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-rw-r--r--arch/mips/kernel/mips-r2-to-r6-emul.c63
1 files changed, 17 insertions, 46 deletions
diff --git a/arch/mips/kernel/mips-r2-to-r6-emul.c b/arch/mips/kernel/mips-r2-to-r6-emul.c
index eb18b186e858..c50c89a978f1 100644
--- a/arch/mips/kernel/mips-r2-to-r6-emul.c
+++ b/arch/mips/kernel/mips-r2-to-r6-emul.c
@@ -1174,13 +1174,6 @@ repeat:
fpu_emul:
regs->regs[31] = r31;
regs->cp0_epc = epc;
- if (!used_math()) { /* First time FPU user. */
- preempt_disable();
- err = init_fpu();
- preempt_enable();
- set_used_math();
- }
- lose_fpu(1); /* Save FPU state for the emulator. */
err = fpu_emulator_cop1Handler(regs, &current->thread.fpu, 0,
&fault_addr);
@@ -1212,7 +1205,7 @@ fpu_emul:
case lwl_op:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
- if (!access_ok(VERIFY_READ, (void __user *)vaddr, 4)) {
+ if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@@ -1285,7 +1278,7 @@ fpu_emul:
case lwr_op:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
- if (!access_ok(VERIFY_READ, (void __user *)vaddr, 4)) {
+ if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@@ -1359,7 +1352,7 @@ fpu_emul:
case swl_op:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
- if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 4)) {
+ if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@@ -1429,7 +1422,7 @@ fpu_emul:
case swr_op:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
- if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 4)) {
+ if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@@ -1504,7 +1497,7 @@ fpu_emul:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
- if (!access_ok(VERIFY_READ, (void __user *)vaddr, 8)) {
+ if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@@ -1623,7 +1616,7 @@ fpu_emul:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
- if (!access_ok(VERIFY_READ, (void __user *)vaddr, 8)) {
+ if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@@ -1742,7 +1735,7 @@ fpu_emul:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
- if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 8)) {
+ if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@@ -1860,7 +1853,7 @@ fpu_emul:
rt = regs->regs[MIPSInst_RT(inst)];
vaddr = regs->regs[MIPSInst_RS(inst)] + MIPSInst_SIMM(inst);
- if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 8)) {
+ if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGSEGV;
break;
@@ -1977,7 +1970,7 @@ fpu_emul:
err = SIGBUS;
break;
}
- if (!access_ok(VERIFY_READ, (void __user *)vaddr, 4)) {
+ if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGBUS;
break;
@@ -2033,7 +2026,7 @@ fpu_emul:
err = SIGBUS;
break;
}
- if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 4)) {
+ if (!access_ok((void __user *)vaddr, 4)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGBUS;
break;
@@ -2096,7 +2089,7 @@ fpu_emul:
err = SIGBUS;
break;
}
- if (!access_ok(VERIFY_READ, (void __user *)vaddr, 8)) {
+ if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGBUS;
break;
@@ -2157,7 +2150,7 @@ fpu_emul:
err = SIGBUS;
break;
}
- if (!access_ok(VERIFY_WRITE, (void __user *)vaddr, 8)) {
+ if (!access_ok((void __user *)vaddr, 8)) {
current->thread.cp0_baduaddr = vaddr;
err = SIGBUS;
break;
@@ -2242,7 +2235,7 @@ fpu_emul:
#ifdef CONFIG_DEBUG_FS
-static int mipsr2_stats_show(struct seq_file *s, void *unused)
+static int mipsr2_emul_show(struct seq_file *s, void *unused)
{
seq_printf(s, "Instruction\tTotal\tBDslot\n------------------------------\n");
@@ -2308,9 +2301,9 @@ static int mipsr2_stats_show(struct seq_file *s, void *unused)
return 0;
}
-static int mipsr2_stats_clear_show(struct seq_file *s, void *unused)
+static int mipsr2_clear_show(struct seq_file *s, void *unused)
{
- mipsr2_stats_show(s, unused);
+ mipsr2_emul_show(s, unused);
__this_cpu_write((mipsr2emustats).movs, 0);
__this_cpu_write((mipsr2bdemustats).movs, 0);
@@ -2353,30 +2346,8 @@ static int mipsr2_stats_clear_show(struct seq_file *s, void *unused)
return 0;
}
-static int mipsr2_stats_open(struct inode *inode, struct file *file)
-{
- return single_open(file, mipsr2_stats_show, inode->i_private);
-}
-
-static int mipsr2_stats_clear_open(struct inode *inode, struct file *file)
-{
- return single_open(file, mipsr2_stats_clear_show, inode->i_private);
-}
-
-static const struct file_operations mipsr2_emul_fops = {
- .open = mipsr2_stats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static const struct file_operations mipsr2_clear_fops = {
- .open = mipsr2_stats_clear_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
+DEFINE_SHOW_ATTRIBUTE(mipsr2_emul);
+DEFINE_SHOW_ATTRIBUTE(mipsr2_clear);
static int __init mipsr2_init_debugfs(void)
{
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