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authorPaul Mundt <lethal@linux-sh.org>2007-04-27 11:25:57 +0900
committerPaul Mundt <lethal@hera.kernel.org>2007-05-07 02:11:56 +0000
commit4d5ade5b29c618e97a8988efb6967cb4dd0e2183 (patch)
tree376d71458747e23e7f5171b9914b0d516cad7c7b /include/asm-sh
parentdb62e5bd297d1f325811c5495ad23de36db0fdd4 (diff)
sh: kdump support.
This adds support for kexec based crash dumps. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh')
-rw-r--r--include/asm-sh/kexec.h42
1 files changed, 37 insertions, 5 deletions
diff --git a/include/asm-sh/kexec.h b/include/asm-sh/kexec.h
index 9d235af20cd..da36a754860 100644
--- a/include/asm-sh/kexec.h
+++ b/include/asm-sh/kexec.h
@@ -1,5 +1,8 @@
-#ifndef _SH_KEXEC_H
-#define _SH_KEXEC_H
+#ifndef __ASM_SH_KEXEC_H
+#define __ASM_SH_KEXEC_H
+
+#include <asm/ptrace.h>
+#include <asm/string.h>
/*
* KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
@@ -25,8 +28,37 @@
#define MAX_NOTE_BYTES 1024
-/* Provide a dummy definition to avoid build failures. */
static inline void crash_setup_regs(struct pt_regs *newregs,
- struct pt_regs *oldregs) { }
+ struct pt_regs *oldregs)
+{
+ if (oldregs)
+ memcpy(newregs, oldregs, sizeof(*newregs));
+ else {
+ __asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0]));
+ __asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1]));
+ __asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2]));
+ __asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3]));
+ __asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4]));
+ __asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5]));
+ __asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6]));
+ __asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7]));
+ __asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8]));
+ __asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9]));
+ __asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10]));
+ __asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11]));
+ __asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12]));
+ __asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13]));
+ __asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14]));
+ __asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15]));
+
+ __asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr));
+ __asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl));
+ __asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach));
+
+ __asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr));
+ __asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr));
-#endif /* _SH_KEXEC_H */
+ newregs->pc = (unsigned long)current_text_addr();
+ }
+}
+#endif /* __ASM_SH_KEXEC_H */