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-rw-r--r--arch/x86/include/asm/compat.h11
-rw-r--r--fs/binfmt_elf.c13
-rw-r--r--fs/compat_binfmt_elf.c8
3 files changed, 20 insertions, 12 deletions
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
index f145e3326c6d..15cf0f831dee 100644
--- a/arch/x86/include/asm/compat.h
+++ b/arch/x86/include/asm/compat.h
@@ -165,10 +165,13 @@ struct compat_shmid64_ds {
typedef struct user_regs_struct compat_elf_gregset_t;
/* Full regset -- prstatus on x32, otherwise on ia32 */
-#define PRSTATUS_SIZE(S, R) (R != sizeof(S.pr_reg) ? 144 : 296)
-#define SET_PR_FPVALID(S, V, R) \
- do { *(int *) (((void *) &((S)->pr_reg)) + R) = (V); } \
- while (0)
+#define COMPAT_PRSTATUS_SIZE (user_64bit_mode(task_pt_regs(current)) \
+ ? sizeof(struct compat_elf_prstatus) \
+ : 144)
+#define COMPAT_SET_PR_FPVALID(S) \
+ (*(user_64bit_mode(task_pt_regs(current)) \
+ ? &(S)->pr_fpvalid \
+ : (int *)((void *)(S) + 140)) = 1)
#ifdef CONFIG_X86_X32_ABI
#define COMPAT_USE_64BIT_TIME \
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 950bc177238a..8380478d3d92 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1717,11 +1717,11 @@ static void do_thread_regset_writeback(struct task_struct *task,
}
#ifndef PRSTATUS_SIZE
-#define PRSTATUS_SIZE(S, R) sizeof(S)
+#define PRSTATUS_SIZE sizeof(struct elf_prstatus)
#endif
#ifndef SET_PR_FPVALID
-#define SET_PR_FPVALID(S, V, R) ((S)->pr_fpvalid = (V))
+#define SET_PR_FPVALID(S) ((S)->pr_fpvalid = 1)
#endif
static int fill_thread_core_info(struct elf_thread_core_info *t,
@@ -1729,7 +1729,6 @@ static int fill_thread_core_info(struct elf_thread_core_info *t,
long signr, size_t *total)
{
unsigned int i;
- int regset0_size;
/*
* NT_PRSTATUS is the one special case, because the regset data
@@ -1738,13 +1737,11 @@ static int fill_thread_core_info(struct elf_thread_core_info *t,
* We assume that regset 0 is NT_PRSTATUS.
*/
fill_prstatus(&t->prstatus, t->task, signr);
- regset0_size = regset_get(t->task, &view->regsets[0],
+ regset_get(t->task, &view->regsets[0],
sizeof(t->prstatus.pr_reg), &t->prstatus.pr_reg);
- if (regset0_size < 0)
- return 0;
fill_note(&t->notes[0], "CORE", NT_PRSTATUS,
- PRSTATUS_SIZE(t->prstatus, regset0_size), &t->prstatus);
+ PRSTATUS_SIZE, &t->prstatus);
*total += notesize(&t->notes[0]);
do_thread_regset_writeback(t->task, &view->regsets[0]);
@@ -1772,7 +1769,7 @@ static int fill_thread_core_info(struct elf_thread_core_info *t,
continue;
if (is_fpreg)
- SET_PR_FPVALID(&t->prstatus, 1, regset0_size);
+ SET_PR_FPVALID(&t->prstatus);
fill_note(&t->notes[i], is_fpreg ? "CORE" : "LINUX",
note_type, ret, data);
diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c
index 2c557229696a..962df845ed51 100644
--- a/fs/compat_binfmt_elf.c
+++ b/fs/compat_binfmt_elf.c
@@ -95,6 +95,14 @@
#define ELF_EXEC_PAGESIZE COMPAT_ELF_EXEC_PAGESIZE
#endif
+#ifdef COMPAT_PRSTATUS_SIZE
+#define PRSTATUS_SIZE COMPAT_PRSTATUS_SIZE
+#endif
+
+#ifdef COMPAT_SET_PR_FPVALID
+#define SET_PR_FPVALID(S) COMPAT_SET_PR_FPVALID(S)
+#endif
+
#ifdef COMPAT_ELF_PLAT_INIT
#undef ELF_PLAT_INIT
#define ELF_PLAT_INIT COMPAT_ELF_PLAT_INIT