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-rw-r--r--arch/um/include/registers.h12
-rw-r--r--arch/um/include/sysdep-x86_64/ptrace.h4
-rw-r--r--arch/um/kernel/sysrq.c8
-rw-r--r--arch/um/os-Linux/sys-i386/registers.c19
-rw-r--r--arch/um/os-Linux/sys-x86_64/registers.c19
-rw-r--r--arch/um/sys-i386/sysrq.c13
-rw-r--r--include/asm-um/processor-generic.h23
-rw-r--r--include/asm-um/processor-i386.h15
-rw-r--r--include/asm-um/processor-x86_64.h14
9 files changed, 38 insertions, 89 deletions
diff --git a/arch/um/include/registers.h b/arch/um/include/registers.h
index 0a35e6d0baa0..4892e5fcef07 100644
--- a/arch/um/include/registers.h
+++ b/arch/um/include/registers.h
@@ -15,16 +15,6 @@ extern void save_registers(int pid, union uml_pt_regs *regs);
extern void restore_registers(int pid, union uml_pt_regs *regs);
extern void init_registers(int pid);
extern void get_safe_registers(unsigned long * regs);
+extern void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer);
#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h
index 331aa2d1f3f5..8f0656766c21 100644
--- a/arch/um/include/sysdep-x86_64/ptrace.h
+++ b/arch/um/include/sysdep-x86_64/ptrace.h
@@ -218,10 +218,6 @@ struct syscall_args {
case RBP: UPT_RBP(regs) = __upt_val; break; \
case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \
case CS: UPT_CS(regs) = __upt_val; break; \
- case DS: UPT_DS(regs) = __upt_val; break; \
- case ES: UPT_ES(regs) = __upt_val; break; \
- case FS: UPT_FS(regs) = __upt_val; break; \
- case GS: UPT_GS(regs) = __upt_val; break; \
case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \
default : \
panic("Bad register in UPT_SET : %d\n", reg); \
diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
index f80850091e79..b331e970002f 100644
--- a/arch/um/kernel/sysrq.c
+++ b/arch/um/kernel/sysrq.c
@@ -62,13 +62,7 @@ void show_stack(struct task_struct *task, unsigned long *esp)
if (esp == NULL) {
if (task != current && task != NULL) {
- /* XXX: Isn't this bogus? I.e. isn't this the
- * *userspace* stack of this task? If not so, use this
- * even when task == current (as in i386).
- */
esp = (unsigned long *) KSTK_ESP(task);
- /* Which one? No actual difference - just coding style.*/
- //esp = (unsigned long *) PT_REGS_IP(&task->thread.regs);
} else {
esp = (unsigned long *) &esp;
}
@@ -84,5 +78,5 @@ void show_stack(struct task_struct *task, unsigned long *esp)
}
printk("Call Trace: \n");
- show_trace(current, esp);
+ show_trace(task, esp);
}
diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c
index 3125d320722c..aee4812333c6 100644
--- a/arch/um/os-Linux/sys-i386/registers.c
+++ b/arch/um/os-Linux/sys-i386/registers.c
@@ -5,6 +5,7 @@
#include <errno.h>
#include <string.h>
+#include <setjmp.h>
#include "sysdep/ptrace_user.h"
#include "sysdep/ptrace.h"
#include "uml-config.h"
@@ -126,13 +127,11 @@ void get_safe_registers(unsigned long *regs)
memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long));
}
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
+{
+ struct __jmp_buf_tag *jmpbuf = buffer;
+
+ UPT_SET(uml_regs, EIP, jmpbuf->__jmpbuf[JB_PC]);
+ UPT_SET(uml_regs, UESP, jmpbuf->__jmpbuf[JB_SP]);
+ UPT_SET(uml_regs, EBP, jmpbuf->__jmpbuf[JB_BP]);
+}
diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c
index 44438d15c3d6..4b638dfb52b0 100644
--- a/arch/um/os-Linux/sys-x86_64/registers.c
+++ b/arch/um/os-Linux/sys-x86_64/registers.c
@@ -5,6 +5,7 @@
#include <errno.h>
#include <string.h>
+#include <setjmp.h>
#include "ptrace_user.h"
#include "uml-config.h"
#include "skas_ptregs.h"
@@ -74,13 +75,11 @@ void get_safe_registers(unsigned long *regs)
memcpy(regs, exec_regs, HOST_FRAME_SIZE * sizeof(unsigned long));
}
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+void get_thread_regs(union uml_pt_regs *uml_regs, void *buffer)
+{
+ struct __jmp_buf_tag *jmpbuf = buffer;
+
+ UPT_SET(uml_regs, RIP, jmpbuf->__jmpbuf[JB_PC]);
+ UPT_SET(uml_regs, RSP, jmpbuf->__jmpbuf[JB_RSP]);
+ UPT_SET(uml_regs, RBP, jmpbuf->__jmpbuf[JB_RBP]);
+}
diff --git a/arch/um/sys-i386/sysrq.c b/arch/um/sys-i386/sysrq.c
index e3706d15c4f5..d5244f070539 100644
--- a/arch/um/sys-i386/sysrq.c
+++ b/arch/um/sys-i386/sysrq.c
@@ -88,9 +88,7 @@ void show_trace(struct task_struct* task, unsigned long * stack)
task = current;
if (task != current) {
- //ebp = (unsigned long) KSTK_EBP(task);
- /* Which one? No actual difference - just coding style.*/
- ebp = (unsigned long) PT_REGS_EBP(&task->thread.regs);
+ ebp = (unsigned long) KSTK_EBP(task);
} else {
asm ("movl %%ebp, %0" : "=r" (ebp) : );
}
@@ -99,15 +97,6 @@ void show_trace(struct task_struct* task, unsigned long * stack)
((unsigned long)stack & (~(THREAD_SIZE - 1)));
print_context_stack(context, stack, ebp);
- /*while (((long) stack & (THREAD_SIZE-1)) != 0) {
- addr = *stack;
- if (__kernel_text_address(addr)) {
- printk("%08lx: [<%08lx>]", (unsigned long) stack, addr);
- print_symbol(" %s", addr);
- printk("\n");
- }
- stack++;
- }*/
printk("\n");
}
diff --git a/include/asm-um/processor-generic.h b/include/asm-um/processor-generic.h
index 2d242360c3d6..075771c371f6 100644
--- a/include/asm-um/processor-generic.h
+++ b/include/asm-um/processor-generic.h
@@ -13,6 +13,7 @@ struct task_struct;
#include "linux/config.h"
#include "asm/ptrace.h"
#include "choose-mode.h"
+#include "registers.h"
struct mm_struct;
@@ -136,19 +137,15 @@ extern struct cpuinfo_um cpu_data[];
#define current_cpu_data boot_cpu_data
#endif
-#define KSTK_EIP(tsk) (PT_REGS_IP(&tsk->thread.regs))
-#define KSTK_ESP(tsk) (PT_REGS_SP(&tsk->thread.regs))
-#define get_wchan(p) (0)
+#ifdef CONFIG_MODE_SKAS
+#define KSTK_REG(tsk, reg) \
+ ({ union uml_pt_regs regs; \
+ get_thread_regs(&regs, tsk->thread.mode.skas.switch_buf); \
+ UPT_REG(&regs, reg); })
+#else
+#define KSTK_REG(tsk, reg) (0xbadbabe)
#endif
+#define get_wchan(p) (0)
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+#endif
diff --git a/include/asm-um/processor-i386.h b/include/asm-um/processor-i386.h
index 431bad3ae9d7..4108a579eb92 100644
--- a/include/asm-um/processor-i386.h
+++ b/include/asm-um/processor-i386.h
@@ -43,17 +43,10 @@ static inline void rep_nop(void)
#define ARCH_IS_STACKGROW(address) \
(address + 32 >= UPT_SP(&current->thread.regs.regs))
+#define KSTK_EIP(tsk) KSTK_REG(tsk, EIP)
+#define KSTK_ESP(tsk) KSTK_REG(tsk, UESP)
+#define KSTK_EBP(tsk) KSTK_REG(tsk, EBP)
+
#include "asm/processor-generic.h"
#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/include/asm-um/processor-x86_64.h b/include/asm-um/processor-x86_64.h
index 0beb9a42ae05..e1e1255a1d36 100644
--- a/include/asm-um/processor-x86_64.h
+++ b/include/asm-um/processor-x86_64.h
@@ -36,17 +36,9 @@ extern inline void rep_nop(void)
#define ARCH_IS_STACKGROW(address) \
(address + 128 >= UPT_SP(&current->thread.regs.regs))
+#define KSTK_EIP(tsk) KSTK_REG(tsk, RIP)
+#define KSTK_ESP(tsk) KSTK_REG(tsk, RSP)
+
#include "asm/processor-generic.h"
#endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
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