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complete SSE support. user-level SSE & FPU exceptions handling

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git-svn-id: svn://kolibrios.org@168 a494cfbc-eb01-0410-851d-a64ba20cac60
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Sergey Semyonov (Serge)
2006-10-07 09:47:03 +00:00
parent 6f8abcc3e7
commit 233c3e6435
13 changed files with 5687 additions and 25 deletions
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43
kernel/trunk/kernel.asm
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@@ -120,7 +120,7 @@ app_data equ 3+app_data_l-gdts
; CR0 Flags - Protected mode and Paging
mov ecx, 0x00000021
mov ecx, CR0_PE
; Enabling 32 bit protected mode
@@ -399,9 +399,9 @@ include 'detect/disks.inc'
mov eax, sys_pgdir ;+PG_NOCACHE
mov cr3, eax
mov eax,cr0
or eax,0x80000000
mov cr0,eax
mov eax,cr0
or eax,CR0_PG
mov cr0,eax
call init_kernel_heap
call init_LFB
@@ -447,25 +447,48 @@ include 'detect/disks.inc'
mov ecx, 16
rep movsb
clts
fninit
bt [cpu_caps], CAPS_FXSR
jnc .no_FXSR
stdcall kernel_alloc, 512*256
mov [fpu_data], eax
mov ebx, cr4
or ebx, CR4_OSFXSR
mov ecx, cr0
or ebx, CR4_OSFXSR+CR4_OSXMMEXPT
mov cr4, ebx
jmp .clts
and ecx, not (CR0_MP+CR0_EM)
or ecx, CR0_NE
mov cr0, ecx
mov dword [esp-4], SSE_INIT
ldmxcsr [esp-4]
xorps xmm0, xmm0
xorps xmm1, xmm1
xorps xmm2, xmm2
xorps xmm3, xmm3
xorps xmm4, xmm4
xorps xmm5, xmm5
xorps xmm6, xmm6
xorps xmm7, xmm7
jmp .set_cr
.no_FXSR:
stdcall kernel_alloc, 112*256
mov [fpu_data], eax
mov ebx, cr4
mov ecx, cr0
and ebx, not (CR4_OSFXSR+CR4_OSXMMEXPT)
and ecx, not CR0_EM
or ecx, CR0_MP+CR0_NE
mov cr0, ecx
mov cr4, ebx
.clts:
clts
fninit
.set_cr:
mov edi, irq_tab
xor eax, eax
mov ecx, 16