diff options
| -rw-r--r-- | arch/x86/boot/compressed/misc.c | 31 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/string.c | 33 |
2 files changed, 34 insertions, 30 deletions
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index 196eaf373a0..3100092b134 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -10,6 +10,7 @@ */ #include "misc.h" +#include "../string.h" /* WARNING!! * This code is compiled with -fPIC and it is relocated dynamically @@ -110,7 +111,6 @@ static void error(char *m); struct boot_params *real_mode; /* Pointer to real-mode data */ void *memset(void *s, int c, size_t n); -void *memcpy(void *dest, const void *src, size_t n); memptr free_mem_ptr; memptr free_mem_end_ptr; @@ -225,35 +225,6 @@ void *memset(void *s, int c, size_t n) ss[i] = c; return s; } -#ifdef CONFIG_X86_32 -void *memcpy(void *dest, const void *src, size_t n) -{ - int d0, d1, d2; - asm volatile( - "rep ; movsl\n\t" - "movl %4,%%ecx\n\t" - "rep ; movsb\n\t" - : "=&c" (d0), "=&D" (d1), "=&S" (d2) - : "0" (n >> 2), "g" (n & 3), "1" (dest), "2" (src) - : "memory"); - - return dest; -} -#else -void *memcpy(void *dest, const void *src, size_t n) -{ - long d0, d1, d2; - asm volatile( - "rep ; movsq\n\t" - "movq %4,%%rcx\n\t" - "rep ; movsb\n\t" - : "=&c" (d0), "=&D" (d1), "=&S" (d2) - : "0" (n >> 3), "g" (n & 7), "1" (dest), "2" (src) - : "memory"); - - return dest; -} -#endif static void error(char *x) { diff --git a/arch/x86/boot/compressed/string.c b/arch/x86/boot/compressed/string.c index 212004ec787..3b5a82fc6ad 100644 --- a/arch/x86/boot/compressed/string.c +++ b/arch/x86/boot/compressed/string.c @@ -11,3 +11,36 @@ int memcmp(const void *s1, const void *s2, size_t len) } #include "../string.c" + +/* misc.h might pull in string_32.h which has a macro for memcpy. undef that */ +#undef memcpy + +#ifdef CONFIG_X86_32 +void *memcpy(void *dest, const void *src, size_t n) +{ + int d0, d1, d2; + asm volatile( + "rep ; movsl\n\t" + "movl %4,%%ecx\n\t" + "rep ; movsb\n\t" + : "=&c" (d0), "=&D" (d1), "=&S" (d2) + : "0" (n >> 2), "g" (n & 3), "1" (dest), "2" (src) + : "memory"); + + return dest; +} +#else +void *memcpy(void *dest, const void *src, size_t n) +{ + long d0, d1, d2; + asm volatile( + "rep ; movsq\n\t" + "movq %4,%%rcx\n\t" + "rep ; movsb\n\t" + : "=&c" (d0), "=&D" (d1), "=&S" (d2) + : "0" (n >> 3), "g" (n & 7), "1" (dest), "2" (src) + : "memory"); + + return dest; +} +#endif |