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-rw-r--r--arch/parisc/Kconfig1
-rw-r--r--arch/parisc/kernel/entry.S38
-rw-r--r--arch/parisc/kernel/signal.c19
-rw-r--r--arch/parisc/kernel/signal32.c35
-rw-r--r--arch/parisc/kernel/signal32.h8
-rw-r--r--arch/parisc/kernel/syscall_table.S2
6 files changed, 6 insertions, 97 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index b77feffbadea..9804a9e34979 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -23,6 +23,7 @@ config PARISC
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS
+ select GENERIC_SIGALTSTACK
help
The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index bfb44247d7a7..240d153daec3 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -1748,44 +1748,6 @@ ENTRY(sys_rt_sigreturn_wrapper)
LDREG PT_GR28(%r1),%r28 /* reload original r28 for syscall_exit */
ENDPROC(sys_rt_sigreturn_wrapper)
-ENTRY(sys_sigaltstack_wrapper)
- /* Get the user stack pointer */
- LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
- ldo TASK_REGS(%r1),%r24 /* get pt regs */
- LDREG TASK_PT_GR30(%r24),%r24
- STREG %r2, -RP_OFFSET(%r30)
-#ifdef CONFIG_64BIT
- ldo FRAME_SIZE(%r30), %r30
- BL do_sigaltstack,%r2
- ldo -16(%r30),%r29 /* Reference param save area */
-#else
- BL do_sigaltstack,%r2
- ldo FRAME_SIZE(%r30), %r30
-#endif
-
- ldo -FRAME_SIZE(%r30), %r30
- LDREG -RP_OFFSET(%r30), %r2
- bv %r0(%r2)
- nop
-ENDPROC(sys_sigaltstack_wrapper)
-
-#ifdef CONFIG_64BIT
-ENTRY(sys32_sigaltstack_wrapper)
- /* Get the user stack pointer */
- LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r24
- LDREG TASK_PT_GR30(%r24),%r24
- STREG %r2, -RP_OFFSET(%r30)
- ldo FRAME_SIZE(%r30), %r30
- BL do_sigaltstack32,%r2
- ldo -16(%r30),%r29 /* Reference param save area */
-
- ldo -FRAME_SIZE(%r30), %r30
- LDREG -RP_OFFSET(%r30), %r2
- bv %r0(%r2)
- nop
-ENDPROC(sys32_sigaltstack_wrapper)
-#endif
-
ENTRY(syscall_exit)
/* NOTE: HP-UX syscalls also come through here
* after hpux_syscall_exit fixes up return
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 537996955998..64d315f6d2a4 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -143,7 +143,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
goto give_sigsegv;
DBG(1,"sys_rt_sigreturn: usp %#08lx stack 0x%p\n",
usp, &compat_frame->uc.uc_stack);
- if (do_sigaltstack32(&compat_frame->uc.uc_stack, NULL, usp) == -EFAULT)
+ if (compat_restore_altstack(&compat_frame->uc.uc_stack))
goto give_sigsegv;
} else
#endif
@@ -154,7 +154,7 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
goto give_sigsegv;
DBG(1,"sys_rt_sigreturn: usp %#08lx stack 0x%p\n",
usp, &frame->uc.uc_stack);
- if (do_sigaltstack(&frame->uc.uc_stack, NULL, usp) == -EFAULT)
+ if (restore_altstack(&frame->uc.uc_stack))
goto give_sigsegv;
}
@@ -260,15 +260,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
if (is_compat_task()) {
DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &compat_frame->info);
err |= copy_siginfo_to_user32(&compat_frame->info, info);
- DBG(1,"SETUP_RT_FRAME: 1\n");
- compat_val = (compat_int_t)current->sas_ss_sp;
- err |= __put_user(compat_val, &compat_frame->uc.uc_stack.ss_sp);
- DBG(1,"SETUP_RT_FRAME: 2\n");
- compat_val = (compat_int_t)current->sas_ss_size;
- err |= __put_user(compat_val, &compat_frame->uc.uc_stack.ss_size);
- DBG(1,"SETUP_RT_FRAME: 3\n");
- compat_val = sas_ss_flags(regs->gr[30]);
- err |= __put_user(compat_val, &compat_frame->uc.uc_stack.ss_flags);
+ err |= __compat_save_altstack( &compat_frame->uc.uc_stack, regs->gr[30]);
DBG(1,"setup_rt_frame: frame->uc = 0x%p\n", &compat_frame->uc);
DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &compat_frame->uc.uc_mcontext);
err |= setup_sigcontext32(&compat_frame->uc.uc_mcontext,
@@ -280,10 +272,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
{
DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &frame->info);
err |= copy_siginfo_to_user(&frame->info, info);
- err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
- err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
- err |= __put_user(sas_ss_flags(regs->gr[30]),
- &frame->uc.uc_stack.ss_flags);
+ err |= __save_altstack(&frame->uc.uc_stack, regs->gr[30]);
DBG(1,"setup_rt_frame: frame->uc = 0x%p\n", &frame->uc);
DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &frame->uc.uc_mcontext);
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, in_syscall);
diff --git a/arch/parisc/kernel/signal32.c b/arch/parisc/kernel/signal32.c
index 5dede04f2f3e..df79070c3715 100644
--- a/arch/parisc/kernel/signal32.c
+++ b/arch/parisc/kernel/signal32.c
@@ -148,41 +148,6 @@ sys32_rt_sigaction(int sig, const struct sigaction32 __user *act, struct sigacti
return ret;
}
-int
-do_sigaltstack32 (const compat_stack_t __user *uss32, compat_stack_t __user *uoss32, unsigned long sp)
-{
- compat_stack_t ss32, oss32;
- stack_t ss, oss;
- stack_t *ssp = NULL, *ossp = NULL;
- int ret;
-
- if (uss32) {
- if (copy_from_user(&ss32, uss32, sizeof ss32))
- return -EFAULT;
-
- ss.ss_sp = (void __user *)(unsigned long)ss32.ss_sp;
- ss.ss_flags = ss32.ss_flags;
- ss.ss_size = ss32.ss_size;
-
- ssp = &ss;
- }
-
- if (uoss32)
- ossp = &oss;
-
- KERNEL_SYSCALL(ret, do_sigaltstack, (const stack_t __user *)ssp, (stack_t __user *)ossp, sp);
-
- if (!ret && uoss32) {
- oss32.ss_sp = (unsigned int)(unsigned long)oss.ss_sp;
- oss32.ss_flags = oss.ss_flags;
- oss32.ss_size = oss.ss_size;
- if (copy_to_user(uoss32, &oss32, sizeof *uoss32))
- return -EFAULT;
- }
-
- return ret;
-}
-
long
restore_sigcontext32(struct compat_sigcontext __user *sc, struct compat_regfile __user * rf,
struct pt_regs *regs)
diff --git a/arch/parisc/kernel/signal32.h b/arch/parisc/kernel/signal32.h
index 08a88b5349a2..640dc3ec8f5d 100644
--- a/arch/parisc/kernel/signal32.h
+++ b/arch/parisc/kernel/signal32.h
@@ -23,12 +23,6 @@
typedef compat_uptr_t compat_sighandler_t;
-typedef struct compat_sigaltstack {
- compat_uptr_t ss_sp;
- compat_int_t ss_flags;
- compat_size_t ss_size;
-} compat_stack_t;
-
/* Most things should be clean enough to redefine this at will, if care
is taken to make libc match. */
@@ -102,8 +96,6 @@ struct compat_rt_sigframe {
void sigset_32to64(sigset_t *s64, compat_sigset_t *s32);
void sigset_64to32(compat_sigset_t *s32, sigset_t *s64);
-int do_sigaltstack32 (const compat_stack_t __user *uss32,
- compat_stack_t __user *uoss32, unsigned long sp);
long restore_sigcontext32(struct compat_sigcontext __user *sc,
struct compat_regfile __user *rf,
struct pt_regs *regs);
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 54d950b067b7..46dd6efacaaa 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -255,7 +255,7 @@
ENTRY_SAME(mremap)
ENTRY_SAME(setresuid)
ENTRY_SAME(getresuid) /* 165 */
- ENTRY_DIFF(sigaltstack_wrapper)
+ ENTRY_COMP(sigaltstack)
ENTRY_SAME(ni_syscall) /* query_module */
ENTRY_SAME(poll)
/* structs contain pointers and an in_addr... */
generated by cgit (git 2.34.1) at 2025-11-04 02:31:56 +0000