/* 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 Free Software Foundation, Inc.
+ 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.
/* I don't know if this will work for cross-debugging, even if you do get
a copy of the right include file. */
-#ifdef _SEQUENT_
-/* ptx */
-#include <sys/reg.h>
-#else
-/* dynix */
#include <machine/reg.h>
-#endif
-
-#ifdef _SEQUENT_
-/* ptx, not dynix */
-#define SDB_REG_TO_REGNUM(value) ptx_coff_regno_to_gdb(value)
-extern int ptx_coff_regno_to_gdb();
-
-#endif /* _SEQUENT_ */
#define START_INFERIOR_TRAPS_EXPECTED 2
#include "i386/tm-i386v.h"
-/* Nonzero if instruction at PC is a return instruction. */
-/* For Symmetry, this is really the 'leave' instruction, which */
-/* is right before the ret */
-
-#undef ABOUT_TO_RETURN
-#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 1) == 0xc9)
-
#if 0
/* --- this code can't be used unless we know we are running native,
since it uses host specific ptrace calls. */
#define PS_REGNUM 17 /* eflags--Contains processor status */
#define EFLAGS_REGNUM 17
-#ifndef _SEQUENT_
-/* dynix, not ptx. For ptx, see register_addr in symm-tdep.c */
+/*
+ * 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
case 2: \
addr = blockend + ECX * sizeof(int); break; \
case 3: /* st(0) */ \
- addr = blockend - \
- ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \
+ addr = ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \
break; \
case 4: /* st(1) */ \
- addr = blockend - \
- ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \
+ addr = ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \
break; \
case 5: \
addr = blockend + EBX * sizeof(int); break; \
case 7: \
addr = blockend + EDI * sizeof(int); break; \
case 8: /* st(2) */ \
- addr = blockend - \
- ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \
+ addr = ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \
break; \
case 9: /* st(3) */ \
- addr = blockend - \
- ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \
+ addr = ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \
break; \
case 10: /* st(4) */ \
- addr = blockend - \
- ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \
+ addr = ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \
break; \
case 11: /* st(5) */ \
- addr = blockend - \
- ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \
+ addr = ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \
break; \
case 12: /* st(6) */ \
- addr = blockend - \
- ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \
+ addr = ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \
break; \
case 13: /* st(7) */ \
- addr = blockend - \
- ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \
+ addr = ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \
break; \
case 14: \
addr = blockend + ESP * sizeof(int); break; \
case 46: /* fp29 */ \
case 47: /* fp30 */ \
case 48: /* fp31 */ \
- addr = blockend - \
- ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \
- } \
-}
-#endif /* not _SEQUENT_ */
-
-#ifdef _SEQUENT_
-/* ptx. For Dynix, see above */
-
-/*
- * For ptx, this is a little bit bizarre, since the register block
- * is below the u area in memory. This means that blockend here ends
- * up being negative (for the call from coredep.c) since the value in
- * u.u_ar0 will be less than KERNEL_U_ADDR (and coredep.c passes us
- * u.u_ar0 - KERNEL_U_ADDR in blockend). Since we also define
- * FETCH_INFERIOR_REGISTERS (and supply our own functions for that),
- * the core file case will be the only use of this function.
- */
-
-#define REGISTER_U_ADDR(addr, blockend, regno) \
-{ struct user foo; /* needed for finding fpu regs */ \
-switch (regno) { \
- case 0: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EAX * sizeof(int)); break; \
- case 1: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EDX * sizeof(int)); break; \
- case 2: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (ECX * sizeof(int)); break; \
- case 3: /* st(0) */ \
- addr = blockend - KERNEL_U_ADDR + \
- ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \
- break; \
- case 4: /* st(1) */ \
- addr = blockend - KERNEL_U_ADDR + \
- ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \
- break; \
- case 5: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EBX * sizeof(int)); break; \
- case 6: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (ESI * sizeof(int)); break; \
- case 7: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EDI * sizeof(int)); break; \
- case 8: /* st(2) */ \
- addr = blockend - KERNEL_U_ADDR + \
- ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \
- break; \
- case 9: /* st(3) */ \
- addr = blockend - KERNEL_U_ADDR + \
- ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \
- break; \
- case 10: /* st(4) */ \
- addr = blockend - KERNEL_U_ADDR + \
- ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \
- break; \
- case 11: /* st(5) */ \
- addr = blockend - KERNEL_U_ADDR + \
- ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \
- break; \
- case 12: /* st(6) */ \
- addr = blockend - KERNEL_U_ADDR + \
- ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \
- break; \
- case 13: /* st(7) */ \
- addr = blockend - KERNEL_U_ADDR + \
- ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \
- break; \
- case 14: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (ESP * sizeof(int)); break; \
- case 15: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EBP * sizeof(int)); break; \
- case 16: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (EIP * sizeof(int)); break; \
- case 17: \
- addr = blockend + (NBPG * UPAGES) - sizeof(struct user) + (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 = blockend - KERNEL_U_ADDR + \
- ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \
+ addr = ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \
} \
}
-#endif /* _SEQUENT_ */
-\f
-#undef FRAME_CHAIN
-#define FRAME_CHAIN(thisframe) ((thisframe)->pc == 0 ? \
- 0 : read_memory_integer((thisframe)->frame, 4))
-
-#define FRAME_CHAIN_VALID(chain, thisframe) \
- ((chain) != 0)
-
-#undef FRAME_ARGS_SKIP
-#define FRAME_ARGS_SKIP 0
/* Total amount of space needed to store our copies of the machine's
register state, the array `registers'. */
(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. */
#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
{ \
double val; \
- i387_to_double ((FROM), (char *)&val); \
+ floatformat_to_double (&floatformat_i387_ext, (FROM), &val); \
store_floating ((TO), TYPE_LENGTH (TYPE), val); \
}
-extern void
-i387_to_double PARAMS ((char *, char *));
/* Convert data from virtual format with type TYPE in buffer FROM
to raw format for register REGNUM in buffer TO. */
#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
{ \
double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
- double_to_i387((char *)&val, (TO)); \
+ floatformat_from_double (&floatformat_i387_ext, &val, (TO)); \
}
-extern void
-double_to_i387 PARAMS ((char *, char *));
/* Return the GDB type object for the "standard" data type
of data in register N. */
(N < 14) ? builtin_type_double : \
builtin_type_int)
-/* from m-i386.h (now known as tm-i386v.h). */
/* Store the address of the place in which to copy the structure the
- 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. */
+ 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) \
- { (SP) -= sizeof (ADDR); \
- write_memory ((SP), (char *) &(ADDR), sizeof (ADDR)); \
- write_register(0, (ADDR)); }
+#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,
extern void
print_387_status_word PARAMS ((unsigned int));
+
+/* 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
+
+/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
+ chain-pointer.
+ In the case of the i386, the frame's nominal address
+ is the address of a 4-byte word containing the calling frame's address. */
+#undef FRAME_CHAIN
+#define FRAME_CHAIN(thisframe) \
+ (thisframe->signal_handler_caller \
+ ? thisframe->frame \
+ : (!inside_entry_file ((thisframe)->pc) \
+ ? read_memory_integer ((thisframe)->frame, 4) \
+ : 0))
+
+/* A macro that tells us whether the function invocation represented
+ by FI does not have a frame on the stack associated with it. If it
+ does not, FRAMELESS is set to 1, else 0. */
+#undef FRAMELESS_FUNCTION_INVOCATION
+#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
+ do { \
+ if ((FI)->signal_handler_caller) \
+ (FRAMELESS) = 0; \
+ else \
+ (FRAMELESS) = frameless_look_for_prologue(FI); \
+ } while (0)
+
+/* Saved Pc. Get it from sigcontext if within sigtramp. */
+
+#undef FRAME_SAVED_PC
+#define FRAME_SAVED_PC(FRAME) \
+ (((FRAME)->signal_handler_caller \
+ ? sigtramp_saved_pc (FRAME) \
+ : read_memory_integer ((FRAME)->frame + 4, 4)) \
+ )
/* Definitions to make GDB run on a Sequent Symmetry under
- dynix 3.1 and ptx 1.3, with Weitek 1167 and i387 support.
- Copyright 1986, 1987, 1989, 1992, 1993 Free Software Foundation, Inc.
+ dynix 3.1, with Weitek 1167 and i387 support.
+ Copyright 1986, 1987, 1989, 1992, 1993, 1994 Free Software Foundation, Inc.
This file is part of GDB.
#define HAVE_WAIT_STRUCT
-#ifdef _SEQUENT_
-/* ptx */
-#define HAVE_TERMIOS
-#define USG
-
-#define MEM_FNS_DECLARED
-
-#define NEED_POSIX_SETPGID
-
-#define USE_O_NOCTTY
-
-#else
-/* dynix */
-
/* Get rid of any system-imposed stack limit if possible. */
#define SET_STACK_LIMIT_HUGE
-#endif
-
-/* XPT_DEBUG doesn't work yet under Dynix 3.0.12, but UNDEBUG does... */
-/* #define PTRACE_ATTACH XPT_DEBUG
-#define PTRACE_DETACH XPT_UNDEBUG
-#define ATTACH_DETACH */
-
-#ifdef _SEQUENT_
-/* ptx does attach as of ptx version 2.1 */
-#define ATTACH_DETACH 1
-#endif
-
#define HOST_BYTE_ORDER LITTLE_ENDIAN
/* We must fetch all the regs before storing, since we store all at once. */
#define CHILD_PREPARE_TO_STORE() read_register_bytes (0, NULL, REGISTER_BYTES)
-\f
-/* Interface definitions for kernel debugger KDB. */
-/* This doesn't work... */
-/* 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, %esp"); \
- asm ("movl %ebp, $0"); }
-
-/* Push the frame pointer register on the stack. */
-#define PUSH_FRAME_PTR \
- asm ("pushl %ebp");
-
-/* Copy the top-of-stack to the frame pointer register. */
-#define POP_FRAME_PTR \
- asm ("movl (%esp), %ebp");
-
-/* 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("pushad"); }
-/*
-{ asm("pushl %eax"); \
- asm("pushl %edx"); \
- asm("pushl %ecx"); \
- asm("pushl %st(0)"); \
- asm("pushl %st(1)"); \
- asm("pushl %ebx"); \
- asm("pushl %esi"); \
- asm("pushl %edi"); \
- asm("pushl %st(2)"); \
- asm("pushl %st(3)"); \
- asm("pushl %st(4)"); \
- asm("pushl %st(5)"); \
- asm("pushl %st(6)"); \
- asm("pushl %st(7)"); \
- asm("pushl %esp"); \
- asm("pushl %ebp"); \
- asm("pushl %eip"); \
- asm("pushl %eflags"); \
- asm("pushl %fp1"); \
- asm("pushl %fp2"); \
- asm("pushl %fp3"); \
- asm("pushl %fp4"); \
- asm("pushl %fp5"); \
- asm("pushl %fp6"); \
- asm("pushl %fp7"); \
- asm("pushl %fp8"); \
- asm("pushl %fp9"); \
- asm("pushl %fp10"); \
- asm("pushl %fp11"); \
- asm("pushl %fp12"); \
- asm("pushl %fp13"); \
- asm("pushl %fp14"); \
- asm("pushl %fp15"); \
- asm("pushl %fp16"); \
- asm("pushl %fp17"); \
- asm("pushl %fp18"); \
- asm("pushl %fp19"); \
- asm("pushl %fp20"); \
- asm("pushl %fp21"); \
- asm("pushl %fp22"); \
- asm("pushl %fp23"); \
- asm("pushl %fp24"); \
- asm("pushl %fp25"); \
- asm("pushl %fp26"); \
- asm("pushl %fp27"); \
- asm("pushl %fp28"); \
- asm("pushl %fp29"); \
- asm("pushl %fp30"); \
- asm("pushl %fp31"); \
-}
-*/
-/* 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 ("popad"); }
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