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Diffstat (limited to 'gdb/config/i386/tm-symmetry.h')
| -rw-r--r-- | gdb/config/i386/tm-symmetry.h | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/gdb/config/i386/tm-symmetry.h b/gdb/config/i386/tm-symmetry.h new file mode 100644 index 00000000000..11931d41724 --- /dev/null +++ b/gdb/config/i386/tm-symmetry.h @@ -0,0 +1,321 @@ +/* Target machine definitions for GDB on a Sequent Symmetry under dynix 3.0, + with Weitek 1167 and i387 support. + Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994 + Free Software Foundation, Inc. + Symmetry version by Jay Vosburgh (fubar@sequent.com). + +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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifndef TM_SYMMETRY_H +#define TM_SYMMETRY_H 1 + +/* I don't know if this will work for cross-debugging, even if you do get + a copy of the right include file. */ +#include <machine/reg.h> + +#include "i386/tm-i386v.h" + +#undef START_INFERIOR_TRAPS_EXPECTED +#define START_INFERIOR_TRAPS_EXPECTED 2 + +/* Amount PC must be decremented by after a breakpoint. This is often the + number of bytes in BREAKPOINT but not always (such as now). */ + +#undef DECR_PC_AFTER_BREAK +#define DECR_PC_AFTER_BREAK 0 + +#if 0 +/* --- this code can't be used unless we know we are running native, + since it uses host specific ptrace calls. */ +/* code for 80387 fpu. Functions are from i386-dep.c, copied into + * symm-dep.c. + */ +#define FLOAT_INFO { i386_float_info(); } +#endif + +/* Number of machine registers */ + +#undef NUM_REGS +#define NUM_REGS 49 + +/* Initializer for an array of names of registers. + There should be NUM_REGS strings in this initializer. */ + +/* Initializer for an array of names of registers. There should be at least + NUM_REGS strings in this initializer. Any excess ones are simply ignored. + Symmetry registers are in this weird order to match the register numbers + in the symbol table entries. If you change the order, things will probably + break mysteriously for no apparent reason. Also note that the st(0)... + st(7) 387 registers are represented as st0...st7. */ + +#undef REGISTER_NAMES +#define REGISTER_NAMES { "eax", "edx", "ecx", "st0", "st1", \ + "ebx", "esi", "edi", "st2", "st3", \ + "st4", "st5", "st6", "st7", "esp", \ + "ebp", "eip", "eflags","fp1", "fp2", \ + "fp3", "fp4", "fp5", "fp6", "fp7", \ + "fp8", "fp9", "fp10", "fp11", "fp12", \ + "fp13", "fp14", "fp15", "fp16", "fp17", \ + "fp18", "fp19", "fp20", "fp21", "fp22", \ + "fp23", "fp24", "fp25", "fp26", "fp27", \ + "fp28", "fp29", "fp30", "fp31" } + +/* 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 EAX_REGNUM 0 +#define EDX_REGNUM 1 +#define ECX_REGNUM 2 +#define ST0_REGNUM 3 +#define ST1_REGNUM 4 +#define EBX_REGNUM 5 +#define ESI_REGNUM 6 +#define EDI_REGNUM 7 +#define ST2_REGNUM 8 +#define ST3_REGNUM 9 + +#define ST4_REGNUM 10 +#define ST5_REGNUM 11 +#define ST6_REGNUM 12 +#define ST7_REGNUM 13 + +#define FP1_REGNUM 18 /* first 1167 register */ +/* Get %fp2 - %fp31 by addition, since they are contiguous */ + +#undef SP_REGNUM +#define SP_REGNUM 14 /* (usp) Contains address of top of stack */ +#define ESP_REGNUM 14 +#undef FP_REGNUM +#define FP_REGNUM 15 /* (ebp) Contains address of executing stack frame */ +#define EBP_REGNUM 15 +#undef PC_REGNUM +#define PC_REGNUM 16 /* (eip) Contains program counter */ +#define EIP_REGNUM 16 +#undef PS_REGNUM +#define PS_REGNUM 17 /* (ps) Contains processor status */ +#define EFLAGS_REGNUM 17 + +/* + * Following macro translates i386 opcode register numbers to Symmetry + * register numbers. This is used by i386_frame_find_saved_regs. + * + * %eax %ecx %edx %ebx %esp %ebp %esi %edi + * i386 0 1 2 3 4 5 6 7 + * Symmetry 0 2 1 5 14 15 6 7 + * + */ +#define I386_REGNO_TO_SYMMETRY(n) \ +((n)==0?0 :(n)==1?2 :(n)==2?1 :(n)==3?5 :(n)==4?14 :(n)==5?15 :(n)) + +/* The magic numbers below are offsets into u_ar0 in the user struct. + * They live in <machine/reg.h>. Gdb calls this macro with blockend + * holding u.u_ar0 - KERNEL_U_ADDR. Only the registers listed are + * saved in the u area (along with a few others that aren't useful + * here. See <machine/reg.h>). + */ + +#define REGISTER_U_ADDR(addr, blockend, regno) \ +{ struct user foo; /* needed for finding fpu regs */ \ +switch (regno) { \ + case 0: \ + addr = blockend + EAX * sizeof(int); break; \ + case 1: \ + addr = blockend + EDX * sizeof(int); break; \ + case 2: \ + addr = blockend + ECX * sizeof(int); break; \ + case 3: /* st(0) */ \ + addr = ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \ + break; \ + case 4: /* st(1) */ \ + addr = ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \ + break; \ + case 5: \ + addr = blockend + EBX * sizeof(int); break; \ + case 6: \ + addr = blockend + ESI * sizeof(int); break; \ + case 7: \ + addr = blockend + EDI * sizeof(int); break; \ + case 8: /* st(2) */ \ + addr = ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \ + break; \ + case 9: /* st(3) */ \ + addr = ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \ + break; \ + case 10: /* st(4) */ \ + addr = ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \ + break; \ + case 11: /* st(5) */ \ + addr = ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \ + break; \ + case 12: /* st(6) */ \ + addr = ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \ + break; \ + case 13: /* st(7) */ \ + addr = ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \ + break; \ + case 14: \ + addr = blockend + ESP * sizeof(int); break; \ + case 15: \ + addr = blockend + EBP * sizeof(int); break; \ + case 16: \ + addr = blockend + EIP * sizeof(int); break; \ + case 17: \ + addr = blockend + FLAGS * sizeof(int); break; \ + case 18: /* fp1 */ \ + case 19: /* fp2 */ \ + case 20: /* fp3 */ \ + case 21: /* fp4 */ \ + case 22: /* fp5 */ \ + case 23: /* fp6 */ \ + case 24: /* fp7 */ \ + case 25: /* fp8 */ \ + case 26: /* fp9 */ \ + case 27: /* fp10 */ \ + case 28: /* fp11 */ \ + case 29: /* fp12 */ \ + case 30: /* fp13 */ \ + case 31: /* fp14 */ \ + case 32: /* fp15 */ \ + case 33: /* fp16 */ \ + case 34: /* fp17 */ \ + case 35: /* fp18 */ \ + case 36: /* fp19 */ \ + case 37: /* fp20 */ \ + case 38: /* fp21 */ \ + case 39: /* fp22 */ \ + case 40: /* fp23 */ \ + case 41: /* fp24 */ \ + case 42: /* fp25 */ \ + case 43: /* fp26 */ \ + case 44: /* fp27 */ \ + case 45: /* fp28 */ \ + case 46: /* fp29 */ \ + case 47: /* fp30 */ \ + case 48: /* fp31 */ \ + addr = ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \ + } \ +} + +/* Total amount of space needed to store our copies of the machine's + register state, the array `registers'. 10 i*86 registers, 8 i387 + registers, and 31 Weitek 1167 registers */ + +#undef REGISTER_BYTES +#define REGISTER_BYTES ((10 * 4) + (8 * 10) + (31 * 4)) + +/* Index within `registers' of the first byte of the space for + register N. */ + +#undef REGISTER_BYTE +#define REGISTER_BYTE(N) \ +(((N) < 3) ? ((N) * 4) : \ +((N) < 5) ? ((((N) - 2) * 10) + 2) : \ +((N) < 8) ? ((((N) - 5) * 4) + 32) : \ +((N) < 14) ? ((((N) - 8) * 10) + 44) : \ + ((((N) - 14) * 4) + 104)) + +/* Number of bytes of storage in the actual machine representation + * for register N. All registers are 4 bytes, except 387 st(0) - st(7), + * which are 80 bits each. + */ + +#undef REGISTER_RAW_SIZE +#define REGISTER_RAW_SIZE(N) \ +(((N) < 3) ? 4 : \ +((N) < 5) ? 10 : \ +((N) < 8) ? 4 : \ +((N) < 14) ? 10 : \ + 4) + +/* Nonzero if register N requires conversion + from raw format to virtual format. */ + +#undef REGISTER_CONVERTIBLE +#define REGISTER_CONVERTIBLE(N) \ +(((N) < 3) ? 0 : \ +((N) < 5) ? 1 : \ +((N) < 8) ? 0 : \ +((N) < 14) ? 1 : \ + 0) + +#include "floatformat.h" + +/* Convert data from raw format for register REGNUM in buffer FROM + to virtual format with type TYPE in buffer TO. */ + +#undef REGISTER_CONVERT_TO_VIRTUAL +#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ +{ \ + double val; \ + floatformat_to_double (&floatformat_i387_ext, (FROM), &val); \ + store_floating ((TO), TYPE_LENGTH (TYPE), val); \ +} + +/* Convert data from virtual format with type TYPE in buffer FROM + to raw format for register REGNUM in buffer TO. */ + +#undef REGISTER_CONVERT_TO_RAW +#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ +{ \ + double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \ + floatformat_from_double (&floatformat_i387_ext, &val, (TO)); \ +} + +/* Return the GDB type object for the "standard" data type + of data in register N. */ + +#undef REGISTER_VIRTUAL_TYPE +#define REGISTER_VIRTUAL_TYPE(N) \ +((N < 3) ? builtin_type_int : \ +(N < 5) ? builtin_type_double : \ +(N < 8) ? builtin_type_int : \ +(N < 14) ? builtin_type_double : \ + builtin_type_int) + +/* Store the address of the place in which to copy the structure the + subroutine will return. This is called from call_function. + Native cc passes the address in eax, gcc (up to version 2.5.8) + passes it on the stack. gcc should be fixed in future versions to + adopt native cc conventions. */ + +#undef STORE_STRUCT_RETURN +#define STORE_STRUCT_RETURN(ADDR, SP) 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) + +/* The following redefines make backtracing through sigtramp work. + They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp + from the sigcontext structure which is pushed by the kernel on the + user stack, along with a pointer to it. */ + +#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigcode", name)) + +/* Offset to saved PC in sigcontext, from <signal.h>. */ +#define SIGCONTEXT_PC_OFFSET 16 + +#endif /* ifndef TM_SYMMETRY_H */ + |