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[PATCH/i386newframe] Fix QNX/Neutrino
- From: Mark Kettenis <kettenis at chello dot nl>
- To: gdb-patches at sources dot redhat dot com
- Date: Thu, 29 May 2003 12:22:04 +0200 (CEST)
- Subject: [PATCH/i386newframe] Fix QNX/Neutrino
Checked in.
Mark
Index: ChangeLog
from Mark Kettenis <kettenis@gnu.org>
* i386-nto-tdep.c (i386nto_sigcontext_addr): Adapt for new frame
unwinder.
Index: i386-nto-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/i386-nto-tdep.c,v
retrieving revision 1.2.4.1
diff -u -p -r1.2.4.1 i386-nto-tdep.c
--- i386-nto-tdep.c 18 May 2003 09:44:12 -0000 1.2.4.1
+++ i386-nto-tdep.c 29 May 2003 10:19:37 -0000
@@ -231,14 +231,20 @@ i386nto_pc_in_sigtramp (CORE_ADDR pc, ch
return name && strcmp ("__signalstub", name) == 0;
}
-#define SIGCONTEXT_OFFSET 136
+#define I386_NTO_SIGCONTEXT_OFFSET 136
+
+/* Assuming NEXT_FRAME is a frame following a QNX Neutrino sigtramp
+ routine, return the address of the associated sigcontext structure. */
+
static CORE_ADDR
-i386nto_sigcontext_addr (struct frame_info *frame)
+i386nto_sigcontext_addr (struct frame_info *next_frame)
{
- if (get_next_frame (frame))
- return get_frame_base (get_next_frame (frame)) + SIGCONTEXT_OFFSET;
+ char buf[4];
+
+ frame_unwind_register (next_frame, SP_REGNUM, buf);
+ sp = extract_unsigned_integer (buf, 4);
- return read_register (SP_REGNUM) + SIGCONTEXT_OFFSET;
+ return sp + I386_NTO_SIGCONTEXT_OFFSET;
}
static void