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-rw-r--r--arch/sparc/kernel/entry.S2
-rw-r--r--arch/sparc/kernel/ptrace.c4
-rw-r--r--arch/sparc/kernel/rtrap.S11
-rw-r--r--arch/sparc/kernel/signal.c64
-rw-r--r--arch/sparc64/kernel/etrap.S7
-rw-r--r--arch/sparc64/kernel/ptrace.c12
-rw-r--r--arch/sparc64/kernel/rtrap.S1
-rw-r--r--arch/sparc64/kernel/signal.c67
-rw-r--r--arch/sparc64/kernel/signal32.c30
-rw-r--r--include/asm-sparc/psr.h1
-rw-r--r--include/asm-sparc/ptrace.h12
-rw-r--r--include/asm-sparc/signal.h8
-rw-r--r--include/asm-sparc64/psrcompat.h2
-rw-r--r--include/asm-sparc64/pstate.h1
-rw-r--r--include/asm-sparc64/ptrace.h12
-rw-r--r--include/asm-sparc64/signal.h8
-rw-r--r--include/asm-sparc64/ttable.h7
17 files changed, 135 insertions, 114 deletions
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index c2eed8f7151..1ea92e7391c 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -1398,6 +1398,8 @@ ret_from_fork:
.align 4
.globl linux_sparc_syscall
linux_sparc_syscall:
+ sethi %hi(PSR_SYSCALL), %l4
+ or %l0, %l4, %l0
/* Direct access to user regs, must faster. */
cmp %g1, NR_SYSCALLS
bgeu linux_sparc_ni_syscall
diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
index 60dfc65549d..81f3b929743 100644
--- a/arch/sparc/kernel/ptrace.c
+++ b/arch/sparc/kernel/ptrace.c
@@ -170,8 +170,8 @@ static int genregs32_set(struct task_struct *target,
switch (pos) {
case 32: /* PSR */
psr = regs->psr;
- psr &= ~PSR_ICC;
- psr |= (reg & PSR_ICC);
+ psr &= ~(PSR_ICC | PSR_SYSCALL);
+ psr |= (reg & (PSR_ICC | PSR_SYSCALL));
regs->psr = psr;
break;
case 33: /* PC */
diff --git a/arch/sparc/kernel/rtrap.S b/arch/sparc/kernel/rtrap.S
index 77ca6fd8125..ab818cdc4cc 100644
--- a/arch/sparc/kernel/rtrap.S
+++ b/arch/sparc/kernel/rtrap.S
@@ -50,8 +50,9 @@ rtrap_7win_patch5: and %g1, 0x7f, %g1
ret_trap_entry:
ret_trap_lockless_ipi:
andcc %t_psr, PSR_PS, %g0
+ sethi %hi(PSR_SYSCALL), %g1
be 1f
- nop
+ andn %t_psr, %g1, %t_psr
wr %t_psr, 0x0, %psr
b ret_trap_kernel
@@ -73,7 +74,6 @@ signal_p:
ld [%sp + STACKFRAME_SZ + PT_PSR], %t_psr
mov %l5, %o1
- mov %l6, %o2
call do_signal
add %sp, STACKFRAME_SZ, %o0 ! pt_regs ptr
@@ -81,6 +81,8 @@ signal_p:
ld [%sp + STACKFRAME_SZ + PT_PSR], %t_psr
clr %l6
ret_trap_continue:
+ sethi %hi(PSR_SYSCALL), %g1
+ andn %t_psr, %g1, %t_psr
wr %t_psr, 0x0, %psr
WRITE_PAUSE
@@ -137,8 +139,9 @@ ret_trap_userwins_ok:
LOAD_PT_PRIV(sp, t_psr, t_pc, t_npc)
or %t_pc, %t_npc, %g2
andcc %g2, 0x3, %g0
+ sethi %hi(PSR_SYSCALL), %g2
be 1f
- nop
+ andn %t_psr, %g2, %t_psr
b ret_trap_unaligned_pc
add %sp, STACKFRAME_SZ, %o0
@@ -201,6 +204,8 @@ rtrap_patch5: and %g1, 0xff, %g1
1:
LOAD_PT_ALL(sp, t_psr, t_pc, t_npc, g1)
2:
+ sethi %hi(PSR_SYSCALL), %twin_tmp1
+ andn %t_psr, %twin_tmp1, %t_psr
wr %t_psr, 0x0, %psr
WRITE_PAUSE
diff --git a/arch/sparc/kernel/signal.c b/arch/sparc/kernel/signal.c
index c80a232db6d..e85023bb8e5 100644
--- a/arch/sparc/kernel/signal.c
+++ b/arch/sparc/kernel/signal.c
@@ -178,6 +178,9 @@ static inline void do_new_sigreturn (struct pt_regs *regs)
regs->psr = (up_psr & ~(PSR_ICC | PSR_EF))
| (regs->psr & (PSR_ICC | PSR_EF));
+ /* Prevent syscall restart. */
+ pt_regs_clear_syscall(regs);
+
err |= __get_user(fpu_save, &sf->fpu_save);
if (fpu_save)
@@ -299,6 +302,9 @@ asmlinkage void do_rt_sigreturn(struct pt_regs *regs)
regs->psr = (regs->psr & ~PSR_ICC) | (psr & PSR_ICC);
+ /* Prevent syscall restart. */
+ pt_regs_clear_syscall(regs);
+
err |= __get_user(fpu_save, &sf->fpu_save);
if (fpu_save)
@@ -1008,13 +1014,13 @@ static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
* want to handle. Thus you cannot kill init even with a SIGKILL even by
* mistake.
*/
-asmlinkage void do_signal(struct pt_regs * regs, unsigned long orig_i0, int restart_syscall)
+asmlinkage void do_signal(struct pt_regs * regs, unsigned long orig_i0)
{
- siginfo_t info;
- struct sparc_deliver_cookie cookie;
struct k_sigaction ka;
- int signr;
+ int restart_syscall;
sigset_t *oldset;
+ siginfo_t info;
+ int signr;
/*
* XXX Disable svr4 signal handling until solaris emulation works.
@@ -1027,18 +1033,28 @@ asmlinkage void do_signal(struct pt_regs * regs, unsigned long orig_i0, int rest
int svr4_signal = current->personality == PER_SVR4;
#endif
- cookie.restart_syscall = restart_syscall;
- cookie.orig_i0 = orig_i0;
+ if (pt_regs_is_syscall(regs) && (regs->psr & PSR_C))
+ restart_syscall = 1;
+ else
+ restart_syscall = 0;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
- signr = get_signal_to_deliver(&info, &ka, regs, &cookie);
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+
+ /* If the debugger messes with the program counter, it clears
+ * the software "in syscall" bit, directing us to not perform
+ * a syscall restart.
+ */
+ if (restart_syscall && !pt_regs_is_syscall(regs))
+ restart_syscall = 0;
+
if (signr > 0) {
- if (cookie.restart_syscall)
- syscall_restart(cookie.orig_i0, regs, &ka.sa);
+ if (restart_syscall)
+ syscall_restart(orig_i0, regs, &ka.sa);
handle_signal(signr, &ka, &info, oldset,
regs, svr4_signal);
/* a signal was successfully delivered; the saved
@@ -1050,16 +1066,16 @@ asmlinkage void do_signal(struct pt_regs * regs, unsigned long orig_i0, int rest
clear_thread_flag(TIF_RESTORE_SIGMASK);
return;
}
- if (cookie.restart_syscall &&
+ if (restart_syscall &&
(regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
regs->u_regs[UREG_I0] == ERESTARTSYS ||
regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
/* replay the system call when we are done */
- regs->u_regs[UREG_I0] = cookie.orig_i0;
+ regs->u_regs[UREG_I0] = orig_i0;
regs->pc -= 4;
regs->npc -= 4;
}
- if (cookie.restart_syscall &&
+ if (restart_syscall &&
regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
regs->u_regs[UREG_G1] = __NR_restart_syscall;
regs->pc -= 4;
@@ -1111,27 +1127,3 @@ do_sys_sigstack(struct sigstack __user *ssptr, struct sigstack __user *ossptr,
out:
return ret;
}
-
-void ptrace_signal_deliver(struct pt_regs *regs, void *cookie)
-{
- struct sparc_deliver_cookie *cp = cookie;
-
- if (cp->restart_syscall &&
- (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
- regs->u_regs[UREG_I0] == ERESTARTSYS ||
- regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
- /* replay the system call when we are done */
- regs->u_regs[UREG_I0] = cp->orig_i0;
- regs->pc -= 4;
- regs->npc -= 4;
- cp->restart_syscall = 0;
- }
-
- if (cp->restart_syscall &&
- regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
- regs->u_regs[UREG_G1] = __NR_restart_syscall;
- regs->pc -= 4;
- regs->npc -= 4;
- cp->restart_syscall = 0;
- }
-}
diff --git a/arch/sparc64/kernel/etrap.S b/arch/sparc64/kernel/etrap.S
index 4b2bf9eb447..b087e977bc5 100644
--- a/arch/sparc64/kernel/etrap.S
+++ b/arch/sparc64/kernel/etrap.S
@@ -27,11 +27,12 @@
.text
.align 64
- .globl etrap, etrap_irq, etraptl1
+ .globl etrap_syscall, etrap, etrap_irq, etraptl1
etrap: rdpr %pil, %g2
-etrap_irq:
- TRAP_LOAD_THREAD_REG(%g6, %g1)
+etrap_irq: clr %g3
+etrap_syscall: TRAP_LOAD_THREAD_REG(%g6, %g1)
rdpr %tstate, %g1
+ or %g1, %g3, %g1
sllx %g2, 20, %g3
andcc %g1, TSTATE_PRIV, %g0
or %g1, %g3, %g1
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index b803fe9b2c8..f6c9fc92921 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -287,11 +287,11 @@ static int genregs64_set(struct task_struct *target,
32 * sizeof(u64),
33 * sizeof(u64));
if (!ret) {
- /* Only the condition codes can be modified
- * in the %tstate register.
+ /* Only the condition codes and the "in syscall"
+ * state can be modified in the %tstate register.
*/
- tstate &= (TSTATE_ICC | TSTATE_XCC);
- regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC);
+ tstate &= (TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
+ regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
regs->tstate |= tstate;
}
}
@@ -657,8 +657,10 @@ static int genregs32_set(struct task_struct *target,
switch (pos) {
case 32: /* PSR */
tstate = regs->tstate;
- tstate &= ~(TSTATE_ICC | TSTATE_XCC);
+ tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
tstate |= psr_to_tstate_icc(reg);
+ if (reg & PSR_SYSCALL)
+ tstate |= TSTATE_SYSCALL;
regs->tstate = tstate;
break;
case 33: /* PC */
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index 079d18a11d2..5bfa79dcdd3 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -270,6 +270,7 @@ rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
wr %o3, %g0, %y
wrpr %l4, 0x0, %pil
wrpr %g0, 0x1, %tl
+ andn %l1, TSTATE_SYSCALL, %l1
wrpr %l1, %g0, %tstate
wrpr %l2, %g0, %tpc
wrpr %o2, %g0, %tnpc
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index 01b6f1821e3..ec016cb7197 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch/sparc64/kernel/signal.c
@@ -336,6 +336,9 @@ void do_rt_sigreturn(struct pt_regs *regs)
regs->tpc = tpc;
regs->tnpc = tnpc;
+ /* Prevent syscall restart. */
+ pt_regs_clear_syscall(regs);
+
sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
current->blocked = set;
@@ -500,7 +503,7 @@ static inline void handle_signal(unsigned long signr, struct k_sigaction *ka,
}
static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
- struct sigaction *sa)
+ struct sigaction *sa)
{
switch (regs->u_regs[UREG_I0]) {
case ERESTART_RESTARTBLOCK:
@@ -524,16 +527,19 @@ static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
* want to handle. Thus you cannot kill init even with a SIGKILL even by
* mistake.
*/
-static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_syscall)
+static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int __ignored)
{
- siginfo_t info;
- struct signal_deliver_cookie cookie;
struct k_sigaction ka;
- int signr;
+ int restart_syscall;
sigset_t *oldset;
+ siginfo_t info;
+ int signr;
- cookie.restart_syscall = restart_syscall;
- cookie.orig_i0 = orig_i0;
+ if (pt_regs_is_syscall(regs) &&
+ (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY))) {
+ restart_syscall = 1;
+ } else
+ restart_syscall = 0;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask;
@@ -543,16 +549,24 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_s
#ifdef CONFIG_SPARC32_COMPAT
if (test_thread_flag(TIF_32BIT)) {
extern void do_signal32(sigset_t *, struct pt_regs *,
- unsigned long, int);
- do_signal32(oldset, regs, orig_i0,
- cookie.restart_syscall);
+ int restart_syscall,
+ unsigned long orig_i0);
+ do_signal32(oldset, regs, restart_syscall, orig_i0);
return;
}
#endif
- signr = get_signal_to_deliver(&info, &ka, regs, &cookie);
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+
+ /* If the debugger messes with the program counter, it clears
+ * the software "in syscall" bit, directing us to not perform
+ * a syscall restart.
+ */
+ if (restart_syscall && !pt_regs_is_syscall(regs))
+ restart_syscall = 0;
+
if (signr > 0) {
- if (cookie.restart_syscall)
+ if (restart_syscall)
syscall_restart(orig_i0, regs, &ka.sa);
handle_signal(signr, &ka, &info, oldset, regs);
@@ -565,16 +579,16 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0, int restart_s
clear_thread_flag(TIF_RESTORE_SIGMASK);
return;
}
- if (cookie.restart_syscall &&
+ if (restart_syscall &&
(regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
regs->u_regs[UREG_I0] == ERESTARTSYS ||
regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
/* replay the system call when we are done */
- regs->u_regs[UREG_I0] = cookie.orig_i0;
+ regs->u_regs[UREG_I0] = orig_i0;
regs->tpc -= 4;
regs->tnpc -= 4;
}
- if (cookie.restart_syscall &&
+ if (restart_syscall &&
regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
regs->u_regs[UREG_G1] = __NR_restart_syscall;
regs->tpc -= 4;
@@ -596,26 +610,3 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, int restart_s
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
do_signal(regs, orig_i0, restart_syscall);
}
-
-void ptrace_signal_deliver(struct pt_regs *regs, void *cookie)
-{
- struct signal_deliver_cookie *cp = cookie;
-
- if (cp->restart_syscall &&
- (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
- regs->u_regs[UREG_I0] == ERESTARTSYS ||
- regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
- /* replay the system call when we are done */
- regs->u_regs[UREG_I0] = cp->orig_i0;
- regs->tpc -= 4;
- regs->tnpc -= 4;
- cp->restart_syscall = 0;
- }
- if (cp->restart_syscall &&
- regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
- regs->u_regs[UREG_G1] = __NR_restart_syscall;
- regs->tpc -= 4;
- regs->tnpc -= 4;
- cp->restart_syscall = 0;
- }
-}
diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c
index c55b67c614b..c1b06e2e580 100644
--- a/arch/sparc64/kernel/signal32.c
+++ b/arch/sparc64/kernel/signal32.c
@@ -295,6 +295,9 @@ void do_new_sigreturn32(struct pt_regs *regs)
regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
regs->tstate |= psr_to_tstate_icc(psr);
+ /* Prevent syscall restart. */
+ pt_regs_clear_syscall(regs);
+
err |= __get_user(fpu_save, &sf->fpu_save);
if (fpu_save)
err |= restore_fpu_state32(regs, &sf->fpu_state);
@@ -448,6 +451,9 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
regs->tstate &= ~(TSTATE_ICC|TSTATE_XCC);
regs->tstate |= psr_to_tstate_icc(psr);
+ /* Prevent syscall restart. */
+ pt_regs_clear_syscall(regs);
+
err |= __get_user(fpu_save, &sf->fpu_save);
if (fpu_save)
err |= restore_fpu_state32(regs, &sf->fpu_state);
@@ -1280,20 +1286,24 @@ static inline void syscall_restart32(unsigned long orig_i0, struct pt_regs *regs
* mistake.
*/
void do_signal32(sigset_t *oldset, struct pt_regs * regs,
- unsigned long orig_i0, int restart_syscall)
+ int restart_syscall, unsigned long orig_i0)
{
- siginfo_t info;
- struct signal_deliver_cookie cookie;
struct k_sigaction ka;
+ siginfo_t info;
int signr;
int svr4_signal = current->personality == PER_SVR4;
- cookie.restart_syscall = restart_syscall;
- cookie.orig_i0 = orig_i0;
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+
+ /* If the debugger messes with the program counter, it clears
+ * the "in syscall" bit, directing us to not perform a syscall
+ * restart.
+ */
+ if (restart_syscall && !pt_regs_is_syscall(regs))
+ restart_syscall = 0;
- signr = get_signal_to_deliver(&info, &ka, regs, &cookie);
if (signr > 0) {
- if (cookie.restart_syscall)
+ if (restart_syscall)
syscall_restart32(orig_i0, regs, &ka.sa);
handle_signal32(signr, &ka, &info, oldset,
regs, svr4_signal);
@@ -1307,16 +1317,16 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
clear_thread_flag(TIF_RESTORE_SIGMASK);
return;
}
- if (cookie.restart_syscall &&
+ if (restart_syscall &&
(regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
regs->u_regs[UREG_I0] == ERESTARTSYS ||
regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
/* replay the system call when we are done */
- regs->u_regs[UREG_I0] = cookie.orig_i0;
+ regs->u_regs[UREG_I0] = orig_i0;
regs->tpc -= 4;
regs->tnpc -= 4;
}
- if (cookie.restart_syscall &&
+ if (restart_syscall &&
regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
regs->u_regs[UREG_G1] = __NR_restart_syscall;
regs->tpc -= 4;
diff --git a/include/asm-sparc/psr.h b/include/asm-sparc/psr.h
index 19c97805111..213970477a2 100644
--- a/include/asm-sparc/psr.h
+++ b/include/asm-sparc/psr.h
@@ -25,6 +25,7 @@
#define PSR_PIL 0x00000f00 /* processor interrupt level */
#define PSR_EF 0x00001000 /* enable floating point */
#define PSR_EC 0x00002000 /* enable co-processor */
+#define PSR_SYSCALL 0x00004000 /* inside of a syscall */
#define PSR_LE 0x00008000 /* SuperSparcII little-endian */
#define PSR_ICC 0x00f00000 /* integer condition codes */
#define PSR_C 0x00100000 /* carry bit */
diff --git a/include/asm-sparc/ptrace.h b/include/asm-sparc/ptrace.h
index c25334234a6..0afb867d6c1 100644
--- a/include/asm-sparc/ptrace.h
+++ b/include/asm-sparc/ptrace.h
@@ -10,6 +10,8 @@
#ifndef __ASSEMBLY__
+#include <linux/types.h>
+
struct pt_regs {
unsigned long psr;
unsigned long pc;
@@ -39,6 +41,16 @@ struct pt_regs {
#define UREG_FP UREG_I6
#define UREG_RETPC UREG_I7
+static inline bool pt_regs_is_syscall(struct pt_regs *regs)
+{
+ return (regs->psr & PSR_SYSCALL);
+}
+
+static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
+{
+ return (regs->psr &= ~PSR_SYSCALL);
+}
+
/* A register window */
struct reg_window {
unsigned long locals[8];
diff --git a/include/asm-sparc/signal.h b/include/asm-sparc/signal.h
index d03a21c97ab..94071c75701 100644
--- a/include/asm-sparc/signal.h
+++ b/include/asm-sparc/signal.h
@@ -199,13 +199,7 @@ typedef struct sigaltstack {
size_t ss_size;
} stack_t;
-struct sparc_deliver_cookie {
- int restart_syscall;
- unsigned long orig_i0;
-};
-
-struct pt_regs;
-extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
+#define ptrace_signal_deliver(regs, cookie) do { } while (0)
#endif /* !(__KERNEL__) */
diff --git a/include/asm-sparc64/psrcompat.h b/include/asm-sparc64/psrcompat.h
index 5590ce6bd07..3614ca04753 100644
--- a/include/asm-sparc64/psrcompat.h
+++ b/include/asm-sparc64/psrcompat.h
@@ -12,6 +12,7 @@
#define PSR_PIL 0x00000f00 /* processor interrupt level */
#define PSR_EF 0x00001000 /* enable floating point */
#define PSR_EC 0x00002000 /* enable co-processor */
+#define PSR_SYSCALL 0x00004000 /* inside of a syscall */
#define PSR_LE 0x00008000 /* SuperSparcII little-endian */
#define PSR_ICC 0x00f00000 /* integer condition codes */
#define PSR_C 0x00100000 /* carry bit */
@@ -30,6 +31,7 @@ static inline unsigned int tstate_to_psr(unsigned long tstate)
PSR_S |
((tstate & TSTATE_ICC) >> 12) |
((tstate & TSTATE_XCC) >> 20) |
+ ((tstate & TSTATE_SYSCALL) ? PSR_SYSCALL : 0) |
PSR_V8PLUS);
}
diff --git a/include/asm-sparc64/pstate.h b/include/asm-sparc64/pstate.h
index f3c45484c63..949aebaf991 100644
--- a/include/asm-sparc64/pstate.h
+++ b/include/asm-sparc64/pstate.h
@@ -62,6 +62,7 @@
#define TSTATE_PRIV _AC(0x0000000000000400,UL) /* Privilege. */
#define TSTATE_IE _AC(0x0000000000000200,UL) /* Interrupt Enable. */
#define TSTATE_AG _AC(0x0000000000000100,UL) /* Alternate Globals.*/
+#define TSTATE_SYSCALL _AC(0x0000000000000020,UL) /* in syscall trap */
#define TSTATE_CWP _AC(0x000000000000001f,UL) /* Curr Win-Pointer. */
/* Floating-Point Registers State Register.
diff --git a/include/asm-sparc64/ptrace.h b/include/asm-sparc64/ptrace.h
index 894273546d3..0093f60f15e 100644
--- a/include/asm-sparc64/ptrace.h
+++ b/include/asm-sparc64/ptrace.h
@@ -10,6 +10,8 @@
#ifndef __ASSEMBLY__
+#include <linux/types.h>
+
struct pt_regs {
unsigned long u_regs[16]; /* globals and ins */
unsigned long tstate;
@@ -27,6 +29,16 @@ struct pt_regs32 {
unsigned int u_regs[16]; /* globals and ins */
};
+static inline bool pt_regs_is_syscall(struct pt_regs *regs)
+{
+ return (regs->tstate & TSTATE_SYSCALL);
+}
+
+static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
+{
+ return (regs->tstate &= ~TSTATE_SYSCALL);
+}
+
#define UREG_G0 0
#define UREG_G1 1
#define UREG_G2 2
diff --git a/include/asm-sparc64/signal.h b/include/asm-sparc64/signal.h
index fa6f467389d..c49f32d3870 100644
--- a/include/asm-sparc64/signal.h
+++ b/include/asm-sparc64/signal.h
@@ -186,13 +186,7 @@ struct k_sigaction {
void __user *ka_restorer;
};
-struct signal_deliver_cookie {
- int restart_syscall;
- unsigned long orig_i0;
-};
-
-struct pt_regs;
-extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);
+#define ptrace_signal_deliver(regs, cookie) do { } while (0)
#endif /* !(__KERNEL__) */
diff --git a/include/asm-sparc64/ttable.h b/include/asm-sparc64/ttable.h
index bbb9c8f13d6..6ef3d3b62ba 100644
--- a/include/asm-sparc64/ttable.h
+++ b/include/asm-sparc64/ttable.h
@@ -91,13 +91,14 @@
clr %l6;
#define SYSCALL_TRAP(routine, systbl) \
+ rdpr %pil, %g2; \
+ mov TSTATE_SYSCALL, %g3; \
sethi %hi(109f), %g7; \
- ba,pt %xcc, etrap; \
+ ba,pt %xcc, etrap_syscall; \
109: or %g7, %lo(109b), %g7; \
sethi %hi(systbl), %l7; \
ba,pt %xcc, routine; \
- or %l7, %lo(systbl), %l7; \
- nop; nop;
+ or %l7, %lo(systbl), %l7;
#define INDIRECT_SOLARIS_SYSCALL(num) \
sethi %hi(109f), %g7; \
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-25 21:42:05 +0000