diff options
Diffstat (limited to 'gnu/usr.bin/gdb/kgdb/trgt_i386.c')
| -rw-r--r-- | gnu/usr.bin/gdb/kgdb/trgt_i386.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/gnu/usr.bin/gdb/kgdb/trgt_i386.c b/gnu/usr.bin/gdb/kgdb/trgt_i386.c index 995f1a6..f0546ba 100644 --- a/gnu/usr.bin/gdb/kgdb/trgt_i386.c +++ b/gnu/usr.bin/gdb/kgdb/trgt_i386.c @@ -41,12 +41,15 @@ __FBSDID("$FreeBSD$"); #include <target.h> #include <gdbthread.h> #include <inferior.h> +#include <objfiles.h> #include <regcache.h> #include <frame-unwind.h> #include <i386-tdep.h> #include "kgdb.h" +static int ofs_fix; + void kgdb_trgt_fetch_registers(int regno __unused) { @@ -74,6 +77,23 @@ kgdb_trgt_store_registers(int regno __unused) fprintf_unfiltered(gdb_stderr, "XXX: %s\n", __func__); } +void +kgdb_trgt_new_objfile(struct objfile *objfile) +{ + + /* + * In revision 1.117 of i386/i386/exception.S trap handlers + * were changed to pass trapframes by reference rather than + * by value. Detect this by seeing if the first instruction + * at the 'calltrap' label is a "push %esp" which has the + * opcode 0x54. + */ + if (kgdb_parse("((char *)calltrap)[0]") == 0x54) + ofs_fix = 4; + else + ofs_fix = 0; +} + struct kgdb_tss_cache { CORE_ADDR pc; CORE_ADDR sp; @@ -285,8 +305,6 @@ kgdb_trgt_trapframe_prev_register(struct frame_info *next_frame, char dummy_valuep[MAX_REGISTER_SIZE]; struct kgdb_frame_cache *cache; int ofs, regsz; - static int ofs_fix = 0; - static int ofs_fixed = 0; regsz = register_size(current_gdbarch, regnum); @@ -298,18 +316,6 @@ kgdb_trgt_trapframe_prev_register(struct frame_info *next_frame, *lvalp = not_lval; *realnump = -1; - if (!ofs_fixed) { - /* - * In revision 1.117 of i386/i386/exception.S trap handlers - * were changed to pass trapframes by reference rather than - * by value. Detect this by seeing if the first instruction - * at the 'calltrap' label is a "push %esp" which has the - * opcode 0x54. - */ - if (kgdb_parse("((char *)calltrap)[0]") == 0x54) - ofs_fix = 4; - ofs_fixed = 1; - } ofs = (regnum >= I386_EAX_REGNUM && regnum <= I386_FS_REGNUM) ? kgdb_trgt_frame_offset[regnum] + ofs_fix : -1; if (ofs == -1) |
