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Make our i386 hacks in a less vendor file disturbing manner.

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This commit is contained in:
David E. O'Brien 2002-07-10 07:48:45 +00:00
parent 2b1f5a4271
commit e2a86a90af
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=99718
2 changed files with 46 additions and 29 deletions
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50
contrib/gdb/gdb/config/i386/tm-fbsd.h
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@ -26,10 +26,6 @@
#define HAVE_I387_REGS
#include "i386/tm-i386.h"
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
/* FreeBSD/ELF uses stabs-in-ELF with the DWARF register numbering
scheme by default, so we must redefine STAB_REG_TO_REGNUM. This
messes up the floating-point registers for a.out, but there is not
@ -47,42 +43,38 @@
/* Support for longjmp. */
/* Details about jmp_buf. It's supposed to be an array of integers. */
#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */
#define JB_PC 0 /* Array index of saved PC. */
/* Figure out where the longjmp will land. Store the address that
longjmp will jump to in *ADDR, and return non-zero if successful. */
#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
extern int get_longjmp_target (CORE_ADDR *addr);
/* On FreeBSD, sigtramp has size 0x18 and is immediately below the
ps_strings struct which has size 0x10 and is at the top of the
user stack. */
/* Support for signal handlers. */
#undef SIGTRAMP_START
#undef SIGTRAMP_END
#define SIGTRAMP_START(pc) 0xbfbfdfd8
#define SIGTRAMP_END(pc) 0xbfbfdff0
#define IN_SIGTRAMP(pc, name) i386bsd_in_sigtramp (pc, name)
extern int i386bsd_in_sigtramp (CORE_ADDR pc, char *name);
/* These defines allow the recognition of sigtramps as a function name
<sigtramp>.
FIXME: kettenis/2001-07-13: These should be added to the target
vector and turned into functions when we go "multi-arch". */
#define SIGTRAMP_START(pc) i386bsd_sigtramp_start
#define SIGTRAMP_END(pc) i386bsd_sigtramp_end
extern CORE_ADDR i386bsd_sigtramp_start;
extern CORE_ADDR i386bsd_sigtramp_end;
extern CORE_ADDR fbsd_kern_frame_saved_pc(struct frame_info *fr);
/* Override FRAME_SAVED_PC to enable the recognition of signal handlers. */
#undef FRAME_SAVED_PC
#if __FreeBSD_version >= 500032
#define FRAME_SAVED_PC(FRAME) \
(kernel_debugging ? fbsd_kern_frame_saved_pc(FRAME) : \
(((FRAME)->signal_handler_caller \
? sigtramp_saved_pc (FRAME) \
: read_memory_integer ((FRAME)->frame + 4, 4)) \
))
#else
#define FRAME_SAVED_PC(FRAME) \
(((FRAME)->signal_handler_caller \
? sigtramp_saved_pc (FRAME) \
: read_memory_integer ((FRAME)->frame + 4, 4)) \
)
#endif
/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
#define SIGCONTEXT_PC_OFFSET 20
#define FRAME_SAVED_PC(frame) i386bsd_frame_saved_pc (frame)
extern CORE_ADDR i386bsd_frame_saved_pc (struct frame_info *frame);
/* Shared library support. */

25
gnu/usr.bin/binutils/gdb/fbsd-kgdb-i386.h
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@ -3,4 +3,29 @@
#ifndef FBSD_KGDB_I386_H
#define FBSD_KGDB_I386_H
/* On FreeBSD, sigtramp has size 0x18 and is immediately below the
ps_strings struct which has size 0x10 and is at the top of the
user stack. */
#undef SIGTRAMP_START
#define SIGTRAMP_START(pc) 0xbfbfdfd8
#undef SIGTRAMP_END
#define SIGTRAMP_END(pc) 0xbfbfdff0
/* Override FRAME_SAVED_PC to enable the recognition of signal handlers. */
extern CORE_ADDR fbsd_kern_frame_saved_pc(struct frame_info *fr);
#undef FRAME_SAVED_PC
#define FRAME_SAVED_PC(FRAME) \
(kernel_debugging \
? fbsd_kern_frame_saved_pc(FRAME) : \
(FRAME)->signal_handler_caller \
? sigtramp_saved_pc (FRAME) \
: read_memory_integer ((FRAME)->frame + 4, 4))
/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
#define SIGCONTEXT_PC_OFFSET 20
#endif /* FBSD_KGDB_I386_H */