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250 lines
7.4 KiB
C
250 lines
7.4 KiB
C
/* Definitions to make GDB run on a Sequent Symmetry under dynix 3.0,
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with Weitek 1167 and i387 support.
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Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Symmetry version by Jay Vosburgh (uunet!sequent!fubar) */
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/* This machine doesn't have the siginterrupt call. */
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#define NO_SIGINTERRUPT
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#define HAVE_WAIT_STRUCT
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/* XPT_DEBUG doesn't work yet under Dynix 3.0.12, but UNDEBUG does... */
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/* #define PTRACE_ATTACH XPT_DEBUG
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#define PTRACE_DETACH XPT_UNDEBUG
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#define ATTACH_DETACH */
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#define HOST_BYTE_ORDER LITTLE_ENDIAN
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/* Get rid of any system-imposed stack limit if possible. */
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#define SET_STACK_LIMIT_HUGE
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/* This is the amount to subtract from u.u_ar0
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to get the offset in the core file of the register values. */
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#define KERNEL_U_ADDR (0x80000000 - (UPAGES * NBPG))
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/* The magic numbers below are offsets into u_ar0 in the user struct.
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They live in <machine/reg.h>. Gdb calls this macro with blockend
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holding u.u_ar0 - KERNEL_U_ADDR. Only the registers listed are
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saved in the u area (along with a few others that aren't useful
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here. See <machine/reg.h>). */
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#define REGISTER_U_ADDR(addr, blockend, regno) \
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{ struct user foo; /* needed for finding fpu regs */ \
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switch (regno) { \
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case 0: \
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addr = blockend + EAX * sizeof(int); break; \
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case 1: \
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addr = blockend + EDX * sizeof(int); break; \
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case 2: \
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addr = blockend + ECX * sizeof(int); break; \
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case 3: /* st(0) */ \
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addr = blockend - \
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((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \
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break; \
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case 4: /* st(1) */ \
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addr = blockend - \
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((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \
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break; \
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case 5: \
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addr = blockend + EBX * sizeof(int); break; \
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case 6: \
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addr = blockend + ESI * sizeof(int); break; \
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case 7: \
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addr = blockend + EDI * sizeof(int); break; \
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case 8: /* st(2) */ \
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addr = blockend - \
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((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \
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break; \
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case 9: /* st(3) */ \
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addr = blockend - \
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((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \
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break; \
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case 10: /* st(4) */ \
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addr = blockend - \
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((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \
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break; \
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case 11: /* st(5) */ \
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addr = blockend - \
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((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \
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break; \
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case 12: /* st(6) */ \
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addr = blockend - \
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((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \
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break; \
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case 13: /* st(7) */ \
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addr = blockend - \
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((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \
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break; \
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case 14: \
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addr = blockend + ESP * sizeof(int); break; \
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case 15: \
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addr = blockend + EBP * sizeof(int); break; \
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case 16: \
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addr = blockend + EIP * sizeof(int); break; \
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case 17: \
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addr = blockend + FLAGS * sizeof(int); break; \
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case 18: /* fp1 */ \
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case 19: /* fp2 */ \
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case 20: /* fp3 */ \
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case 21: /* fp4 */ \
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case 22: /* fp5 */ \
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case 23: /* fp6 */ \
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case 24: /* fp7 */ \
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case 25: /* fp8 */ \
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case 26: /* fp9 */ \
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case 27: /* fp10 */ \
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case 28: /* fp11 */ \
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case 29: /* fp12 */ \
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case 30: /* fp13 */ \
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case 31: /* fp14 */ \
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case 32: /* fp15 */ \
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case 33: /* fp16 */ \
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case 34: /* fp17 */ \
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case 35: /* fp18 */ \
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case 36: /* fp19 */ \
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case 37: /* fp20 */ \
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case 38: /* fp21 */ \
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case 39: /* fp22 */ \
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case 40: /* fp23 */ \
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case 41: /* fp24 */ \
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case 42: /* fp25 */ \
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case 43: /* fp26 */ \
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case 44: /* fp27 */ \
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case 45: /* fp28 */ \
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case 46: /* fp29 */ \
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case 47: /* fp30 */ \
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case 48: /* fp31 */ \
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addr = blockend - \
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((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \
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} \
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}
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/* Compensate for lack of `vprintf' function. */
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#define MISSING_VPRINTF
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/* Override copies of {fetch,store}_inferior_registers in infptrace.c. */
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#define FETCH_INFERIOR_REGISTERS
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/* We must fetch all the regs before storing, since we store all at once. */
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#define CHILD_PREPARE_TO_STORE() read_register_bytes (0, NULL, REGISTER_BYTES)
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/* Interface definitions for kernel debugger KDB. */
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/* This doesn't work... */
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/* Map machine fault codes into signal numbers.
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First subtract 0, divide by 4, then index in a table.
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Faults for which the entry in this table is 0
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are not handled by KDB; the program's own trap handler
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gets to handle then. */
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#define FAULT_CODE_ORIGIN 0
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#define FAULT_CODE_UNITS 4
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#define FAULT_TABLE \
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{ 0, SIGKILL, SIGSEGV, 0, 0, 0, 0, 0, \
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0, 0, SIGTRAP, SIGTRAP, 0, 0, 0, 0, \
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0, 0, 0, 0, 0, 0, 0, 0}
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/* Start running with a stack stretching from BEG to END.
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BEG and END should be symbols meaningful to the assembler.
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This is used only for kdb. */
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#define INIT_STACK(beg, end) \
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{ asm (".globl end"); \
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asm ("movl $ end, %esp"); \
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asm ("movl %ebp, $0"); }
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/* Push the frame pointer register on the stack. */
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#define PUSH_FRAME_PTR \
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asm ("pushl %ebp");
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/* Copy the top-of-stack to the frame pointer register. */
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#define POP_FRAME_PTR \
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asm ("movl (%esp), %ebp");
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/* After KDB is entered by a fault, push all registers
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that GDB thinks about (all NUM_REGS of them),
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so that they appear in order of ascending GDB register number.
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The fault code will be on the stack beyond the last register. */
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#define PUSH_REGISTERS \
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{ asm("pushad"); }
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/*
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{ asm("pushl %eax"); \
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asm("pushl %edx"); \
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asm("pushl %ecx"); \
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asm("pushl %st(0)"); \
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asm("pushl %st(1)"); \
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asm("pushl %ebx"); \
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asm("pushl %esi"); \
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asm("pushl %edi"); \
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asm("pushl %st(2)"); \
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asm("pushl %st(3)"); \
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asm("pushl %st(4)"); \
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asm("pushl %st(5)"); \
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asm("pushl %st(6)"); \
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asm("pushl %st(7)"); \
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asm("pushl %esp"); \
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asm("pushl %ebp"); \
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asm("pushl %eip"); \
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asm("pushl %eflags"); \
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asm("pushl %fp1"); \
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asm("pushl %fp2"); \
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asm("pushl %fp3"); \
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asm("pushl %fp4"); \
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asm("pushl %fp5"); \
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asm("pushl %fp6"); \
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asm("pushl %fp7"); \
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asm("pushl %fp8"); \
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asm("pushl %fp9"); \
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asm("pushl %fp10"); \
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asm("pushl %fp11"); \
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asm("pushl %fp12"); \
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asm("pushl %fp13"); \
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asm("pushl %fp14"); \
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asm("pushl %fp15"); \
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asm("pushl %fp16"); \
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asm("pushl %fp17"); \
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asm("pushl %fp18"); \
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asm("pushl %fp19"); \
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asm("pushl %fp20"); \
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asm("pushl %fp21"); \
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asm("pushl %fp22"); \
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asm("pushl %fp23"); \
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asm("pushl %fp24"); \
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asm("pushl %fp25"); \
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asm("pushl %fp26"); \
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asm("pushl %fp27"); \
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asm("pushl %fp28"); \
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asm("pushl %fp29"); \
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asm("pushl %fp30"); \
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asm("pushl %fp31"); \
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}
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*/
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/* Assuming the registers (including processor status) have been
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pushed on the stack in order of ascending GDB register number,
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restore them and return to the address in the saved PC register. */
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#define POP_REGISTERS \
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{ asm ("popad"); }
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