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| author | Fred Fish <fnf@specifix.com> | 1992-03-04 20:50:10 +0000 |
|---|---|---|
| committer | Fred Fish <fnf@specifix.com> | 1992-03-04 20:50:10 +0000 |
| commit | d7eddc517782bf0673e4bcd15c4159ae5799a247 (patch) | |
| tree | 5cbaafd5433cb047b3a50693a4120fa5d0de4ae7 /gdb/tm-i386v4.h | |
| parent | c7cb8acbe8eb1226ef76fe716aa050d3b9d0e860 (diff) | |
| download | gdb-d7eddc517782bf0673e4bcd15c4159ae5799a247.zip gdb-d7eddc517782bf0673e4bcd15c4159ae5799a247.tar.gz gdb-d7eddc517782bf0673e4bcd15c4159ae5799a247.tar.bz2 | |
* defs.h, utils.c: xrealloc takes PTR as first arg.
* defs.h: Reword confusing comment about ANSI prototypes.
* defs.h: Some minor whitespace changes.
* infrun.c (wait_for_inferior): Compare int tmp to int 0,
not NULL, which can be (void *).
* tm-amix.h, tm-i386v4.h: Add defines for setjmp/longjmp handling.
* tm-i386v.h (SP_ARG0): Define
* xm-sysv4.h: Back out of change for missing prototypes.
* i386-tdep.c (get_longjmp_target): Add function.
Diffstat (limited to 'gdb/tm-i386v4.h')
| -rw-r--r-- | gdb/tm-i386v4.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gdb/tm-i386v4.h b/gdb/tm-i386v4.h index 244e43e..727e350 100644 --- a/gdb/tm-i386v4.h +++ b/gdb/tm-i386v4.h @@ -41,3 +41,26 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #undef FRAME_NUM_ARGS #define FRAME_NUM_ARGS(val,fi) (val = -1) + +/* Offsets (in target ints) into jmp_buf. Not defined in any system header + file, so we have to step through setjmp/longjmp with a debugger and figure + them out. Note that <setjmp> defines _JBLEN as 10, which is the default + if no specific machine is selected, even though we only use 6 slots. */ + +#define JB_ELEMENT_SIZE sizeof(int) /* jmp_buf[_JBLEN] is array of ints */ + +#define JB_EBX 0 +#define JB_ESI 1 +#define JB_EDI 2 +#define JB_EBP 3 +#define JB_ESP 4 +#define JB_EDX 5 + +#define JB_PC JB_EDX /* Setjmp()'s return PC saved in EDX */ + +/* Figure out where the longjmp will land. Slurp the args out of the stack. + We expect the first arg to be a pointer to the jmp_buf structure from which + we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. + This routine returns true on success */ + +#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR) |