Pull acpi_bus_register_driver into release branch

[linux-2.6-omap-h63xx.git] / arch / i386 / kernel / kprobes.c

diff --git a/arch/i386/kernel/kprobes.c b/arch/i386/kernel/kprobes.c
index f19768789e8a607203023d7ba3788efbc7bc3c1b..38806f427849f7f4dc8c76891229f952791064c3 100644 (file)
--- a/arch/i386/kernel/kprobes.c
+++ b/arch/i386/kernel/kprobes.c
@@ -43,7 +43,7 @@ DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
 DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
 
 /* insert a jmp code */
-static inline void set_jmp_op(void *from, void *to)
+static __always_inline void set_jmp_op(void *from, void *to)
 {
        struct __arch_jmp_op {
                char op;
@@ -57,7 +57,7 @@ static inline void set_jmp_op(void *from, void *to)
 /*
  * returns non-zero if opcodes can be boosted.
  */
-static inline int can_boost(kprobe_opcode_t opcode)
+static __always_inline int can_boost(kprobe_opcode_t opcode)
 {
        switch (opcode & 0xf0 ) {
        case 0x70:
@@ -88,7 +88,7 @@ static inline int can_boost(kprobe_opcode_t opcode)
 /*
  * returns non-zero if opcode modifies the interrupt flag.
  */
-static inline int is_IF_modifier(kprobe_opcode_t opcode)
+static int __kprobes is_IF_modifier(kprobe_opcode_t opcode)
 {
        switch (opcode) {
        case 0xfa:              /* cli */
@@ -138,7 +138,7 @@ void __kprobes arch_remove_kprobe(struct kprobe *p)
        mutex_unlock(&kprobe_mutex);
 }
 
-static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
+static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
 {
        kcb->prev_kprobe.kp = kprobe_running();
        kcb->prev_kprobe.status = kcb->kprobe_status;
@@ -146,7 +146,7 @@ static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
        kcb->prev_kprobe.saved_eflags = kcb->kprobe_saved_eflags;
 }
 
-static inline void restore_previous_kprobe(struct kprobe_ctlblk *kcb)
+static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
 {
        __get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp;
        kcb->kprobe_status = kcb->prev_kprobe.status;
@@ -154,7 +154,7 @@ static inline void restore_previous_kprobe(struct kprobe_ctlblk *kcb)
        kcb->kprobe_saved_eflags = kcb->prev_kprobe.saved_eflags;
 }
 
-static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
+static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
                                struct kprobe_ctlblk *kcb)
 {
        __get_cpu_var(current_kprobe) = p;
@@ -164,7 +164,7 @@ static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
                kcb->kprobe_saved_eflags &= ~IF_MASK;
 }
 
-static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
+static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
 {
        regs->eflags |= TF_MASK;
        regs->eflags &= ~IF_MASK;
@@ -242,10 +242,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
                        kcb->kprobe_status = KPROBE_REENTER;
                        return 1;
                } else {
-                       if (regs->eflags & VM_MASK) {
-                       /* We are in virtual-8086 mode. Return 0 */
-                               goto no_kprobe;
-                       }
                        if (*addr != BREAKPOINT_INSTRUCTION) {
                        /* The breakpoint instruction was removed by
                         * another cpu right after we hit, no further
@@ -265,11 +261,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
 
        p = get_kprobe(addr);
        if (!p) {
-               if (regs->eflags & VM_MASK) {
-                       /* We are in virtual-8086 mode. Return 0 */
-                       goto no_kprobe;
-               }
-
                if (*addr != BREAKPOINT_INSTRUCTION) {
                        /*
                         * The breakpoint instruction was removed right
@@ -452,10 +443,11 @@ static void __kprobes resume_execution(struct kprobe *p,
                *tos &= ~(TF_MASK | IF_MASK);
                *tos |= kcb->kprobe_old_eflags;
                break;
-       case 0xc3:              /* ret/lret */
-       case 0xcb:
-       case 0xc2:
+       case 0xc2:              /* iret/ret/lret */
+       case 0xc3:
        case 0xca:
+       case 0xcb:
+       case 0xcf:
        case 0xea:              /* jmp absolute -- eip is correct */
                /* eip is already adjusted, no more changes required */
                p->ainsn.boostable = 1;
@@ -463,10 +455,13 @@ static void __kprobes resume_execution(struct kprobe *p,
        case 0xe8:              /* call relative - Fix return addr */
                *tos = orig_eip + (*tos - copy_eip);
                break;
+       case 0x9a:              /* call absolute -- same as call absolute, indirect */
+               *tos = orig_eip + (*tos - copy_eip);
+               goto no_change;
        case 0xff:
                if ((p->ainsn.insn[1] & 0x30) == 0x10) {
-                       /* call absolute, indirect */
                        /*
+                        * call absolute, indirect
                         * Fix return addr; eip is correct.
                         * But this is not boostable
                         */
@@ -507,7 +502,7 @@ no_change:
  * Interrupts are disabled on entry as trap1 is an interrupt gate and they
  * remain disabled thoroughout this function.
  */
-static inline int post_kprobe_handler(struct pt_regs *regs)
+static int __kprobes post_kprobe_handler(struct pt_regs *regs)
 {
        struct kprobe *cur = kprobe_running();
        struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
@@ -543,7 +538,7 @@ out:
        return 1;
 }
 
-static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+static int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
 {
        struct kprobe *cur = kprobe_running();
        struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();