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| author | Mark Kettenis <kettenis@gnu.org> | 2000-03-04 23:37:33 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@gnu.org> | 2000-03-04 23:37:33 +0000 |
| commit | 45a816d93ec86fb4aec161713ec6b3deaac68872 (patch) | |
| tree | 84a798d968969f459c8976cc4e8cb3f349888119 /gdb/config | |
| parent | 8ae7f924f36810814ec82c523bfc938c26b78c00 (diff) | |
| download | gdb-45a816d93ec86fb4aec161713ec6b3deaac68872.zip gdb-45a816d93ec86fb4aec161713ec6b3deaac68872.tar.gz gdb-45a816d93ec86fb4aec161713ec6b3deaac68872.tar.bz2 | |
2000-03-04 Mark Kettenis <kettenis@gnu.org>
Fix support for Linux/i386 signal trampolines. The old approach
didn't work for Linux 2.2 and beyond, and didn't work with recent
versions of the GNU C library.
* i386-tdep.c (LINUX_RT_SIGTRAMP_INSN0, LINUX_RT_SIGTRAMP_OFFSET0,
LINUX_RT_SIGTRAMP_INSN1, LINUX_RT_SIGTRAMP_OFFSET1): New defines.
(linux_rt_sigtramp_code): New variable.
(LINUX_RT_SIGTRAMP_LEN): New define.
(i386_linux_rt_sigtramp_start): New function. Detect start of
signal trampolines for RT signals.
(i386_linux_sigtramp): Removed.
(i386_linux_in_sigtramp): New function.
(i386_linux_sigcontext_addr): New function. Recognize the names
of the signal tranmpolines used by recent versions of the GNU C
library, and add support for RT signals.
(LINUX_SIGCONTEXT_PC_OFFSET, LINUX_SIGCONTEXT_SP_OFFSET): New
defines. Moved here from config/i386/tm-linux.h.
(i386_linux_sigtramp_saved_pc, i386_linux_sigtramp_saved_sp):
Reimplement in terms of i386_linux_sigcontext_addr.
* config/i386/tm-linux.h (LINUX_SIGCONTEXT_SIZE): Removed.
(LINUX_SIGCONTEXT_PC_OFFSET, LINUX_SIGCONTEXT_SP_OFFSET):
Moved to i386-tdep.c.
(IN_SIGTRAMP): Redefine to call i386_linux_in_sigtramp.
Diffstat (limited to 'gdb/config')
| -rw-r--r-- | gdb/config/i386/tm-linux.h | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/gdb/config/i386/tm-linux.h b/gdb/config/i386/tm-linux.h index a043489..391d5c0 100644 --- a/gdb/config/i386/tm-linux.h +++ b/gdb/config/i386/tm-linux.h @@ -30,15 +30,6 @@ #include "i386/tm-i386.h" #include "tm-linux.h" -/* Size of sigcontext, from <asm/sigcontext.h>. */ -#define LINUX_SIGCONTEXT_SIZE (88) - -/* Offset to saved PC in sigcontext, from <asm/sigcontext.h>. */ -#define LINUX_SIGCONTEXT_PC_OFFSET (56) - -/* Offset to saved SP in sigcontext, from <asm/sigcontext.h>. */ -#define LINUX_SIGCONTEXT_SP_OFFSET (28) - #define LOW_RETURN_REGNUM 0 /* holds low four bytes of result */ #define HIGH_RETURN_REGNUM 2 /* holds high four bytes of result */ @@ -108,15 +99,14 @@ extern int i387_store_floating (PTR addr, int len, long double val); order to support backtracing through calls to signal handlers. */ #define I386_LINUX_SIGTRAMP -#define IN_SIGTRAMP(pc, name) ((name) == NULL && i386_linux_sigtramp (pc)) - -extern int i386_linux_sigtramp PARAMS ((CORE_ADDR)); +#define IN_SIGTRAMP(pc, name) i386_linux_in_sigtramp (pc, name) +extern int i386_linux_in_sigtramp (CORE_ADDR, char *); /* We need our own version of sigtramp_saved_pc to get the saved PC in a sigtramp routine. */ #define sigtramp_saved_pc i386_linux_sigtramp_saved_pc -extern CORE_ADDR i386_linux_sigtramp_saved_pc PARAMS ((struct frame_info *)); +extern CORE_ADDR i386_linux_sigtramp_saved_pc (struct frame_info *); /* Signal trampolines don't have a meaningful frame. As in tm-i386.h, the frame pointer value we use is actually the frame pointer of the @@ -162,7 +152,7 @@ extern CORE_ADDR i386_linux_sigtramp_saved_pc PARAMS ((struct frame_info *)); ? read_memory_integer (i386_linux_sigtramp_saved_sp ((FRAME)->next), 4) \ : read_memory_integer ((FRAME)->frame + 4, 4))) -extern CORE_ADDR i386_linux_sigtramp_saved_sp PARAMS ((struct frame_info *)); +extern CORE_ADDR i386_linux_sigtramp_saved_sp (struct frame_info *); /* When we call a function in a shared library, and the PLT sends us into the dynamic linker to find the function's real address, we |