version 1.72.2.2, 2008/09/18 04:33:27 |
version 1.73, 2008/05/11 14:44:54 |
Line 648 try586: /* Use the `cpuid' instruction. |
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Line 648 try586: /* Use the `cpuid' instruction. |
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movl %cr0,%eax # get control word |
movl %cr0,%eax # get control word |
# enable paging & NPX emulation |
# enable paging & NPX emulation |
orl $(CR0_PE|CR0_PG|CR0_NE|CR0_TS|CR0_EM|CR0_MP),%eax |
orl $(CR0_PE|CR0_PG|CR0_NE|CR0_TS|CR0_EM|CR0_MP),%eax |
movl %eax,%cr0 # and page NOW! |
movl %eax,%cr0 # and let's page NOW! |
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pushl $begin # jump to high mem |
pushl $begin # jump to high mem |
ret |
ret |
Line 927 ENTRY(cpu_switchto) |
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Line 927 ENTRY(cpu_switchto) |
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#if defined(DIAGNOSTIC) && !defined(XEN) |
#if defined(DIAGNOSTIC) && !defined(XEN) |
cmpl $IPL_SCHED,CPUVAR(ILEVEL) |
cmpl $IPL_SCHED,CPUVAR(ILEVEL) |
jbe 0f |
jbe 0f |
pushl CPUVAR(ILEVEL) |
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pushl $.Lstr |
pushl $.Lstr |
call _C_LABEL(panic) |
call _C_LABEL(panic) |
addl $8,%esp |
addl $4,%esp |
.Lstr: .string "cpu_switchto: switching above IPL_SCHED (%d)\0" |
.Lstr: .string "cpu_switcho: switching above IPL_SCHED\0" |
0: |
0: |
#endif |
#endif |
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Line 1227 END(npx586bug1) |
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Line 1226 END(npx586bug1) |
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#endif /* NNPX > 0 */ |
#endif /* NNPX > 0 */ |
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/* |
/* |
* void sse2_idlezero_page(void *pg) |
* void sse2_zero_page(void *pg) |
* |
* |
* Zero a page without polluting the cache. Preemption must be |
* Zero a page without polluting the cache. |
* disabled by the caller. Abort if a preemption is pending. |
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*/ |
*/ |
ENTRY(sse2_idlezero_page) |
ENTRY(sse2_zero_page) |
pushl %ebp |
pushl %ebp |
movl %esp,%ebp |
movl %esp,%ebp |
movl 8(%esp), %edx |
movl 8(%esp), %edx |
movl $(PAGE_SIZE/32), %ecx |
movl $PAGE_SIZE, %ecx |
xorl %eax, %eax |
xorl %eax, %eax |
.align 16 |
.align 16 |
1: |
1: |
cmpl $0, CPUVAR(RESCHED) |
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jnz 2f |
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movnti %eax, 0(%edx) |
movnti %eax, 0(%edx) |
movnti %eax, 4(%edx) |
movnti %eax, 4(%edx) |
movnti %eax, 8(%edx) |
movnti %eax, 8(%edx) |
Line 1250 ENTRY(sse2_idlezero_page) |
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Line 1246 ENTRY(sse2_idlezero_page) |
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movnti %eax, 20(%edx) |
movnti %eax, 20(%edx) |
movnti %eax, 24(%edx) |
movnti %eax, 24(%edx) |
movnti %eax, 28(%edx) |
movnti %eax, 28(%edx) |
addl $32, %edx |
subl $32, %ecx |
decl %ecx |
leal 32(%edx), %edx |
jnz 1b |
jnz 1b |
sfence |
sfence |
incl %eax |
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pop %ebp |
pop %ebp |
ret |
ret |
2: |
END(sse2_zero_page) |
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/* |
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* void sse2_copy_page(void *src, void *dst) |
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* |
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* Copy a page without polluting the cache. |
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*/ |
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ENTRY(sse2_copy_page) |
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pushl %ebp |
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pushl %ebx |
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pushl %esi |
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pushl %edi |
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movl 20(%esp), %esi |
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movl 24(%esp), %edi |
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movl $PAGE_SIZE, %ebp |
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.align 16 |
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1: |
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movl 0(%esi), %eax |
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movl 4(%esi), %ebx |
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movl 8(%esi), %ecx |
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movl 12(%esi), %edx |
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movnti %eax, 0(%edi) |
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movnti %ebx, 4(%edi) |
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movnti %ecx, 8(%edi) |
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movnti %edx, 12(%edi) |
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subl $16, %ebp |
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leal 16(%esi), %esi |
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leal 16(%edi), %edi |
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jnz 1b |
sfence |
sfence |
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popl %edi |
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popl %esi |
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popl %ebx |
popl %ebp |
popl %ebp |
ret |
ret |
END(sse2_idlezero_page) |
END(sse2_copy_page) |