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[PATCH] Process record: Log %rax after syscall under amd64-linux
- From: Andrew D'Addesio <modchipv12 at gmail dot com>
- To: gdb-patches at sourceware dot org
- Cc: Andrew D'Addesio <modchipv12 at gmail dot com>
- Date: Thu, 10 May 2018 14:28:56 -0500
- Subject: [PATCH] Process record: Log %rax after syscall under amd64-linux
Log the return value after executing a system call instruction, as
we do for other archs (i386-linux, arm-linux, etc.)
gdb/ChangeLog:
2018-05-10 Andrew D'Addesio <modchipv12@gmail.com>
* amd64-linux-tdep.c (amd64_linux_syscall_record_common): Record
%rax.
---
gdb/amd64-linux-tdep.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c
index 2bd3d31..917ecf5 100644
--- a/gdb/amd64-linux-tdep.c
+++ b/gdb/amd64-linux-tdep.c
@@ -1510,6 +1510,9 @@ amd64_linux_syscall_record_common (struct regcache *regcache,
record_regs:
/* Record the return value of the system call. */
+ if (record_full_arch_list_add_reg (regcache, AMD64_RAX_REGNUM))
+ return -1;
+ /* Record registers clobbered by the 'syscall' instruction. */
if (record_full_arch_list_add_reg (regcache, AMD64_RCX_REGNUM))
return -1;
if (record_full_arch_list_add_reg (regcache, AMD64_R11_REGNUM))
--
2.7.4