aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/boot/boot.h24
-rw-r--r--arch/i386/boot/cpucheck.c3
-rw-r--r--arch/i386/boot/edd.c6
-rw-r--r--arch/i386/boot/tty.c14
-rw-r--r--arch/i386/boot/video-vga.c17
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)
87static inline u16 fs(void) 87static inline u16 fs(void)
88{ 88{
89 u16 seg; 89 u16 seg;
90 asm("movw %%fs,%0" : "=rm" (seg)); 90 asm volatile("movw %%fs,%0" : "=rm" (seg));
91 return seg; 91 return seg;
92} 92}
93 93
@@ -98,7 +98,7 @@ static inline void set_gs(u16 seg)
98static inline u16 gs(void) 98static inline u16 gs(void)
99{ 99{
100 u16 seg; 100 u16 seg;
101 asm("movw %%gs,%0" : "=rm" (seg)); 101 asm volatile("movw %%gs,%0" : "=rm" (seg));
102 return seg; 102 return seg;
103} 103}
104 104
@@ -107,19 +107,19 @@ typedef unsigned int addr_t;
107static inline u8 rdfs8(addr_t addr) 107static inline u8 rdfs8(addr_t addr)
108{ 108{
109 u8 v; 109 u8 v;
110 asm("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr)); 110 asm volatile("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
111 return v; 111 return v;
112} 112}
113static inline u16 rdfs16(addr_t addr) 113static inline u16 rdfs16(addr_t addr)
114{ 114{
115 u16 v; 115 u16 v;
116 asm("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr)); 116 asm volatile("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
117 return v; 117 return v;
118} 118}
119static inline u32 rdfs32(addr_t addr) 119static inline u32 rdfs32(addr_t addr)
120{ 120{
121 u32 v; 121 u32 v;
122 asm("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr)); 122 asm volatile("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
123 return v; 123 return v;
124} 124}
125 125
@@ -139,19 +139,19 @@ static inline void wrfs32(u32 v, addr_t addr)
139static inline u8 rdgs8(addr_t addr) 139static inline u8 rdgs8(addr_t addr)
140{ 140{
141 u8 v; 141 u8 v;
142 asm("movb %%gs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr)); 142 asm volatile("movb %%gs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
143 return v; 143 return v;
144} 144}
145static inline u16 rdgs16(addr_t addr) 145static inline u16 rdgs16(addr_t addr)
146{ 146{
147 u16 v; 147 u16 v;
148 asm("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr)); 148 asm volatile("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
149 return v; 149 return v;
150} 150}
151static inline u32 rdgs32(addr_t addr) 151static inline u32 rdgs32(addr_t addr)
152{ 152{
153 u32 v; 153 u32 v;
154 asm("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr)); 154 asm volatile("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
155 return v; 155 return v;
156} 156}
157 157
@@ -180,15 +180,15 @@ static inline int memcmp(const void *s1, const void *s2, size_t len)
180static inline int memcmp_fs(const void *s1, addr_t s2, size_t len) 180static inline int memcmp_fs(const void *s1, addr_t s2, size_t len)
181{ 181{
182 u8 diff; 182 u8 diff;
183 asm("fs; repe; cmpsb; setnz %0" 183 asm volatile("fs; repe; cmpsb; setnz %0"
184 : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); 184 : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
185 return diff; 185 return diff;
186} 186}
187static inline int memcmp_gs(const void *s1, addr_t s2, size_t len) 187static inline int memcmp_gs(const void *s1, addr_t s2, size_t len)
188{ 188{
189 u8 diff; 189 u8 diff;
190 asm("gs; repe; cmpsb; setnz %0" 190 asm volatile("gs; repe; cmpsb; setnz %0"
191 : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len)); 191 : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
192 return diff; 192 return diff;
193} 193}
194 194
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)
96 asm volatile("movl %0,%%cr0" : : "r" (cr0)); 96 asm volatile("movl %0,%%cr0" : : "r" (cr0));
97 } 97 }
98 98
99 asm("fninit ; fnstsw %0 ; fnstcw %1" : "+m" (fsw), "+m" (fcw)); 99 asm volatile("fninit ; fnstsw %0 ; fnstcw %1"
100 : "+m" (fsw), "+m" (fcw));
100 101
101 return fsw == 0 && (fcw & 0x103f) == 0x003f; 102 return fsw == 0 && (fcw & 0x103f) == 0x003f;
102} 103}
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)
30 cx = 0x0001; /* Sector 0-0-1 */ 30 cx = 0x0001; /* Sector 0-0-1 */
31 dx = devno; 31 dx = devno;
32 bx = (size_t)buf; 32 bx = (size_t)buf;
33 asm("pushfl; stc; int $0x13; setc %%al; popfl" 33 asm volatile("pushfl; stc; int $0x13; setc %%al; popfl"
34 : "+a" (ax), "+c" (cx), "+d" (dx), "+b" (bx) 34 : "+a" (ax), "+c" (cx), "+d" (dx), "+b" (bx)
35 : : "esi", "edi", "memory"); 35 : : "esi", "edi", "memory");
36 36
37 return -(u8)ax; /* 0 or -1 */ 37 return -(u8)ax; /* 0 or -1 */
38} 38}
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)
54 u16 ax = 0x0200; 54 u16 ax = 0x0200;
55 u16 cx, dx; 55 u16 cx, dx;
56 56
57 asm("int $0x1a" 57 asm volatile("int $0x1a"
58 : "+a" (ax), "=c" (cx), "=d" (dx) 58 : "+a" (ax), "=c" (cx), "=d" (dx)
59 : : "ebx", "esi", "edi"); 59 : : "ebx", "esi", "edi");
60 60
61 return dx >> 8; 61 return dx >> 8;
62} 62}
@@ -67,7 +67,7 @@ static u8 gettime(void)
67int getchar(void) 67int getchar(void)
68{ 68{
69 u16 ax = 0; 69 u16 ax = 0;
70 asm("int $0x16" : "+a" (ax)); 70 asm volatile("int $0x16" : "+a" (ax));
71 71
72 return ax & 0xff; 72 return ax & 0xff;
73} 73}
@@ -75,9 +75,9 @@ int getchar(void)
75static int kbd_pending(void) 75static int kbd_pending(void)
76{ 76{
77 u8 pending; 77 u8 pending;
78 asm("int $0x16; setnz %0" 78 asm volatile("int $0x16; setnz %0"
79 : "=rm" (pending) 79 : "=rm" (pending)
80 : "a" (0x0100)); 80 : "a" (0x0100));
81 return pending; 81 return pending;
82} 82}
83 83
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)
47 47
48#ifdef CONFIG_VIDEO_400_HACK 48#ifdef CONFIG_VIDEO_400_HACK
49 if (adapter >= ADAPTER_VGA) { 49 if (adapter >= ADAPTER_VGA) {
50 asm(INT10 50 asm volatile(INT10
51 : : "a" (0x1202), "b" (0x0030) 51 : : "a" (0x1202), "b" (0x0030)
52 : "ecx", "edx", "esi", "edi"); 52 : "ecx", "edx", "esi", "edi");
53 } 53 }
54#endif 54#endif
55 55
56 ax = 0x0f00; 56 ax = 0x0f00;
57 asm(INT10 57 asm volatile(INT10
58 : "+a" (ax) 58 : "+a" (ax)
59 : : "ebx", "ecx", "edx", "esi", "edi"); 59 : : "ebx", "ecx", "edx", "esi", "edi");
60 60
61 mode = (u8)ax; 61 mode = (u8)ax;
62 62
@@ -73,9 +73,10 @@ static u8 vga_set_basic_mode(void)
73 mode = 3; 73 mode = 3;
74 74
75 /* Set the mode */ 75 /* Set the mode */
76 ax = mode;
76 asm volatile(INT10 77 asm volatile(INT10
77 : : "a" (mode) 78 : "+a" (ax)
78 : "ebx", "ecx", "edx", "esi", "edi"); 79 : : "ebx", "ecx", "edx", "esi", "edi");
79 do_restore = 1; 80 do_restore = 1;
80 return mode; 81 return mode;
81} 82}