Make our i386 hacks in a less vendor file disturbing manner.
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2b1f5a4271
commit
e2a86a90af
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=99718
@ -26,10 +26,6 @@
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#define HAVE_I387_REGS
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#include "i386/tm-i386.h"
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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/* FreeBSD/ELF uses stabs-in-ELF with the DWARF register numbering
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scheme by default, so we must redefine STAB_REG_TO_REGNUM. This
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messes up the floating-point registers for a.out, but there is not
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@ -47,42 +43,38 @@
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/* Support for longjmp. */
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/* Details about jmp_buf. It's supposed to be an array of integers. */
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#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */
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#define JB_PC 0 /* Array index of saved PC. */
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/* Figure out where the longjmp will land. Store the address that
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longjmp will jump to in *ADDR, and return non-zero if successful. */
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#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
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extern int get_longjmp_target (CORE_ADDR *addr);
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/* On FreeBSD, sigtramp has size 0x18 and is immediately below the
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ps_strings struct which has size 0x10 and is at the top of the
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user stack. */
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/* Support for signal handlers. */
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#undef SIGTRAMP_START
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#undef SIGTRAMP_END
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#define SIGTRAMP_START(pc) 0xbfbfdfd8
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#define SIGTRAMP_END(pc) 0xbfbfdff0
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#define IN_SIGTRAMP(pc, name) i386bsd_in_sigtramp (pc, name)
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extern int i386bsd_in_sigtramp (CORE_ADDR pc, char *name);
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/* These defines allow the recognition of sigtramps as a function name
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<sigtramp>.
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FIXME: kettenis/2001-07-13: These should be added to the target
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vector and turned into functions when we go "multi-arch". */
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#define SIGTRAMP_START(pc) i386bsd_sigtramp_start
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#define SIGTRAMP_END(pc) i386bsd_sigtramp_end
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extern CORE_ADDR i386bsd_sigtramp_start;
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extern CORE_ADDR i386bsd_sigtramp_end;
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extern CORE_ADDR fbsd_kern_frame_saved_pc(struct frame_info *fr);
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/* Override FRAME_SAVED_PC to enable the recognition of signal handlers. */
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#undef FRAME_SAVED_PC
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#if __FreeBSD_version >= 500032
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#define FRAME_SAVED_PC(FRAME) \
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(kernel_debugging ? fbsd_kern_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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#else
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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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#endif
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/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
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#define SIGCONTEXT_PC_OFFSET 20
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#define FRAME_SAVED_PC(frame) i386bsd_frame_saved_pc (frame)
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extern CORE_ADDR i386bsd_frame_saved_pc (struct frame_info *frame);
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/* Shared library support. */
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@ -3,4 +3,29 @@
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#ifndef FBSD_KGDB_I386_H
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#define FBSD_KGDB_I386_H
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/* On FreeBSD, sigtramp has size 0x18 and is immediately below the
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ps_strings struct which has size 0x10 and is at the top of the
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user stack. */
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#undef SIGTRAMP_START
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#define SIGTRAMP_START(pc) 0xbfbfdfd8
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#undef SIGTRAMP_END
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#define SIGTRAMP_END(pc) 0xbfbfdff0
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/* Override FRAME_SAVED_PC to enable the recognition of signal handlers. */
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extern CORE_ADDR fbsd_kern_frame_saved_pc(struct frame_info *fr);
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#undef FRAME_SAVED_PC
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#define FRAME_SAVED_PC(FRAME) \
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(kernel_debugging \
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? fbsd_kern_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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/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
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#define SIGCONTEXT_PC_OFFSET 20
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#endif /* FBSD_KGDB_I386_H */
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