@@ -20,7 +20,7 @@
#define PSW32_MASK_CC 0x00003000UL
#define PSW32_MASK_PM 0x00000f00UL
-#define PSW32_MASK_USER 0x00003F00UL
+#define PSW32_MASK_USER 0x0000FF00UL
#define PSW32_ADDR_AMODE 0x80000000UL
#define PSW32_ADDR_INSN 0x7FFFFFFFUL
@@ -240,7 +240,7 @@ typedef struct
#define PSW_MASK_EA 0x00000000UL
#define PSW_MASK_BA 0x00000000UL
-#define PSW_MASK_USER 0x00003F00UL
+#define PSW_MASK_USER 0x0000FF00UL
#define PSW_ADDR_AMODE 0x80000000UL
#define PSW_ADDR_INSN 0x7FFFFFFFUL
@@ -269,7 +269,7 @@ typedef struct
#define PSW_MASK_EA 0x0000000100000000UL
#define PSW_MASK_BA 0x0000000080000000UL
-#define PSW_MASK_USER 0x00003F0180000000UL
+#define PSW_MASK_USER 0x0000FF0180000000UL
#define PSW_ADDR_AMODE 0x0000000000000000UL
#define PSW_ADDR_INSN 0xFFFFFFFFFFFFFFFFUL
@@ -311,6 +311,10 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs)
regs->psw.mask = (regs->psw.mask & ~PSW_MASK_USER) |
(__u64)(regs32.psw.mask & PSW32_MASK_USER) << 32 |
(__u64)(regs32.psw.addr & PSW32_ADDR_AMODE);
+ /* Check for invalid user address space control. */
+ if ((regs->psw.mask & PSW_MASK_ASC) >= (psw_kernel_bits & PSW_MASK_ASC))
+ regs->psw.mask = (psw_user_bits & PSW_MASK_ASC) |
+ (regs->psw.mask & ~PSW_MASK_ASC);
regs->psw.addr = (__u64)(regs32.psw.addr & PSW32_ADDR_INSN);
for (i = 0; i < NUM_GPRS; i++)
regs->gprs[i] = (__u64) regs32.gprs[i];
@@ -483,7 +487,10 @@ static int setup_frame32(int sig, struct k_sigaction *ka,
/* Set up registers for signal handler */
regs->gprs[15] = (__force __u64) frame;
- regs->psw.mask |= PSW_MASK_BA; /* force amode 31 */
+ /* Force 31 bit amode and default user address space control. */
+ regs->psw.mask = PSW_MASK_BA |
+ (psw_user_bits & PSW_MASK_ASC) |
+ (regs->psw.mask & ~PSW_MASK_ASC);
regs->psw.addr = (__force __u64) ka->sa.sa_handler;
regs->gprs[2] = map_signal(sig);
@@ -551,7 +558,10 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info,
/* Set up registers for signal handler */
regs->gprs[15] = (__force __u64) frame;
- regs->psw.mask |= PSW_MASK_BA; /* force amode 31 */
+ /* Force 31 bit amode and default user address space control. */
+ regs->psw.mask = PSW_MASK_BA |
+ (psw_user_bits & PSW_MASK_ASC) |
+ (regs->psw.mask & ~PSW_MASK_ASC);
regs->psw.addr = (__u64) ka->sa.sa_handler;
regs->gprs[2] = map_signal(sig);
@@ -138,6 +138,10 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
/* Use regs->psw.mask instead of psw_user_bits to preserve PER bit. */
regs->psw.mask = (regs->psw.mask & ~PSW_MASK_USER) |
(user_sregs.regs.psw.mask & PSW_MASK_USER);
+ /* Check for invalid user address space control. */
+ if ((regs->psw.mask & PSW_MASK_ASC) >= (psw_kernel_bits & PSW_MASK_ASC))
+ regs->psw.mask = (psw_user_bits & PSW_MASK_ASC) |
+ (regs->psw.mask & ~PSW_MASK_ASC);
/* Check for invalid amode */
if (regs->psw.mask & PSW_MASK_EA)
regs->psw.mask |= PSW_MASK_BA;
@@ -275,7 +279,10 @@ static int setup_frame(int sig, struct k_sigaction *ka,
/* Set up registers for signal handler */
regs->gprs[15] = (unsigned long) frame;
- regs->psw.mask |= PSW_MASK_EA | PSW_MASK_BA; /* 64 bit amode */
+ /* Force default amode and default user address space control. */
+ regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
+ (psw_user_bits & PSW_MASK_ASC) |
+ (regs->psw.mask & ~PSW_MASK_ASC);
regs->psw.addr = (unsigned long) ka->sa.sa_handler | PSW_ADDR_AMODE;
regs->gprs[2] = map_signal(sig);
@@ -348,7 +355,10 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
/* Set up registers for signal handler */
regs->gprs[15] = (unsigned long) frame;
- regs->psw.mask |= PSW_MASK_EA | PSW_MASK_BA; /* 64 bit amode */
+ /* Force default amode and default user address space control. */
+ regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
+ (psw_user_bits & PSW_MASK_ASC) |
+ (regs->psw.mask & ~PSW_MASK_ASC);
regs->psw.addr = (unsigned long) ka->sa.sa_handler | PSW_ADDR_AMODE;
regs->gprs[2] = map_signal(sig);