gain access to more data space. SNOOP_TYPE: two possible values: SNOOP_START : The callback function is called when a new PPC task is created SNOOP_EXIT : The callback function is called when a PPC task is removed RESULT SnoopID - An ID, which must be passed to EndSnoopTask, as soon as the snooping action should be terminated. NULL, if an error occurs. SEE ALSO EndSnoopTask powerpc.library/SPrintF powerpc.library/SPrintF NAME SPrintF - prints a formatted string to the serial port (V7) CPU PowerPC SYNOPSIS SPrintF (_PowerPCBase, Formatstring, values ) r3 r4 r5 void SPrintF (struct Library *, STRPTR, APTR); FUNCTION Prints a formatted string to the serial port using the AMIGA-OS functions 'exec/RawPutChar' and 'exec/RawDoFmt'. Can be used to add debugging features and to improve the maintenance of software. INPUTS _PowerPCBase - base of powerpc.library Formatstring - A C style string with % commands to indicate where parameters have to be inserted (see 'exec/RawDoFmt' for a detailed description of these commands). values - A pointer to an array of parameters to be inserted into specified places in the string. SEE ALSO exec/RawDoFmt powerpc.library/SubTimePPC powerpc.library/SubTimePPC NAME SubTimePPC - subtracts one time request from another (V7) CPU PowerPC SYNOPSIS SubTimePPC(_PowerPCBase, Dest, Source) r3 r4 r5 void SubTimePPC(struct Library *, struct timeval *, struct timeval *); FUNCTION This routine subtracts one timeval structure from another. The results are stored in the destination (Dest - Source -> Dest) This is the mirror function of timer/SubTime. INPUTS _PowerPCBase - base of powerpc.library Dest - pointer to a timeval structure Source - pointer to a timeval structure NOTES This function is safe to call from exception handlers SEE ALSO GetSysTimePPC, AddTimePPC, CmpTimePPC powerpc.library/Super powerpc.library/Super NAME Super - switch to supervisor mode (V9) CPU PowerPC SYNOPSIS SuperKey = Super(_PowerPCBase) r3 r3 ULONG Super(struct Library *); FUNCTION This function changes the current task to supervisor mode. INPUTS _PowerPCBase - base of powerpc.library RESULT SuperKey - A key value which must be passed to 'User' to switch back to user mode NOTES Applications should generally not enter supervisor mode. Check first if there exists a library function which gives you access to the supervisor resources required. SEE ALSO User powerpc.library/UnLockTaskList powerpc.library/UnLockTaskList NAME UnLockTaskList - unlocks a list locked by LockTaskList (V10) CPU PowerPC SYNOPSIS UnLockTaskList(_PowerPCBase) r3 void UnLockTaskList(struct Library *); FUNCTION Unlocks the task list which was locked by LockTaskList INPUTS _PowerPCBase - base of powerpc.library SEE ALSO LockTaskList, powerpc/tasksppc.i powerpc.library/User powerpc.library/User NAME User - switch to user mode (V9) CPU PowerPC SYNOPSIS User(_PowerPCBase, SuperKey) r3 r4 void User(struct Library *, ULONG); FUNCTION This function changes the current task to user mode. INPUTS _PowerPCBase - base of powerpc.library SuperKey - The return value of the matching call of 'Super' SEE ALSO Super powerpc.library/WaitFor68K powerpc.library/WaitFor68K NAME WaitFor68K - waits for the completion of an asynchrone 68K call (V7) CPU PowerPC SYNOPSIS status = WaitFor68K(_PowerPCBase, PPStruct ) r3 r3 r4 LONG WaitFor68K (struct Library *, struct PowerPC *); FUNCTION After an asynchrone 68K call was done (see Run68K) this function must be called to wait for the completion of the 68K function. All registers transferred to the PowerPC with Run68K are returned into the PowerPC Structure. INPUTS _PowerPCBase - base of powerpc.library PPStruct - Pointer to a PowerPC Structure (see Run68K for a description of the elements). The structure has not to be initialized. The structure must be transferred to hold the returned registers by the 68K function. RESULT status - PPERR_SUCCESS if the call was successfully PPERR_WAITERR if WaitFor68K is called after a synchrone 68K call. NOTES Assembler programmers should use the macros WAITFOR68K and WAITFOR68K_XL located in the include file 'powerpc/powerpc.i' SEE ALSO Run68K,powerpc/powerpc.i powerpc.library/WaitPortPPC powerpc.library/WaitPortPPC NAME WaitPortPPC - wait for a given port to be non-empty (V11) CPU PowerPC SYNOPSIS message = WaitPortPPC(_PowerPCBase, MsgPortPPC) r3 r3 r4 struct Message *WaitPortPPC(struct Library *, struct MsgPortPPC *); FUNCTION This function waits until the given port becomes non-empty. The first message in the port is returned without removing it from the port. This is the mirror function of exec/WaitPort. INPUTS _PowerPCBase - base of powerpc.library port - a pointer to a message port RESULTS message - a pointer to the first available message SEE ALSO PutMsgPPC, GetMsgPPC, ReplyMsgPPC, powerpc/portsPPC.i powerpc.library/WaitPPC powerpc.library/WaitPPC NAME WaitPPC - wait for one or more signals (V8) CPU PowerPC SYNOPSIS signals = WaitPPC(_PowerPCBase, signalSet) r3 r3 r4 ULONG WaitPPC(struct Library *, ULONG); FUNCTION This function attempts to wait for the given signals. If at least one of these signal is already set, the task returns immediately, otherwise it changes to waiting state. This is the mirror function of exec/Wait. INPUTS _PowerPCBase - base of powerpc.library signalSet - the set of signals for which to wait RESULTS signals - the signals which were received NOTES Since V11 it's possible to wait for signals which might be sent by 68K tasks (and maybe only to the mirror 68K task of this PPC task here). Calling exec/Signal with a PPC task structure as first argument will work, too. See the desription of 'SignalPPC' for more information about the shared signaling system. SEE ALSO AllocSignalPPC, FreeSignalPPC, SetSignalPPC, SignalPPC powerpc.library/WaitTime powerpc.library/WaitTime NAME WaitTime - wait for a given time or for given signals (V10) CPU PowerPC SYNOPSIS signals = WaitTime(_PowerPCBase, signalSet, time) r3 r3 r4 r5 ULONG WaitTime(struct Library *, ULONG, ULONG); FUNCTION This function attempts to wait for a specific time of for given signals. This function acts just like 'WaitPPC' with the difference that the task returns when the time specified is over. INPUTS _PowerPCBase - base of powerpc.library signalSet - the set of signals for which to wait (can be 0 if the task should only wait for a given time) time - the time in microseconds to wait RESULTS signals - the signals which were received (if this value is 0, then the time is up). NOTES The time which explicitly passes between calling 'WaitTime' and returning from it can vary dependant of current system state. If many tasks are active, the time can be delayed. Furthermore the overhead of this function must be taken in account. SEE ALSO WaitPPC