summaryrefslogtreecommitdiff
path: root/arch/arm64/kernel/signal32.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm64/kernel/signal32.c')
-rw-r--r--arch/arm64/kernel/signal32.c37
1 files changed, 5 insertions, 32 deletions
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
index e393174fe859..e51bbe79f5b5 100644
--- a/arch/arm64/kernel/signal32.c
+++ b/arch/arm64/kernel/signal32.c
@@ -100,34 +100,6 @@ struct compat_rt_sigframe {
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
-/*
- * For ARM syscalls, the syscall number has to be loaded into r7.
- * We do not support an OABI userspace.
- */
-#define MOV_R7_NR_SIGRETURN (0xe3a07000 | __NR_compat_sigreturn)
-#define SVC_SYS_SIGRETURN (0xef000000 | __NR_compat_sigreturn)
-#define MOV_R7_NR_RT_SIGRETURN (0xe3a07000 | __NR_compat_rt_sigreturn)
-#define SVC_SYS_RT_SIGRETURN (0xef000000 | __NR_compat_rt_sigreturn)
-
-/*
- * For Thumb syscalls, we also pass the syscall number via r7. We therefore
- * need two 16-bit instructions.
- */
-#define SVC_THUMB_SIGRETURN (((0xdf00 | __NR_compat_sigreturn) << 16) | \
- 0x2700 | __NR_compat_sigreturn)
-#define SVC_THUMB_RT_SIGRETURN (((0xdf00 | __NR_compat_rt_sigreturn) << 16) | \
- 0x2700 | __NR_compat_rt_sigreturn)
-
-const compat_ulong_t aarch32_sigret_code[6] = {
- /*
- * AArch32 sigreturn code.
- * We don't construct an OABI SWI - instead we just set the imm24 field
- * to the EABI syscall number so that we create a sane disassembly.
- */
- MOV_R7_NR_SIGRETURN, SVC_SYS_SIGRETURN, SVC_THUMB_SIGRETURN,
- MOV_R7_NR_RT_SIGRETURN, SVC_SYS_RT_SIGRETURN, SVC_THUMB_RT_SIGRETURN,
-};
-
static inline int put_sigset_t(compat_sigset_t __user *uset, sigset_t *set)
{
compat_sigset_t cset;
@@ -474,12 +446,13 @@ static void compat_setup_return(struct pt_regs *regs, struct k_sigaction *ka,
/* Check if the handler is written for ARM or Thumb */
thumb = handler & 1;
- if (thumb) {
+ if (thumb)
spsr |= COMPAT_PSR_T_BIT;
- spsr &= ~COMPAT_PSR_IT_MASK;
- } else {
+ else
spsr &= ~COMPAT_PSR_T_BIT;
- }
+
+ /* The IT state must be cleared for both ARM and Thumb-2 */
+ spsr &= ~COMPAT_PSR_IT_MASK;
if (ka->sa.sa_flags & SA_RESTORER) {
retcode = ptr_to_compat(ka->sa.sa_restorer);