1 #ifndef _ASM_X86_TRAMPOLINE_H 2 #define _ASM_X86_TRAMPOLINE_H 3 4 #ifndef __ASSEMBLY__ 5 6 #include <linux/types.h> 7 #include <asm/io.h> 8 9 /* 10 * Trampoline 80x86 program as an array. These are in the init rodata 11 * segment, but that's okay, because we only care about the relative 12 * addresses of the symbols. 13 */ 14 extern const unsigned char x86_trampoline_start []; 15 extern const unsigned char x86_trampoline_end []; 16 extern unsigned char *x86_trampoline_base; 17 18 extern unsigned long init_rsp; 19 extern unsigned long initial_code; 20 extern unsigned long initial_gs; 21 22 extern void __init setup_trampolines(void); 23 24 extern const unsigned char trampoline_data[]; 25 extern const unsigned char trampoline_status[]; 26 27 #define TRAMPOLINE_SYM(x) \ 28 ((void *)(x86_trampoline_base + \ 29 ((const unsigned char *)(x) - x86_trampoline_start))) 30 31 /* Address of the SMP trampoline */ trampoline_address(void)32static inline unsigned long trampoline_address(void) 33 { 34 return virt_to_phys(TRAMPOLINE_SYM(trampoline_data)); 35 } 36 37 #endif /* __ASSEMBLY__ */ 38 39 #endif /* _ASM_X86_TRAMPOLINE_H */ 40