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[PATCH v2 08/13] gdb/linux-record: Fix [gs]etgroups16 syscall
- From: Marcin KoÅcielnicki <koriakin at 0x04 dot net>
- To: palves at redhat dot com, qiyaoltc at gmail dot com
- Cc: gdb-patches at sourceware dot org, Marcin KoÅcielnicki <koriakin at 0x04 dot net>
- Date: Thu, 22 Oct 2015 15:39:21 +0200
- Subject: [PATCH v2 08/13] gdb/linux-record: Fix [gs]etgroups16 syscall
- Authentication-results: sourceware.org; auth=none
- References: <5628E5D6 dot 5020706 at 0x04 dot net> <1445521166-14492-1-git-send-email-koriakin at 0x04 dot net>
Memory size for getgroups16 needs to be multiplied by entry count, and only
needs recording if the pointer is non-NULL. setgroups16, on the other hand,
doesn't write to user memory and doesn't need special handling at all.
gdb/ChangeLog:
* linux-record.c (record_linux_system_call): Fix [gs]etgroups16.
---
gdb/ChangeLog | 4 ++++
gdb/linux-record.c | 17 ++++++++++-------
2 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index ce717ae..1c3cc04 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,9 @@
2015-10-22 Marcin KoÅcielnicki <koriakin@0x04.net>
+ * linux-record.c (record_linux_system_call): Fix [gs]etgroups16.
+
+2015-10-22 Marcin KoÅcielnicki <koriakin@0x04.net>
+
* aarch64-linux-tdep.c (aarch64_linux_init_abi): Add size_time_t.
* amd64-linux-tdep.c (amd64_linux_init_abi): Add size_time_t.
(amd64_x32_linux_init_abi): Add size_time_t.
diff --git a/gdb/linux-record.c b/gdb/linux-record.c
index dbd8f14..25cbda1 100644
--- a/gdb/linux-record.c
+++ b/gdb/linux-record.c
@@ -628,16 +628,19 @@ record_linux_system_call (enum gdb_syscall syscall,
case gdb_sys_getgroups16:
regcache_raw_read_unsigned (regcache, tdep->arg2, &tmpulongest);
- if (record_full_arch_list_add_mem ((CORE_ADDR) tmpulongest,
- tdep->size_old_gid_t))
- return -1;
+ if (tmpulongest)
+ {
+ ULONGEST gidsetsize;
+
+ regcache_raw_read_unsigned (regcache, tdep->arg1,
+ &gidsetsize);
+ tmpint = tdep->size_old_gid_t * (int) gidsetsize;
+ if (record_full_arch_list_add_mem ((CORE_ADDR) tmpulongest, tmpint))
+ return -1;
+ }
break;
case gdb_sys_setgroups16:
- regcache_raw_read_unsigned (regcache, tdep->arg2, &tmpulongest);
- if (record_full_arch_list_add_mem ((CORE_ADDR) tmpulongest,
- tdep->size_old_gid_t))
- return -1;
break;
case gdb_old_select:
--
2.6.1