Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 321 insertions, 0 deletions

diff --git a/gdb/config/i386/tm-symmetry.h b/gdb/config/i386/tm-symmetry.h
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+++ b/gdb/config/i386/tm-symmetry.h
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+/* 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 */
+