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[PATCH] S390: Skip prologue using SAL information, if possible
- From: Andreas Arnez <arnez at linux dot vnet dot ibm dot com>
- To: gdb-patches at sourceware dot org
- Cc: Ulrich Weigand <uweigand at de dot ibm dot com>
- Date: Tue, 10 Mar 2015 11:32:53 +0100
- Subject: [PATCH] S390: Skip prologue using SAL information, if possible
- Authentication-results: sourceware.org; auth=none
Instead of analyzing the prologue and possibly coming to a wrong
conclusion, this change tries to skip the prologue with the use of
skip_prologue_using_sal. Only if that fails, the prologue analyzer is
invoked as before.
gdb/ChangeLog:
* s390-linux-tdep.c (s390_skip_prologue): Skip the prologue using
SAL, if possible.
---
gdb/s390-linux-tdep.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/gdb/s390-linux-tdep.c b/gdb/s390-linux-tdep.c
index e33eb8e..cafa57b 100644
--- a/gdb/s390-linux-tdep.c
+++ b/gdb/s390-linux-tdep.c
@@ -1462,7 +1462,16 @@ static CORE_ADDR
s390_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
struct s390_prologue_data data;
- CORE_ADDR skip_pc;
+ CORE_ADDR skip_pc, func_addr;
+
+ if (find_pc_partial_function (pc, NULL, &func_addr, NULL))
+ {
+ CORE_ADDR post_prologue_pc
+ = skip_prologue_using_sal (gdbarch, func_addr);
+ if (post_prologue_pc != 0)
+ return max (pc, post_prologue_pc);
+ }
+
skip_pc = s390_analyze_prologue (gdbarch, pc, (CORE_ADDR)-1, &data);
return skip_pc ? skip_pc : pc;
}
--
1.9.3