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- /* Definitions to make GDB run on Convex Unix (4bsd)
- Copyright (C) 1989 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- GDB is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- GDB is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GDB; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Describe the endian nature of this machine. */
- #define BITS_BIG_ENDIAN
- #define BYTES_BIG_ENDIAN
- #define WORDS_BIG_ENDIAN
-
- /* Include certain files for dbxread.c */
- #include <convex/filehdr.h>
- #include <convex/opthdr.h>
- #include <convex/scnhdr.h>
- #include <nlist.h>
-
- #define LONG_LONG
- #define ATTACH_DETACH
- #define HAVE_WAIT_STRUCT
- #define NO_SIGINTERRUPT
-
- /* Get rid of any system-imposed stack limit if possible. */
-
- #define SET_STACK_LIMIT_HUGE
-
- /* Define this if the C compiler puts an underscore at the front
- of external names before giving them to the linker. */
-
- #define NAMES_HAVE_UNDERSCORE
-
- /* Debugger information will be in DBX format. */
-
- #define READ_DBX_FORMAT
-
- /* There is come problem with the debugging symbols generated by the
- compiler such that the debugging symbol for the first line of a
- function overlap with the function prologue. */
- #define PROLOGUE_FIRSTLINE_OVERLAP
-
- /* When convex pcc says CHAR or SHORT, it provides the correct address. */
-
- #define BELIEVE_PCC_PROMOTION 1
-
- /* Symbol types to ignore. */
- /* 0xc4 is N_MONPT. Use the numeric value for the benefit of people
- with (rather) old OS's. */
- #define IGNORE_SYMBOL(TYPE) \
- (((TYPE) & ~N_EXT) == N_TBSS \
- || ((TYPE) & ~N_EXT) == N_TDATA \
- || ((TYPE) & ~N_EXT) == 0xc4)
-
- /* Use SIGCONT rather than SIGTSTP because convex Unix occasionally
- turkeys SIGTSTP. I think. */
-
- #define STOP_SIGNAL SIGCONT
-
- /* Convex ld sometimes omits _etext.
- Get text segment end from a.out header in this case. */
-
- extern unsigned text_end;
- #define END_OF_TEXT_DEFAULT text_end
-
- /* Use csh to do argument expansion so we get ~ and such. */
-
- /* Doesn't work. */
- /* #define SHELL_FILE "/bin/csh" */
-
- /* Offset from address of function to start of its code.
- Zero on most machines. */
-
- #define FUNCTION_START_OFFSET 0
-
- /* Advance PC across any function entry prologue instructions
- to reach some "real" code.
- Convex prolog is:
- [sub.w #-,sp] in one of 3 possible sizes
- [mov psw,- fc/vc main program prolog
- and #-,- (skip it because the "mov psw" saves the
- mov -,psw] T bit, so continue gets a surprise trap)
- [and #-,sp] fc/vc O2 main program prolog
- [ld.- -(ap),-] pcc/gcc register arg loads
- */
-
- #define SKIP_PROLOGUE(pc) \
- { int op, ix; \
- op = read_memory_integer (pc, 2); \
- if ((op & 0xffc7) == 0x5ac0) pc += 2; \
- else if (op == 0x1580) pc += 4; \
- else if (op == 0x15c0) pc += 6; \
- if ((read_memory_integer (pc, 2) & 0xfff8) == 0x7c40 \
- && (read_memory_integer (pc + 2, 2) & 0xfff8) == 0x1240 \
- && (read_memory_integer (pc + 8, 2) & 0xfff8) == 0x7c48) \
- pc += 10; \
- if (read_memory_integer (pc, 2) == 0x1240) pc += 6; \
- for (;;) { \
- op = read_memory_integer (pc, 2); \
- ix = (op >> 3) & 7; \
- if (ix != 6) break; \
- if ((op & 0xfcc0) == 0x3000) pc += 4; \
- else if ((op & 0xfcc0) == 0x3040) pc += 6; \
- else if ((op & 0xfcc0) == 0x2800) pc += 4; \
- else if ((op & 0xfcc0) == 0x2840) pc += 6; \
- else break;}}
-
- /* Immediately after a function call, return the saved pc.
- (ignore frame and return *$sp so we can handle both calls and callq) */
-
- #define SAVED_PC_AFTER_CALL(frame) \
- read_memory_integer (read_register (SP_REGNUM), 4)
-
- /* Address of end of stack space.
- This is ((USRSTACK + 0xfff) & -0x1000)) from <convex/vmparam.h> but
- that expression depends on the kernel version; instead, fetch a
- page-zero pointer and get it from that. This will be invalid if
- they ever change the way bkpt signals are delivered. */
-
- #define STACK_END_ADDR (0xfffff000 & *(unsigned *) 0x80000050)
-
- /* User-mode traps push an extended rtn block,
- then fault with one of the following PCs */
-
- #define is_trace_pc(pc) ((unsigned) ((pc) - (*(int *) 0x80000040)) <= 4)
- #define is_arith_pc(pc) ((unsigned) ((pc) - (*(int *) 0x80000044)) <= 4)
- #define is_break_pc(pc) ((unsigned) ((pc) - (*(int *) 0x80000050)) <= 4)
-
- /* We need to manipulate trap bits in the psw */
-
- #define PSW_TRAP_FLAGS 0x69670000
- #define PSW_T_BIT 0x08000000
- #define PSW_S_BIT 0x01000000
-
- /* Stack grows downward. */
-
- #define INNER_THAN <
-
- /* Sequence of bytes for breakpoint instruction. (bkpt) */
-
- #define BREAKPOINT {0x7d,0x50}
-
- /* Amount PC must be decremented by after a breakpoint.
- This is often the number of bytes in BREAKPOINT but not always.
- (The break PC needs to be decremented by 2, but we do it when the
- break frame is recognized and popped. That way gdb can tell breaks
- from trace traps with certainty.) */
-
- #define DECR_PC_AFTER_BREAK 0
-
- /* Nonzero if instruction at PC is a return instruction. (rtn or rtnq) */
-
- #define ABOUT_TO_RETURN(pc) \
- ((read_memory_integer (pc, 2) & 0xffe0) == 0x7c80)
-
- /* Return 1 if P points to an invalid floating point value. */
-
- #define INVALID_FLOAT(p,len) 0
-
- /* Largest integer type */
-
- #define LONGEST long long
-
- /* Name of the builtin type for the LONGEST type above. */
-
- #undef BUILTIN_TYPE_LONGEST
- #define BUILTIN_TYPE_LONGEST builtin_type_long_long
-
- /* Say how long (ordinary) registers are. */
-
- #define REGISTER_TYPE long long
-
- /* Number of machine registers */
-
- #define NUM_REGS 26
-
- /* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
-
- #define REGISTER_NAMES {"pc","psw","fp","ap","a5","a4","a3","a2","a1","sp",\
- "s7","s6","s5","s4","s3","s2","s1","s0",\
- "S7","S6","S5","S4","S3","S2","S1","S0"}
-
- /* Register numbers of various important registers.
- Note that some of these values are "real" register numbers,
- and correspond to the general registers of the machine,
- and some are "phony" register numbers which are too large
- to be actual register numbers as far as the user is concerned
- but do serve to get the desired values when passed to read_register. */
-
- #define S0_REGNUM 25 /* the real S regs */
- #define S7_REGNUM 18
- #define s0_REGNUM 17 /* low-order halves of S regs */
- #define s7_REGNUM 10
- #define SP_REGNUM 9 /* A regs */
- #define A1_REGNUM 8
- #define A5_REGNUM 4
- #define AP_REGNUM 3
- #define FP_REGNUM 2 /* Contains address of executing stack frame */
- #define PS_REGNUM 1 /* Contains processor status */
- #define PC_REGNUM 0 /* Contains program counter */
-
- /* convert dbx stab register number (from `r' declaration) to a gdb REGNUM */
-
- #define STAB_REG_TO_REGNUM(value) \
- ((value) < 8 ? S0_REGNUM - (value) : SP_REGNUM - ((value) - 8))
-
- /* Vector register numbers, not handled as ordinary regs.
- They are treated as convenience variables whose values are read
- from the inferior when needed. */
-
- #define V0_REGNUM 0
- #define V7_REGNUM 7
- #define VM_REGNUM 8
- #define VS_REGNUM 9
- #define VL_REGNUM 10
-
- /* Total amount of space needed to store our copies of the machine's
- register state, the array `registers'. */
- #define REGISTER_BYTES (4*10 + 8*8)
-
- /* Index within `registers' of the first byte of the space for
- register N.
- NB: must match structure of struct syscall_context for correct operation */
-
- #define REGISTER_BYTE(N) ((N) < s7_REGNUM ? 4*(N) : \
- (N) < S7_REGNUM ? 44 + 8 * ((N)-s7_REGNUM) : \
- 40 + 8 * ((N)-S7_REGNUM))
-
- /* Number of bytes of storage in the actual machine representation
- for register N. */
-
- #define REGISTER_RAW_SIZE(N) ((N) < S7_REGNUM ? 4 : 8)
-
- /* Number of bytes of storage in the program's representation
- for register N. */
-
- #define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
-
- /* Largest value REGISTER_RAW_SIZE can have. */
-
- #define MAX_REGISTER_RAW_SIZE 8
-
- /* Largest value REGISTER_VIRTUAL_SIZE can have. */
-
- #define MAX_REGISTER_VIRTUAL_SIZE 8
-
- /* Nonzero if register N requires conversion
- from raw format to virtual format. */
-
- #define REGISTER_CONVERTIBLE(N) 0
-
- /* Convert data from raw format for register REGNUM
- to virtual format for register REGNUM. */
-
- #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
- bcopy ((FROM), (TO), REGISTER_RAW_SIZE (REGNUM));
-
- /* Convert data from virtual format for register REGNUM
- to raw format for register REGNUM. */
-
- #define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
- bcopy ((FROM), (TO), REGISTER_RAW_SIZE (REGNUM));
-
- /* Return the GDB type object for the "standard" data type
- of data in register N. */
-
- #define REGISTER_VIRTUAL_TYPE(N) \
- ((N) < S7_REGNUM ? builtin_type_int : builtin_type_long_long)
-
- /* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function. */
-
- #define STORE_STRUCT_RETURN(ADDR, SP) \
- { write_register (A1_REGNUM, (ADDR)); }
-
- /* Extract from an array REGBUF containing the (raw) register state
- a function return value of type TYPE, and copy that, in virtual format,
- into VALBUF. */
-
- #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- bcopy (&((char *) REGBUF) [REGISTER_BYTE (S0_REGNUM) + \
- 8 - TYPE_LENGTH (TYPE)],\
- VALBUF, TYPE_LENGTH (TYPE))
-
- /* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. */
-
- #define STORE_RETURN_VALUE(TYPE,VALBUF) \
- write_register_bytes (REGISTER_BYTE (S0_REGNUM), VALBUF, 8)
-
- /* Extract from an array REGBUF containing the (raw) register state
- the address in which a function should return its structure value,
- as a CORE_ADDR (or an expression that can be used as one). */
-
- #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
- (*(int *) & ((char *) REGBUF) [REGISTER_BYTE (s0_REGNUM)])
-
- /* Compensate for lack of `vprintf' function. */
- #ifndef HAVE_VPRINTF
- #define vprintf(format, ap) _doprnt (format, ap, stdout)
- #endif /* not HAVE_VPRINTF */
-
- /* Define trapped internal variable hooks to read and write
- vector and communication registers. */
-
- #define IS_TRAPPED_INTERNALVAR is_trapped_internalvar
- #define VALUE_OF_TRAPPED_INTERNALVAR value_of_trapped_internalvar
- #define SET_TRAPPED_INTERNALVAR set_trapped_internalvar
-
- extern struct value *value_of_trapped_internalvar ();
-
- /* Hooks to read data from soff exec and core files,
- and to describe the files. */
-
- #define XFER_CORE_FILE
- #define FILES_INFO_HOOK print_maps
-
- /* Hook to call after creating inferior process. */
-
- #define CREATE_INFERIOR_HOOK create_inferior_hook
-
- /* Hook to call to print a typeless integer value, normally printed in decimal.
- For convex, use hex instead if the number looks like an address. */
-
- #define PRINT_TYPELESS_INTEGER decout
-
- /* For the native compiler, variables for a particular lexical context
- are listed after the beginning LBRAC instead of before in the
- executables list of symbols. Using "gcc_compiled." to distinguish
- between GCC and native compiler doesn't work on Convex because the
- linker sorts the symbols to put "gcc_compiled." in the wrong place.
- desc is nonzero for native, zero for gcc. */
- #define VARIABLES_INSIDE_BLOCK(desc) (desc != 0)
-
- /* Pcc occaisionally puts an SO where there should be an SOL. */
- #define PCC_SOL_BROKEN
-
- /* Cannot execute with pc on the stack. */
- #define CANNOT_EXECUTE_STACK
-
- /* Describe the pointer in each stack frame to the previous stack frame
- (its caller). */
-
- /* FRAME_CHAIN takes a frame_info with a frame's nominal address in fi->frame,
- and produces the frame's chain-pointer.
-
- FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
- and produces the nominal address of the caller frame.
-
- However, if FRAME_CHAIN_VALID returns zero,
- it means the given frame is the outermost one and has no caller.
- In that case, FRAME_CHAIN_COMBINE is not used. */
-
- /* (caller fp is saved at 8(fp)) */
-
- #define FRAME_CHAIN(fi) (read_memory_integer ((fi)->frame + 8, 4))
-
- #define FRAME_CHAIN_VALID(chain, thisframe) \
- (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
-
- #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
-
- /* Define other aspects of the stack frame. */
-
- /* A macro that tells us whether the function invocation represented
- by FI does not have a frame on the stack associated with it. If it
- does not, FRAMELESS is set to 1, else 0.
- On convex, check at the return address for `callq' -- if so, frameless,
- otherwise, not. */
-
- #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
- { \
- extern CORE_ADDR text_start, text_end; \
- CORE_ADDR call_addr = SAVED_PC_AFTER_CALL (FI); \
- (FRAMELESS) = (call_addr >= text_start && call_addr < text_end \
- && read_memory_integer (call_addr - 6, 1) == 0x22); \
- }
-
- #define FRAME_SAVED_PC(fi) (read_memory_integer ((fi)->frame, 4))
-
- #define FRAME_ARGS_ADDRESS(fi) (read_memory_integer ((fi)->frame + 12, 4))
-
- #define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
-
- /* Return number of args passed to a frame.
- Can return -1, meaning no way to tell. */
-
- #define FRAME_NUM_ARGS(numargs, fi) \
- { numargs = read_memory_integer (FRAME_ARGS_ADDRESS (fi) - 4, 4); \
- if (numargs < 0 || numargs >= 256) numargs = -1;}
-
- /* Return number of bytes at start of arglist that are not really args. */
-
- #define FRAME_ARGS_SKIP 0
-
- /* Put here the code to store, into a struct frame_saved_regs,
- the addresses of the saved registers of frame described by FRAME_INFO.
- This includes special registers such as pc and fp saved in special
- ways in the stack frame. sp is even more special:
- the address we return for it IS the sp for the next frame. */
-
- /* Normal (short) frames save only PC, FP, (callee's) AP. To reasonably
- handle gcc and pcc register variables, scan the code following the
- call for the instructions the compiler inserts to reload register
- variables from stack slots and record the stack slots as the saved
- locations of those registers. This will occasionally identify some
- random load as a saved register; this is harmless. vc does not
- declare its register allocation actions in the stabs. */
-
- #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
- { register int regnum; \
- register int frame_length = /* 3 short, 2 long, 1 extended, 0 context */\
- (read_memory_integer ((frame_info)->frame + 4, 4) >> 25) & 3; \
- register CORE_ADDR frame_fp = \
- read_memory_integer ((frame_info)->frame + 8, 4); \
- register CORE_ADDR next_addr; \
- bzero (&frame_saved_regs, sizeof frame_saved_regs); \
- (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 0; \
- (frame_saved_regs).regs[PS_REGNUM] = (frame_info)->frame + 4; \
- (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame + 8; \
- (frame_saved_regs).regs[AP_REGNUM] = frame_fp + 12; \
- next_addr = (frame_info)->frame + 12; \
- if (frame_length < 3) \
- for (regnum = A5_REGNUM; regnum < SP_REGNUM; ++regnum) \
- (frame_saved_regs).regs[regnum] = (next_addr += 4); \
- if (frame_length < 2) \
- (frame_saved_regs).regs[SP_REGNUM] = (next_addr += 4); \
- next_addr -= 4; \
- if (frame_length < 3) \
- for (regnum = S7_REGNUM; regnum < S0_REGNUM; ++regnum) \
- (frame_saved_regs).regs[regnum] = (next_addr += 8); \
- if (frame_length < 2) \
- (frame_saved_regs).regs[S0_REGNUM] = (next_addr += 8); \
- else \
- (frame_saved_regs).regs[SP_REGNUM] = next_addr + 8; \
- if (frame_length == 3) { \
- CORE_ADDR pc = read_memory_integer ((frame_info)->frame, 4); \
- int op, ix, disp; \
- op = read_memory_integer (pc, 2); \
- if ((op & 0xffc7) == 0x1480) pc += 4; /* add.w #-,sp */ \
- else if ((op & 0xffc7) == 0x58c0) pc += 2; /* add.w #-,sp */ \
- op = read_memory_integer (pc, 2); \
- if ((op & 0xffc7) == 0x2a06) pc += 4; /* ld.w -,ap */ \
- for (;;) { \
- op = read_memory_integer (pc, 2); \
- ix = (op >> 3) & 7; \
- if ((op & 0xfcc0) == 0x2800) { /* ld.- -,ak */ \
- regnum = SP_REGNUM - (op & 7); \
- disp = read_memory_integer (pc + 2, 2); \
- pc += 4;} \
- else if ((op & 0xfcc0) == 0x2840) { /* ld.- -,ak */ \
- regnum = SP_REGNUM - (op & 7); \
- disp = read_memory_integer (pc + 2, 4); \
- pc += 6;} \
- if ((op & 0xfcc0) == 0x3000) { /* ld.- -,sk */ \
- regnum = S0_REGNUM - (op & 7); \
- disp = read_memory_integer (pc + 2, 2); \
- pc += 4;} \
- else if ((op & 0xfcc0) == 0x3040) { /* ld.- -,sk */ \
- regnum = S0_REGNUM - (op & 7); \
- disp = read_memory_integer (pc + 2, 4); \
- pc += 6;} \
- else if ((op & 0xff00) == 0x7100) { /* br crossjump */ \
- pc += 2 * (char) op; \
- continue;} \
- else if (op == 0x0140) { /* jmp crossjump */ \
- pc = read_memory_integer (pc + 2, 4); \
- continue;} \
- else break; \
- if ((frame_saved_regs).regs[regnum]) \
- break; \
- if (ix == 7) disp += frame_fp; \
- else if (ix == 6) disp += read_memory_integer (frame_fp + 12, 4); \
- else if (ix != 0) break; \
- (frame_saved_regs).regs[regnum] = \
- disp - 8 + (1 << ((op >> 8) & 3)); \
- if (regnum >= S7_REGNUM) \
- (frame_saved_regs).regs[regnum - S0_REGNUM + s0_REGNUM] = \
- disp - 4 + (1 << ((op >> 8) & 3)); \
- } \
- } \
- }
-
- /* Things needed for making the inferior call functions. */
-
- /* Push an empty stack frame, to record the current PC, etc. */
-
- #define PUSH_DUMMY_FRAME \
- { register CORE_ADDR sp = read_register (SP_REGNUM); \
- register int regnum; \
- char buf[8]; \
- long word; \
- for (regnum = S0_REGNUM; regnum >= S7_REGNUM; --regnum) { \
- read_register_bytes (REGISTER_BYTE (regnum), buf, 8); \
- sp = push_bytes (sp, buf, 8);} \
- for (regnum = SP_REGNUM; regnum >= FP_REGNUM; --regnum) { \
- word = read_register (regnum); \
- sp = push_bytes (sp, &word, 4);} \
- word = (read_register (PS_REGNUM) &~ (3<<25)) | (1<<25); \
- sp = push_bytes (sp, &word, 4); \
- word = read_register (PC_REGNUM); \
- sp = push_bytes (sp, &word, 4); \
- write_register (SP_REGNUM, sp); \
- write_register (FP_REGNUM, sp); \
- write_register (AP_REGNUM, sp);}
-
- /* Discard from the stack the innermost frame, restoring all registers. */
-
- #define POP_FRAME do {\
- register CORE_ADDR fp = read_register (FP_REGNUM); \
- register int regnum; \
- register int frame_length = /* 3 short, 2 long, 1 extended, 0 context */ \
- (read_memory_integer (fp + 4, 4) >> 25) & 3; \
- char buf[8]; \
- write_register (PC_REGNUM, read_memory_integer (fp, 4)); \
- write_register (PS_REGNUM, read_memory_integer (fp += 4, 4)); \
- write_register (FP_REGNUM, read_memory_integer (fp += 4, 4)); \
- write_register (AP_REGNUM, read_memory_integer (fp += 4, 4)); \
- if (frame_length < 3) \
- for (regnum = A5_REGNUM; regnum < SP_REGNUM; ++regnum) \
- write_register (regnum, read_memory_integer (fp += 4, 4)); \
- if (frame_length < 2) \
- write_register (SP_REGNUM, read_memory_integer (fp += 4, 4)); \
- fp -= 4; \
- if (frame_length < 3) \
- for (regnum = S7_REGNUM; regnum < S0_REGNUM; ++regnum) { \
- read_memory (fp += 8, buf, 8); \
- write_register_bytes (REGISTER_BYTE (regnum), buf, 8);} \
- if (frame_length < 2) { \
- read_memory (fp += 8, buf, 8); \
- write_register_bytes (REGISTER_BYTE (regnum), buf, 8);} \
- else write_register (SP_REGNUM, fp + 8); \
- flush_cached_frames (); \
- set_current_frame (create_new_frame (read_register (FP_REGNUM), \
- read_pc ())); \
- } while (0)
-
- /* This sequence of words is the instructions
- mov sp,ap
- pshea 69696969
- calls 32323232
- bkpt
- Note this is 16 bytes. */
-
- #define CALL_DUMMY {0x50860d4069696969LL,0x2140323232327d50LL}
-
- #define CALL_DUMMY_START_OFFSET 0
-
- /* Insert the specified number of args and function address
- into a call sequence of the above form stored at DUMMYNAME. */
-
- #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, type) \
- { *(int *)((char *) dummyname + 4) = nargs; \
- *(int *)((char *) dummyname + 10) = fun; }
-
- /* Defs to read soff symbol tables, see dbxread.c */
-
- #define NUMBER_OF_SYMBOLS ((long) opthdr.o_nsyms)
- #define STRING_TABLE_OFFSET ((long) filehdr.h_strptr)
- #define SYMBOL_TABLE_OFFSET ((long) opthdr.o_symptr)
- #define STRING_TABLE_SIZE ((long) filehdr.h_strsiz)
- #define SIZE_OF_TEXT_SEGMENT ((long) txthdr.s_size)
- #define ENTRY_POINT ((long) opthdr.o_entry)
-
- #define READ_STRING_TABLE_SIZE(BUFFER) \
- (BUFFER = STRING_TABLE_SIZE)
-
- #define DECLARE_FILE_HEADERS \
- FILEHDR filehdr; \
- OPTHDR opthdr; \
- SCNHDR txthdr
-
- #define READ_FILE_HEADERS(DESC,NAME) \
- { \
- int n; \
- val = myread (DESC, &filehdr, sizeof filehdr); \
- if (val < 0) \
- perror_with_name (NAME); \
- if (! IS_SOFF_MAGIC (filehdr.h_magic)) \
- error ("%s: not an executable file.", NAME); \
- lseek (DESC, 0L, 0); \
- if (myread (DESC, &filehdr, sizeof filehdr) < 0) \
- perror_with_name (NAME); \
- if (myread (DESC, &opthdr, filehdr.h_opthdr) <= 0) \
- perror_with_name (NAME); \
- for (n = 0; n < filehdr.h_nscns; n++) \
- { \
- if (myread (DESC, &txthdr, sizeof txthdr) < 0) \
- perror_with_name (NAME); \
- if ((txthdr.s_flags & S_TYPMASK) == S_TEXT) \
- break; \
- } \
- }
-
- /* Interface definitions for kernel debugger KDB. */
-
- /* (no kdb) */
-