mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
82a2edfbcf
cp-valprint.c, eval.c, expprint.c, findvar.c, language.c, objfiles.h, infcmd.c, printcmd.c, stack.c, typeprint.c, valarith.c, valops.c, valprint.c, value.h, values.c: Replace value with value_ptr. This is for the ptx compiler. * objfiles.h, target.h: Don't declare a "sec_ptr" field using a "sec_ptr" typedef. * symm-nat.c: Add a bunch of stuff for symmetry's ptrace stuff. #if 0 i386_float_info. * symm-tdep.c (round): Remove. Also remove sgttyb. * symm-tdep.c: Remove lots of stuff which duplicates stuff from i386-tdep.c. Remove register_addr and ptx_coff_regno_to_gdb. * i386-tdep.c (i386_frame_find_saved_regs): Put in I386_REGNO_TO_SYMMETRY check in case it is needed for Dynix someday. * config/i386/nm-symmetry.h: Change KERNEL_U_ADDR. Move stuff from PTRACE_READ_REGS, PTRACE_WRITE_REGS macros to symm-nat.c. Define CHILD_WAIT and declare child_wait(). * config/i386/tm-symmetry.h: Remove call function stuff; stuff in tm-i386v.h is apparently OK. * config/i386/xm-symmetry.h [_SEQUENT_]: Define HAVE_TERMIOS not HAVE_TERMIO. Define MEM_FNS_DECLARED, NEED_POSIX_SETPGID, and USE_O_NOCTTY.
454 lines
14 KiB
C
454 lines
14 KiB
C
/* Target machine definitions for GDB on a Sequent Symmetry under dynix 3.0,
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with Weitek 1167 and i387 support.
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Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
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Symmetry version by Jay Vosburgh (fubar@sequent.com).
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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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/* I don't know if this will work for cross-debugging, even if you do get
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a copy of the right include file. */
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#ifdef _SEQUENT_
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/* ptx */
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#include <sys/reg.h>
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#else
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/* dynix */
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#include <machine/reg.h>
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#endif
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#ifdef _SEQUENT_
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/* ptx, not dynix */
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#define SDB_REG_TO_REGNUM(value) ptx_coff_regno_to_gdb(value)
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extern int ptx_coff_regno_to_gdb();
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#endif /* _SEQUENT_ */
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#define START_INFERIOR_TRAPS_EXPECTED 2
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/* Amount PC must be decremented by after a breakpoint.
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This is often the number of bytes in BREAKPOINT
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but not always. */
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#define DECR_PC_AFTER_BREAK 0
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#include "i386/tm-i386v.h"
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/* Nonzero if instruction at PC is a return instruction. */
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/* For Symmetry, this is really the 'leave' instruction, which */
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/* is right before the ret */
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#undef ABOUT_TO_RETURN
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#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 1) == 0xc9)
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#if 0
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--- this code can't be used unless we know we are running native,
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since it uses host specific ptrace calls.
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/* code for 80387 fpu. Functions are from i386-dep.c, copied into
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* symm-dep.c.
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*/
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#define FLOAT_INFO { i386_float_info(); }
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#endif
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/* Number of machine registers */
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#undef NUM_REGS
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#define NUM_REGS 49
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/* Initializer for an array of names of registers.
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There should be NUM_REGS strings in this initializer. */
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/* Symmetry registers are in this weird order to match the register
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numbers in the symbol table entries. If you change the order,
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things will probably break mysteriously for no apparent reason.
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Also note that the st(0)...st(7) 387 registers are represented as
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st0...st7. */
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#undef REGISTER_NAMES
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#define REGISTER_NAMES { "eax", "edx", "ecx", "st0", "st1", \
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"ebx", "esi", "edi", "st2", "st3", \
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"st4", "st5", "st6", "st7", "esp", \
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"ebp", "eip", "eflags", "fp1", "fp2", \
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"fp3", "fp4", "fp5", "fp6", "fp7", \
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"fp8", "fp9", "fp10", "fp11", "fp12", \
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"fp13", "fp14", "fp15", "fp16", "fp17", \
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"fp18", "fp19", "fp20", "fp21", "fp22", \
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"fp23", "fp24", "fp25", "fp26", "fp27", \
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"fp28", "fp29", "fp30", "fp31" }
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/* Register numbers of various important registers.
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Note that some of these values are "real" register numbers,
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and correspond to the general registers of the machine,
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and some are "phony" register numbers which are too large
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to be actual register numbers as far as the user is concerned
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but do serve to get the desired values when passed to read_register. */
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#define EAX_REGNUM 0
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#define EDX_REGNUM 1
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#define ECX_REGNUM 2
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#define ST0_REGNUM 3
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#define ST1_REGNUM 4
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#define EBX_REGNUM 5
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#define ESI_REGNUM 6
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#define EDI_REGNUM 7
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#define ST2_REGNUM 8
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#define ST3_REGNUM 9
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#define ST4_REGNUM 10
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#define ST5_REGNUM 11
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#define ST6_REGNUM 12
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#define ST7_REGNUM 13
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#define FP1_REGNUM 18 /* first 1167 register */
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/* Get %fp2 - %fp31 by addition, since they are contiguous */
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#undef SP_REGNUM
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#define SP_REGNUM 14 /* esp--Contains address of top of stack */
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#define ESP_REGNUM 14
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#undef FP_REGNUM
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#define FP_REGNUM 15 /* ebp--Contains address of executing stack frame */
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#define EBP_REGNUM 15
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#undef PC_REGNUM
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#define PC_REGNUM 16 /* eip--Contains program counter */
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#define EIP_REGNUM 16
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#undef PS_REGNUM
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#define PS_REGNUM 17 /* eflags--Contains processor status */
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#define EFLAGS_REGNUM 17
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#ifndef _SEQUENT_
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/* dynix, not ptx. For ptx, see register_addr in symm-tdep.c */
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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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*/
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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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#endif /* not _SEQUENT_ */
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#ifdef _SEQUENT_
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/* ptx. For Dynix, see above */
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/*
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* For ptx, this is a little bit bizarre, since the register block
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* is below the u area in memory. This means that blockend here ends
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* up being negative (for the call from coredep.c) since the value in
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* u.u_ar0 will be less than KERNEL_U_ADDR (and coredep.c passes us
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* u.u_ar0 - KERNEL_U_ADDR in blockend). Since we also define
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* FETCH_INFERIOR_REGISTERS (and supply our own functions for that),
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* the core file case will be the only use of this function.
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*/
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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 + (NBPG * UPAGES) - sizeof(struct user) + (EAX * sizeof(int)); break; \
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case 1: \
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addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EDX * sizeof(int)); break; \
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case 2: \
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addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (ECX * sizeof(int)); break; \
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case 3: /* st(0) */ \
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addr = blockend - KERNEL_U_ADDR + \
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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 - KERNEL_U_ADDR + \
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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 + (NBPG * UPAGES) - sizeof(struct user) + (EBX * sizeof(int)); break; \
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case 6: \
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addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (ESI * sizeof(int)); break; \
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case 7: \
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addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EDI * sizeof(int)); break; \
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case 8: /* st(2) */ \
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addr = blockend - KERNEL_U_ADDR + \
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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 - KERNEL_U_ADDR + \
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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 - KERNEL_U_ADDR + \
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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 - KERNEL_U_ADDR + \
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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 - KERNEL_U_ADDR + \
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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 - KERNEL_U_ADDR + \
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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 + (NBPG * UPAGES) - sizeof(struct user) + (ESP * sizeof(int)); break; \
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case 15: \
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addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EBP * sizeof(int)); break; \
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case 16: \
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addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EIP * sizeof(int)); break; \
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case 17: \
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addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (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 - KERNEL_U_ADDR + \
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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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#endif /* _SEQUENT_ */
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#undef FRAME_CHAIN
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#define FRAME_CHAIN(thisframe) ((thisframe)->pc == 0 ? \
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0 : read_memory_integer((thisframe)->frame, 4))
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#define FRAME_CHAIN_VALID(chain, thisframe) \
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((chain) != 0)
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#undef FRAME_ARGS_SKIP
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#define FRAME_ARGS_SKIP 0
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/* Total amount of space needed to store our copies of the machine's
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register state, the array `registers'. */
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/* 10 i386 registers, 8 i387 registers, and 31 Weitek 1167 registers */
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#undef REGISTER_BYTES
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#define REGISTER_BYTES ((10 * 4) + (8 * 10) + (31 * 4))
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/* Index within `registers' of the first byte of the space for
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register N. */
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#undef REGISTER_BYTE
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#define REGISTER_BYTE(N) \
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((N < 3) ? (N * 4) : \
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(N < 5) ? (((N - 2) * 10) + 2) : \
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(N < 8) ? (((N - 5) * 4) + 32) : \
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(N < 14) ? (((N - 8) * 10) + 44) : \
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(((N - 14) * 4) + 104))
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/* Number of bytes of storage in the actual machine representation
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* for register N. All registers are 4 bytes, except 387 st(0) - st(7),
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* which are 80 bits each.
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*/
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#undef REGISTER_RAW_SIZE
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#define REGISTER_RAW_SIZE(N) \
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((N < 3) ? 4 : \
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(N < 5) ? 10 : \
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(N < 8) ? 4 : \
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(N < 14) ? 10 : \
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4)
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/* Largest value REGISTER_RAW_SIZE can have. */
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#undef MAX_REGISTER_RAW_SIZE
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#define MAX_REGISTER_RAW_SIZE 10
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/* Nonzero if register N requires conversion
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from raw format to virtual format. */
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#undef REGISTER_CONVERTIBLE
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#define REGISTER_CONVERTIBLE(N) \
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((N < 3) ? 0 : \
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(N < 5) ? 1 : \
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(N < 8) ? 0 : \
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(N < 14) ? 1 : \
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0)
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/* Convert data from raw format for register REGNUM in buffer FROM
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to virtual format with type TYPE in buffer TO. */
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#undef REGISTER_CONVERT_TO_VIRTUAL
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#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
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{ \
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double val; \
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i387_to_double ((FROM), (char *)&val); \
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store_floating ((TO), TYPE_LENGTH (TYPE), val); \
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}
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extern void
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i387_to_double PARAMS ((char *, char *));
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/* Convert data from virtual format with type TYPE in buffer FROM
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to raw format for register REGNUM in buffer TO. */
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#undef REGISTER_CONVERT_TO_RAW
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#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
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{ \
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double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
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double_to_i387((char *)&val, (TO))) \
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}
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extern void
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double_to_i387 PARAMS ((char *, char *));
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/* Return the GDB type object for the "standard" data type
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of data in register N. */
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#undef REGISTER_VIRTUAL_TYPE
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#define REGISTER_VIRTUAL_TYPE(N) \
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((N < 3) ? builtin_type_int : \
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(N < 5) ? builtin_type_double : \
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(N < 8) ? builtin_type_int : \
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(N < 14) ? builtin_type_double : \
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builtin_type_int)
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/* from m-i386.h (now known as tm-i386v.h). */
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/* Store the address of the place in which to copy the structure the
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subroutine will return. This is called from call_function. FIXME:
|
||
Why is it writing register 0? Is the symmetry different from tm-i386v.h,
|
||
or is it some sort of artifact? FIXME. */
|
||
|
||
#undef STORE_STRUCT_RETURN
|
||
#define STORE_STRUCT_RETURN(ADDR, SP) \
|
||
{ (SP) -= sizeof (ADDR); \
|
||
write_memory ((SP), &(ADDR), sizeof (ADDR)); \
|
||
write_register(0, (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. */
|
||
|
||
#undef EXTRACT_RETURN_VALUE
|
||
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
|
||
symmetry_extract_return_value(TYPE, REGBUF, VALBUF)
|
||
|
||
|
||
extern void
|
||
print_387_control_word PARAMS ((unsigned int));
|
||
|
||
extern void
|
||
print_387_status_word PARAMS ((unsigned int));
|