summaryrefslogtreecommitdiff
path: root/arch/x86/include/asm/trampoline.h
diff options
context:
space:
mode:
authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/x86/include/asm/trampoline.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
downloadFOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/x86/include/asm/trampoline.h')
-rw-r--r--arch/x86/include/asm/trampoline.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/x86/include/asm/trampoline.h b/arch/x86/include/asm/trampoline.h
new file mode 100644
index 00000000..feca3118
--- /dev/null
+++ b/arch/x86/include/asm/trampoline.h
@@ -0,0 +1,39 @@
+#ifndef _ASM_X86_TRAMPOLINE_H
+#define _ASM_X86_TRAMPOLINE_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+#include <asm/io.h>
+
+/*
+ * Trampoline 80x86 program as an array. These are in the init rodata
+ * segment, but that's okay, because we only care about the relative
+ * addresses of the symbols.
+ */
+extern const unsigned char x86_trampoline_start [];
+extern const unsigned char x86_trampoline_end [];
+extern unsigned char *x86_trampoline_base;
+
+extern unsigned long init_rsp;
+extern unsigned long initial_code;
+extern unsigned long initial_gs;
+
+extern void __init setup_trampolines(void);
+
+extern const unsigned char trampoline_data[];
+extern const unsigned char trampoline_status[];
+
+#define TRAMPOLINE_SYM(x) \
+ ((void *)(x86_trampoline_base + \
+ ((const unsigned char *)(x) - x86_trampoline_start)))
+
+/* Address of the SMP trampoline */
+static inline unsigned long trampoline_address(void)
+{
+ return virt_to_phys(TRAMPOLINE_SYM(trampoline_data));
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_X86_TRAMPOLINE_H */