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Define FRAME_SAVED_PC to use the common sigtramp_saved_pc() just like

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the i386 does.  The previous definition was a SunOS-specific hack,
and if that is really still needed somwhere, it can still be used
by defining sigtramp_saved_pc as m68k_sigtramp_saved_pc in the
target-specific tm.h file.  The common sigtramp_saved_pc() fucntion
uses SIGCONTEXT_PC_OFFSET to find the return PC (the best way).
Do not define SIG_PC_FP_OFFSET here.  (very machine-specific!)
This commit is contained in:
gwr 1998-01-14 18:42:05 +00:00
parent 6cc4f2227c
commit eba66671ed
1 changed files with 9 additions and 18 deletions
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27
gnu/dist/gdb/config/m68k/tm-m68k.h vendored
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@ -255,8 +255,8 @@ extern CORE_ADDR m68k_saved_pc_after_call PARAMS ((struct frame_info *));
(which isn't really on the stack. I'm not sure this is right for anything
but BSD4.3 on an hp300. */
#define FRAME_CHAIN(thisframe) \
(thisframe->signal_handler_caller \
? thisframe->frame \
((thisframe)->signal_handler_caller \
? (thisframe)->frame \
: (!inside_entry_file ((thisframe)->pc) \
? read_memory_integer ((thisframe)->frame, 4) \
: 0))
@ -266,6 +266,7 @@ extern CORE_ADDR m68k_saved_pc_after_call PARAMS ((struct frame_info *));
/* 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. */
#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
do { \
if ((FI)->signal_handler_caller) \
@ -274,24 +275,14 @@ extern CORE_ADDR m68k_saved_pc_after_call PARAMS ((struct frame_info *));
(FRAMELESS) = frameless_look_for_prologue(FI); \
} while (0)
/* This was determined by experimentation on hp300 BSD 4.3. Perhaps
it corresponds to some offset in /usr/include/sys/user.h or
something like that. Using some system include file would
have the advantage of probably being more robust in the face
of OS upgrades, but the disadvantage of being wrong for
cross-debugging. */
#define SIG_PC_FP_OFFSET 530
/* Saved Pc. Get it from sigcontext if within sigtramp. */
#define FRAME_SAVED_PC(FRAME) \
(((FRAME)->signal_handler_caller \
? ((FRAME)->next \
? read_memory_integer ((FRAME)->next->frame + SIG_PC_FP_OFFSET, 4) \
: read_memory_integer (read_register (SP_REGNUM) \
+ SIG_PC_FP_OFFSET - 8, 4) \
) \
: read_memory_integer ((FRAME)->frame + 4, 4)) \
)
((FRAME)->signal_handler_caller \
? sigtramp_saved_pc (FRAME) \
: read_memory_integer ((FRAME)->frame + 4, 4))
extern CORE_ADDR sigtramp_saved_pc PARAMS ((struct frame_info *));
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)