diff options
Diffstat (limited to 'arch/i386/boot')
| -rw-r--r-- | arch/i386/boot/boot.h | 24 | ||||
| -rw-r--r-- | arch/i386/boot/cpucheck.c | 3 | ||||
| -rw-r--r-- | arch/i386/boot/edd.c | 6 | ||||
| -rw-r--r-- | arch/i386/boot/tty.c | 14 | ||||
| -rw-r--r-- | arch/i386/boot/video-vga.c | 17 |
5 files changed, 33 insertions, 31 deletions
diff --git a/arch/i386/boot/boot.h b/arch/i386/boot/boot.h index dec70c9b6050..20bab9431acb 100644 --- a/arch/i386/boot/boot.h +++ b/arch/i386/boot/boot.h @@ -87,7 +87,7 @@ static inline void set_fs(u16 seg) static inline u16 fs(void) { u16 seg; - asm("movw %%fs,%0" : "=rm" (seg)); + asm volatile("movw %%fs,%0" : "=rm" (seg)); return seg; } @@ -98,7 +98,7 @@ static inline void set_gs(u16 seg) static inline u16 gs(void) { u16 seg; - asm("movw %%gs,%0" : "=rm" (seg)); + asm volatile("movw %%gs,%0" : "=rm" (seg)); return seg; } @@ -107,19 +107,19 @@ typedef unsigned int addr_t; static inline u8 rdfs8(addr_t addr) { u8 v; - asm("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr)); + asm volatile("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr)); return v; } static inline u16 rdfs16(addr_t addr) { u16 v; - asm("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr)); + asm volatile("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr)); return v; } static inline u32 rdfs32(addr_t addr) { u32 v; - asm("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr)); + asm volatile("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr)); return v; } @@ -139,19 +139,19 @@ static inline void wrfs32(u32 v, addr_t addr) static inline u8 rdgs8(addr_t addr) { u8 v; - asm("movb %%gs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr)); + asm volatile("movb %%gs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr)); return v; } static inline u16 rdgs16(addr_t addr) { u16 v; - asm("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr)); + asm volatile("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr)); return v; } static inline u32 rdgs32(addr_t addr) { u32 v; - asm("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr)); + asm volatile("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr)); return v; } @@ -180,15 +180,15 @@ static inline int memcmp(const void *s1, const void *s2, size_t len) static inline int memcmp_fs(const void *s1, addr_t s2, size_t len) { u8 diff; - asm("fs; repe; cmpsb; setnz %0" - : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); + asm volatile("fs; repe; cmpsb; setnz %0" + : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); return diff; } static inline int memcmp_gs(const void *s1, addr_t s2, size_t len) { u8 diff; - asm("gs; repe; cmpsb; setnz %0" - : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); + asm volatile("gs; repe; cmpsb; setnz %0" + : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); return diff; } diff --git a/arch/i386/boot/cpucheck.c b/arch/i386/boot/cpucheck.c index 991e8ceae1de..e655a89c5510 100644 --- a/arch/i386/boot/cpucheck.c +++ b/arch/i386/boot/cpucheck.c @@ -96,7 +96,8 @@ static int has_fpu(void) asm volatile("movl %0,%%cr0" : : "r" (cr0)); } - asm("fninit ; fnstsw %0 ; fnstcw %1" : "+m" (fsw), "+m" (fcw)); + asm volatile("fninit ; fnstsw %0 ; fnstcw %1" + : "+m" (fsw), "+m" (fcw)); return fsw == 0 && (fcw & 0x103f) == 0x003f; } diff --git a/arch/i386/boot/edd.c b/arch/i386/boot/edd.c index 82b5c846a194..bd138e442ec2 100644 --- a/arch/i386/boot/edd.c +++ b/arch/i386/boot/edd.c @@ -30,9 +30,9 @@ static int read_mbr(u8 devno, void *buf) cx = 0x0001; /* Sector 0-0-1 */ dx = devno; bx = (size_t)buf; - asm("pushfl; stc; int $0x13; setc %%al; popfl" - : "+a" (ax), "+c" (cx), "+d" (dx), "+b" (bx) - : : "esi", "edi", "memory"); + asm volatile("pushfl; stc; int $0x13; setc %%al; popfl" + : "+a" (ax), "+c" (cx), "+d" (dx), "+b" (bx) + : : "esi", "edi", "memory"); return -(u8)ax; /* 0 or -1 */ } diff --git a/arch/i386/boot/tty.c b/arch/i386/boot/tty.c index 9c668aad3515..f3f14bd26371 100644 --- a/arch/i386/boot/tty.c +++ b/arch/i386/boot/tty.c @@ -54,9 +54,9 @@ static u8 gettime(void) u16 ax = 0x0200; u16 cx, dx; - asm("int $0x1a" - : "+a" (ax), "=c" (cx), "=d" (dx) - : : "ebx", "esi", "edi"); + asm volatile("int $0x1a" + : "+a" (ax), "=c" (cx), "=d" (dx) + : : "ebx", "esi", "edi"); return dx >> 8; } @@ -67,7 +67,7 @@ static u8 gettime(void) int getchar(void) { u16 ax = 0; - asm("int $0x16" : "+a" (ax)); + asm volatile("int $0x16" : "+a" (ax)); return ax & 0xff; } @@ -75,9 +75,9 @@ int getchar(void) static int kbd_pending(void) { u8 pending; - asm("int $0x16; setnz %0" - : "=rm" (pending) - : "a" (0x0100)); + asm volatile("int $0x16; setnz %0" + : "=rm" (pending) + : "a" (0x0100)); return pending; } diff --git a/arch/i386/boot/video-vga.c b/arch/i386/boot/video-vga.c index 700d09a9c9b3..aef02f9ec0c1 100644 --- a/arch/i386/boot/video-vga.c +++ b/arch/i386/boot/video-vga.c @@ -47,16 +47,16 @@ static u8 vga_set_basic_mode(void) #ifdef CONFIG_VIDEO_400_HACK if (adapter >= ADAPTER_VGA) { - asm(INT10 - : : "a" (0x1202), "b" (0x0030) - : "ecx", "edx", "esi", "edi"); + asm volatile(INT10 + : : "a" (0x1202), "b" (0x0030) + : "ecx", "edx", "esi", "edi"); } #endif ax = 0x0f00; - asm(INT10 - : "+a" (ax) - : : "ebx", "ecx", "edx", "esi", "edi"); + asm volatile(INT10 + : "+a" (ax) + : : "ebx", "ecx", "edx", "esi", "edi"); mode = (u8)ax; @@ -73,9 +73,10 @@ static u8 vga_set_basic_mode(void) mode = 3; /* Set the mode */ + ax = mode; asm volatile(INT10 - : : "a" (mode) - : "ebx", "ecx", "edx", "esi", "edi"); + : "+a" (ax) + : : "ebx", "ecx", "edx", "esi", "edi"); do_restore = 1; return mode; } |