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authorIngo Molnar <mingo@elte.hu>2008-12-31 08:31:57 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-31 08:31:57 +0100
commita9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch)
tree886e75fdfd09690cd262ca69cb7f5d1d42b48602 /arch/x86/include/asm/trampoline.h
parentb2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff)
parent6a94cb73064c952255336cc57731904174b2c58f (diff)
Merge branch 'linus' into stackprotector
Conflicts: arch/x86/include/asm/pda.h kernel/fork.c
Diffstat (limited to 'arch/x86/include/asm/trampoline.h')
-rw-r--r--arch/x86/include/asm/trampoline.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/x86/include/asm/trampoline.h b/arch/x86/include/asm/trampoline.h
new file mode 100644
index 00000000000..780ba0ab94f
--- /dev/null
+++ b/arch/x86/include/asm/trampoline.h
@@ -0,0 +1,28 @@
+#ifndef _ASM_X86_TRAMPOLINE_H
+#define _ASM_X86_TRAMPOLINE_H
+
+#ifndef __ASSEMBLY__
+
+#ifdef CONFIG_X86_TRAMPOLINE
+/*
+ * Trampoline 80x86 program as an array.
+ */
+extern const unsigned char trampoline_data [];
+extern const unsigned char trampoline_end [];
+extern unsigned char *trampoline_base;
+
+extern unsigned long init_rsp;
+extern unsigned long initial_code;
+
+#define TRAMPOLINE_SIZE roundup(trampoline_end - trampoline_data, PAGE_SIZE)
+#define TRAMPOLINE_BASE 0x6000
+
+extern unsigned long setup_trampoline(void);
+extern void __init reserve_trampoline_memory(void);
+#else
+static inline void reserve_trampoline_memory(void) {};
+#endif /* CONFIG_X86_TRAMPOLINE */
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_X86_TRAMPOLINE_H */