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Re: [PATCH 4/8] Implement unconditional_branch_address method for x86-64 and i386
- From: Kevin Buettner <kevinb at redhat dot com>
- To: gdb-patches at sourceware dot org
- Date: Thu, 17 Sep 2015 19:03:23 -0700
- Subject: Re: [PATCH 4/8] Implement unconditional_branch_address method for x86-64 and i386
- Authentication-results: sourceware.org; auth=none
- References: <20150818235334 dot 1afb0c85 at pinnacle dot lan> <20150819000629 dot 5a0ecc4e at pinnacle dot lan>
Here is an updated patch for x86_64 and i386.
Implement unconditional_branch_destination method for x86-64 and i386.
gdb/ChangeLog:
* i386-tdep.c (i386_unconditional_branch_destination): New function.
(i386_gdbarch_init): Register i386_unconditional_branch_destination.
---
gdb/i386-tdep.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index 9d52d4a..4fd9f6e 100644
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -8237,6 +8237,23 @@ i386_validate_tdesc_p (struct gdbarch_tdep *tdep,
return valid_p;
}
+/* Implement the unconditional_branch_destination gdbarch method. */
+
+static int
+i386_unconditional_branch_destination (struct gdbarch *gdbarch, CORE_ADDR pc,
+ CORE_ADDR *dest)
+{
+ CORE_ADDR new_pc = i386_follow_jump (gdbarch, pc);
+
+ if (new_pc == pc)
+ return 0;
+ else
+ {
+ *dest = new_pc;
+ return 1;
+ }
+}
+
static struct gdbarch *
i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
@@ -8582,6 +8599,10 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_fast_tracepoint_valid_at (gdbarch,
i386_fast_tracepoint_valid_at);
+ /* Unconditional Branch. */
+ set_gdbarch_unconditional_branch_destination
+ (gdbarch, i386_unconditional_branch_destination);
+
return gdbarch;
}