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* config/i386/tm-symmetry.h: Clean up, it is now only used for Dynix.
Remove all conditionals and definitions for ptx. I386_REGNO_TO_SYMMETRY moved to here from symm-tdep.c. Fix addresses of floating point registers in REGISTER_U_ADDR. STORE_STRUCT_RETURN now handles cc and gcc conventions. FRAME_CHAIN, FRAMELESS_FUNCTION_INVOCATION, FRAME_SAVED_PC, IN_SIGTRAMP, SIGCONTEXT_PC_OFFSET defined to make backtracing through signal trampoline code work. * config/i386/xm-symmetry.h: Clean up, it is now only used for Dynix. Remove all conditionals and definitions for ptx. Remove KDB definitions.
This commit is contained in:
Peter Schauer
parent
db2302cb93
commit
8a19fe2188
@ -1,6 +1,7 @@
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/* 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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Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994
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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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@ -21,20 +22,7 @@ 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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@ -46,13 +34,6 @@ extern int ptx_coff_regno_to_gdb();
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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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@ -126,8 +107,17 @@ extern int ptx_coff_regno_to_gdb();
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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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/*
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* Following macro translates i386 opcode register numbers to Symmetry
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* register numbers. This is used by i386_frame_find_saved_regs.
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*
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* %eax %ecx %edx %ebx %esp %ebp %esi %edi
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* i386 0 1 2 3 4 5 6 7
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* Symmetry 0 2 1 5 14 15 6 7
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*
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*/
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#define I386_REGNO_TO_SYMMETRY(n) \
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((n)==0?0 :(n)==1?2 :(n)==2?1 :(n)==3?5 :(n)==4?14 :(n)==5?15 :(n))
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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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@ -146,12 +136,10 @@ switch (regno) { \
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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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addr = ((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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addr = ((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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@ -160,28 +148,22 @@ switch (regno) { \
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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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addr = ((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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addr = ((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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addr = ((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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addr = ((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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addr = ((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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addr = ((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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@ -222,126 +204,9 @@ switch (regno) { \
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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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addr = ((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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@ -389,6 +254,8 @@ switch (regno) { \
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(N < 14) ? 1 : \
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0)
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#include "floatformat.h"
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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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@ -396,11 +263,9 @@ switch (regno) { \
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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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floatformat_to_double (&floatformat_i387_ext, (FROM), &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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@ -409,10 +274,8 @@ i387_to_double PARAMS ((char *, char *));
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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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floatformat_from_double (&floatformat_i387_ext, &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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@ -425,17 +288,14 @@ double_to_i387 PARAMS ((char *, char *));
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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:
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Why is it writing register 0? Is the symmetry different from tm-i386v.h,
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or is it some sort of artifact? FIXME. */
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subroutine will return. This is called from call_function.
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Native cc passes the address in eax, gcc (up to version 2.5.8)
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passes it on the stack. gcc should be fixed in future versions to
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adopt native cc conventions. */
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#undef STORE_STRUCT_RETURN
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#define STORE_STRUCT_RETURN(ADDR, SP) \
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{ (SP) -= sizeof (ADDR); \
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write_memory ((SP), (char *) &(ADDR), sizeof (ADDR)); \
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write_register(0, (ADDR)); }
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#define STORE_STRUCT_RETURN(ADDR, SP) write_register(0, (ADDR))
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/* Extract from an array REGBUF containing the (raw) register state
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a function return value of type TYPE, and copy that, in virtual format,
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@ -451,3 +311,46 @@ print_387_control_word PARAMS ((unsigned int));
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extern void
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print_387_status_word PARAMS ((unsigned int));
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/* The following redefines make backtracing through sigtramp work.
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They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
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from the sigcontext structure which is pushed by the kernel on the
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user stack, along with a pointer to it. */
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#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigcode", name))
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/* Offset to saved PC in sigcontext, from <signal.h>. */
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#define SIGCONTEXT_PC_OFFSET 16
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/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
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chain-pointer.
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In the case of the i386, the frame's nominal address
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is the address of a 4-byte word containing the calling frame's address. */
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#undef FRAME_CHAIN
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#define FRAME_CHAIN(thisframe) \
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(thisframe->signal_handler_caller \
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? thisframe->frame \
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: (!inside_entry_file ((thisframe)->pc) \
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? read_memory_integer ((thisframe)->frame, 4) \
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: 0))
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/* A macro that tells us whether the function invocation represented
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by FI does not have a frame on the stack associated with it. If it
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does not, FRAMELESS is set to 1, else 0. */
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#undef FRAMELESS_FUNCTION_INVOCATION
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#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
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do { \
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if ((FI)->signal_handler_caller) \
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(FRAMELESS) = 0; \
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else \
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(FRAMELESS) = frameless_look_for_prologue(FI); \
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} while (0)
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/* Saved Pc. Get it from sigcontext if within sigtramp. */
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#undef FRAME_SAVED_PC
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#define FRAME_SAVED_PC(FRAME) \
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(((FRAME)->signal_handler_caller \
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? sigtramp_saved_pc (FRAME) \
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: read_memory_integer ((FRAME)->frame + 4, 4)) \
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)
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@ -1,6 +1,6 @@
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/* Definitions to make GDB run on a Sequent Symmetry under
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dynix 3.1 and ptx 1.3, with Weitek 1167 and i387 support.
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Copyright 1986, 1987, 1989, 1992, 1993 Free Software Foundation, Inc.
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dynix 3.1, with Weitek 1167 and i387 support.
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Copyright 1986, 1987, 1989, 1992, 1993, 1994 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -25,136 +25,12 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define HAVE_WAIT_STRUCT
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#ifdef _SEQUENT_
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/* ptx */
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#define HAVE_TERMIOS
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#define USG
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#define MEM_FNS_DECLARED
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#define NEED_POSIX_SETPGID
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#define USE_O_NOCTTY
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#else
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/* dynix */
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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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#endif
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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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#ifdef _SEQUENT_
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/* ptx does attach as of ptx version 2.1 */
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#define ATTACH_DETACH 1
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#endif
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#define HOST_BYTE_ORDER LITTLE_ENDIAN
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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.
|
||||
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"); }
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user