67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
--- gdb/config/i386/tm-fbsd.h Sat Jul 28 10:03:38 2001
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+++ gdb/config/i386/tm-fbsd.h Fri Jun 7 08:32:14 2002
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@@ -41,38 +45,42 @@
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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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-
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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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-
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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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-
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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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-/* Support for signal handlers. */
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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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+
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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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-
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-/* These defines allow the recognition of sigtramps as a function name
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- <sigtramp>.
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-
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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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-
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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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-#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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+#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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+
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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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/* Shared library support. */
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