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- /* Definitions to make GDB hosted on a tahoe running 4.3-Reno
- Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
- Contributed by the State University of New York at Buffalo, by the
- Distributed Computer Systems Lab, Department of Computer Science, 1991.
-
- This file is part of GDB.
-
- This program 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 2 of the License, or
- (at your option) any later version.
-
- This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Make sure the system include files define BIG_ENDIAN, UINT_MAX, const,
- etc, rather than GDB's files. */
- #include <stdio.h>
- #include <sys/param.h>
-
- /* Host is big-endian */
-
- #define HOST_BYTE_ORDER BIG_ENDIAN
-
- /* Get rid of any system-imposed stack limit if possible. */
-
- #define SET_STACK_LIMIT_HUGE
-
- #define REGISTER_U_ADDR(addr, blockend, regno) \
- { addr = blockend - 100 + regno * 4; \
- if (regno == PC_REGNUM) addr = blockend - 8; \
- if (regno == PS_REGNUM) addr = blockend - 4; \
- if (regno == FP_REGNUM) addr = blockend - 40; \
- if (regno == SP_REGNUM) addr = blockend - 36; \
- if (regno == AL_REGNUM) addr = blockend - 20; \
- if (regno == AH_REGNUM) addr = blockend - 24;}
-
- /* Interface definitions for kernel debugger KDB. */
-
- /* Map machine fault codes into signal numbers.
- First subtract 0, divide by 4, then index in a table.
- Faults for which the entry in this table is 0
- are not handled by KDB; the program's own trap handler
- gets to handle then. */
-
- #define FAULT_CODE_ORIGIN 0
- #define FAULT_CODE_UNITS 4
- #define FAULT_TABLE \
- { 0, SIGKILL, SIGSEGV, 0, 0, 0, 0, 0, \
- 0, 0, SIGTRAP, SIGTRAP, 0, 0, 0, 0, \
- 0, 0, 0, 0, 0, 0, 0, 0}
-
- /* Start running with a stack stretching from BEG to END.
- BEG and END should be symbols meaningful to the assembler.
- This is used only for kdb. */
-
- #define INIT_STACK(beg, end) \
- { asm (".globl end"); \
- asm ("movl $ end, sp"); \
- asm ("clrl fp"); }
-
- /* Push the frame pointer register on the stack. */
-
- #define PUSH_FRAME_PTR \
- asm ("pushl fp");
-
- /* Copy the top-of-stack to the frame pointer register. */
-
- #define POP_FRAME_PTR \
- asm ("movl (sp), fp");
-
- /* After KDB is entered by a fault, push all registers
- that GDB thinks about (all NUM_REGS of them),
- so that they appear in order of ascending GDB register number.
- The fault code will be on the stack beyond the last register. */
-
- #define PUSH_REGISTERS \
- { asm ("pushl 8(sp)"); \
- asm ("pushl 8(sp)"); \
- asm ("pushal 0x41(sp)"); \
- asm ("pushl r0" ); \
- asm ("pushl r1" ); \
- asm ("pushl r2" ); \
- asm ("pushl r3" ); \
- asm ("pushl r4" ); \
- asm ("pushl r5" ); \
- asm ("pushl r6" ); \
- asm ("pushl r7" ); \
- asm ("pushl r8" ); \
- asm ("pushl r9" ); \
- asm ("pushl r10" ); \
- asm ("pushl r11" ); \
- asm ("pushl r12" ); \
- asm ("pushl fp" ); \
- asm ("pushl sp" ); \
- asm ("pushl pc" ); \
- asm ("pushl ps" ); \
- asm ("pushl aclo" ); \
- asm ("pushl achi" ); \
- }
-
- /* Assuming the registers (including processor status) have been
- pushed on the stack in order of ascending GDB register number,
- restore them and return to the address in the saved PC register. */
-
- #define POP_REGISTERS \
- { \
- asm ("movl (sp)+, achi"); \
- asm ("movl (sp)+, aclo"); \
- asm ("movl (sp)+, ps"); \
- asm ("movl (sp)+, pc"); \
- asm ("movl (sp)+, sp"); \
- asm ("movl (sp)+, fp"); \
- asm ("movl (sp)+, r12"); \
- asm ("movl (sp)+, r11"); \
- asm ("movl (sp)+, r10"); \
- asm ("movl (sp)+, r9"); \
- asm ("movl (sp)+, r8"); \
- asm ("movl (sp)+, r7"); \
- asm ("movl (sp)+, r6"); \
- asm ("movl (sp)+, r5"); \
- asm ("movl (sp)+, r4"); \
- asm ("movl (sp)+, r3"); \
- asm ("movl (sp)+, r2"); \
- asm ("movl (sp)+, r1"); \
- asm ("movl (sp)+, r0"); \
- asm ("subl2 $8,(sp)"); \
- asm ("movl (sp),sp"); \
- asm ("rei"); }
-