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Removed warnings.

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This commit is contained in:
Joel Sherrill
1999-12-03 14:01:11 +00:00
parent ad9a21ad84
commit eb17041fbb
1 changed files with 24 additions and 24 deletions
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48
c/src/lib/libcpu/i386/cpuModel.S
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@@ -142,8 +142,8 @@ isnew:
*/
is486x: xor ax,ax
sahf
movb $5,ax
movb $2,bx
movb $5,al
movb $2,bl
div bl
lahf
cmpb $2,ah
@@ -154,42 +154,42 @@ is486x: xor ax,ax
* do all this with interrupts off.
*/
#define setCx86(reg, val) \
movb reg,ax; \
outb ax,$0x22; \
movb val,ax; \
outb ax,$0x23
movb reg,al; \
outb al,$0x22; \
movb val,al; \
outb al,$0x23
#define getCx86(reg) \
movb reg,ax; \
outb ax,$0x22; \
inb $0x23,ax
movb reg,al; \
outb al,$0x22; \
inb $0x23,al
cli
getCx86($0xc3) /* get CCR3 */
movb ax,cx /* Save old value */
movb ax,bx
andb $0x0f,bx /* Enable access to all config registers */
orb $0x10,bx /* by setting bit 4 */
setCx86($0xc3,bx)
movb al,cl /* Save old value */
movb al,bl
andb $0x0f,bl /* Enable access to all config registers */
orb $0x10,bl /* by setting bit 4 */
setCx86($0xc3,bl)
getCx86($0xe8) /* now we can get CCR4 */
orb $0x80,ax /* and set bit 7 (CPUIDEN) */
movb ax,bx /* to enable CPUID execution */
setCx86($0xe8,bx)
orb $0x80,al /* and set bit 7 (CPUIDEN) */
movb al,bl /* to enable CPUID execution */
setCx86($0xe8,bl)
getCx86($0xfe) /* DIR0 : let's check this is a 6x86(L) */
andb $0xf0,ax /* should be 3xh */
cmpb $0x30,ax
andb $0xf0,al /* should be 3xh */
cmpb $0x30,al
jne n6x86
getCx86($0xe9) /* CCR5 : we reset the SLOP bit */
andb $0xfd,ax /* so that udelay calculation */
movb ax,bx /* is correct on 6x86(L) CPUs */
setCx86($0xe9,bx)
setCx86($0xc3,cx) /* Restore old CCR3 */
andb $0xfd,al /* so that udelay calculation */
movb al,bl /* is correct on 6x86(L) CPUs */
setCx86($0xe9,bl)
setCx86($0xc3,cl) /* Restore old CCR3 */
sti
jmp isnew /* We enabled CPUID now */
n6x86: setCx86($0xc3,cx) /* Restore old CCR3 */
n6x86: setCx86($0xc3,cl) /* Restore old CCR3 */
sti
ncyrix: /* restore original EFLAGS */
popfl