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[PATCH] Fix backtraces throught signal handlers on Solaris x86
- From: Mark Kettenis <kettenis at chello dot nl>
- To: gdb-patches at sources dot redhat dot com
- Date: Sun, 28 Dec 2003 20:49:45 +0100 (CET)
- Subject: [PATCH] Fix backtraces throught signal handlers on Solaris x86
Committed,
Mark
Index: ChangeLog
from Mark Kettenis <kettenis@gnu.org>
* i386-sol2-tdep.c (i386_sol2_mcontext_addr): New function.
(i386_sol2_init_abi): Initialize TDEP->sigcontext_addr,
TDEP->sc_reg_offset and TDEP->sc_num_regs.
Index: i386-sol2-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/i386-sol2-tdep.c,v
retrieving revision 1.12
diff -u -p -r1.12 i386-sol2-tdep.c
--- i386-sol2-tdep.c 15 Dec 2003 21:54:30 -0000 1.12
+++ i386-sol2-tdep.c 28 Dec 2003 19:47:01 -0000
@@ -53,6 +53,20 @@ i386_sol2_pc_in_sigtramp (CORE_ADDR pc,
return (pc == 0xffffffff);
}
+/* Solaris doesn't have a `struct sigcontext', but it does have a
+ `mcontext_t' that contains the saved set of machine registers. */
+
+static CORE_ADDR
+i386_sol2_mcontext_addr (struct frame_info *next_frame)
+{
+ CORE_ADDR sp, ucontext_addr;
+
+ sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM);
+ ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4);
+
+ return ucontext_addr + 36;
+}
+
/* Solaris 2. */
static void
@@ -70,6 +84,10 @@ i386_sol2_init_abi (struct gdbarch_info
tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
tdep->sizeof_gregset = 19 * 4;
tdep->sizeof_fpregset = 380;
+
+ tdep->sigcontext_addr = i386_sol2_mcontext_addr;
+ tdep->sc_reg_offset = tdep->gregset_reg_offset;
+ tdep->sc_num_regs = tdep->gregset_num_regs;
/* Signal trampolines are slightly different from SVR4. */
set_gdbarch_pc_in_sigtramp (gdbarch, i386_sol2_pc_in_sigtramp);