forked from KolibriOS/kolibrios
389 lines
8.2 KiB
PHP
389 lines
8.2 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2017. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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init_fpu:
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clts
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fninit
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bt [cpu_caps+(CAPS_XSAVE/32)*4], CAPS_XSAVE mod 32
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jmp .no_xsave ; not ready to be jnc so far
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mov ecx, cr4
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or ecx, CR4_OSXSAVE
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mov cr4, ecx
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mov eax, 0x0d
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xor ecx, ecx
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cpuid
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mov ebx, XCR0_FPU_MMX + XCR0_SSE + XCR0_AVX + XCR0_AVX512
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and ebx, eax
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xor ecx, ecx
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xgetbv
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or eax, ebx
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xor ecx, ecx
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xsetbv
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mov eax, 0x0d
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xor ecx, ecx
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cpuid
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mov [xsave_area_size], ebx
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cmp ebx, fpu_data_size
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ja $
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test eax, XCR0_AVX512
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jz @f
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call init_avx512
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xsave [fpu_data]
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ret
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@@:
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test eax, XCR0_AVX
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jz @f
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call init_avx
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xsave [fpu_data]
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ret
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@@:
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test eax, XCR0_SSE
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jnz .sse
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jmp .fpu_mmx
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.no_xsave:
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mov [xsave_area_size], 512 ; enough for FPU/MMX and SSE
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bt [cpu_caps], CAPS_SSE
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jnc .fpu_mmx
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.sse:
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call init_sse
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fxsave [fpu_data]
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ret
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.fpu_mmx:
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call init_fpu_mmx
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fnsave [fpu_data]
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ret
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init_fpu_mmx:
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mov ecx, cr0
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and ecx, not CR0_EM
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or ecx, CR0_MP + CR0_NE
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mov cr0, ecx
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ret
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init_sse:
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mov ebx, cr4
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mov ecx, cr0
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or ebx, CR4_OSFXSR+CR4_OSXMMEXPT
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mov cr4, ebx
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and ecx, not (CR0_EM + CR0_MP)
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or ecx, CR0_NE
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mov cr0, ecx
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mov dword [esp-4], MXCSR_INIT
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ldmxcsr [esp-4]
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xorps xmm0, xmm0
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xorps xmm1, xmm1
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xorps xmm2, xmm2
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xorps xmm3, xmm3
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xorps xmm4, xmm4
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xorps xmm5, xmm5
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xorps xmm6, xmm6
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xorps xmm7, xmm7
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ret
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init_avx:
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mov ebx, cr4
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or ebx, CR4_OSFXSR + CR4_OSXMMEXPT
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mov cr4, ebx
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mov ecx, cr0
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and ecx, not (CR0_EM + CR0_MP)
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or ecx, CR0_NE
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mov cr0, ecx
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mov dword [esp-4], MXCSR_INIT
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vldmxcsr [esp-4]
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vzeroall
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ret
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init_avx512:
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mov ebx, cr4
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or ebx, CR4_OSFXSR + CR4_OSXMMEXPT
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mov cr4, ebx
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mov ecx, cr0
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and ecx, not (CR0_EM + CR0_MP)
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or ecx, CR0_NE
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mov cr0, ecx
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mov dword [esp-4], MXCSR_INIT
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vldmxcsr [esp-4]
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vpxorq zmm0, zmm0, zmm0
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vpxorq zmm1, zmm1, zmm1
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vpxorq zmm2, zmm2, zmm2
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vpxorq zmm3, zmm3, zmm3
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vpxorq zmm4, zmm4, zmm4
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vpxorq zmm5, zmm5, zmm5
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vpxorq zmm6, zmm6, zmm6
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vpxorq zmm7, zmm7, zmm7
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ret
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; param
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; eax= 512 bytes memory area aligned on a 16-byte boundary
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align 4
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fpu_save:
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push ecx
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push esi
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push edi
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pushfd
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cli
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clts
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mov edi, eax
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mov ecx, [fpu_owner]
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mov esi, [CURRENT_TASK]
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cmp ecx, esi
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jne .save
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call save_fpu_context
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jmp .exit
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.save:
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mov [fpu_owner], esi
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shl ecx, 8
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mov eax, [ecx+SLOT_BASE+APPDATA.fpu_state]
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call save_context
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; first 512 bytes of XSAVE area have the same format as FXSAVE
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shl esi, 8
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mov esi, [esi+SLOT_BASE+APPDATA.fpu_state]
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mov ecx, 512/4
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cld
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rep movsd
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fninit
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.exit:
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popfd
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pop edi
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pop esi
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pop ecx
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ret
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avx_save_size:
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mov eax, [xsave_area_size]
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ret
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; param
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; eax= avx_save_size() bytes memory area aligned on a 64-byte boundary
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avx_save:
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push ecx
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push esi
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push edi
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pushfd
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cli
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clts
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mov edi, eax
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mov ecx, [fpu_owner]
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mov esi, [CURRENT_TASK]
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cmp ecx, esi
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jne .save
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call save_context
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jmp .exit
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.save:
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mov [fpu_owner], esi
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shl ecx, 8
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mov eax, [ecx+SLOT_BASE+APPDATA.fpu_state]
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call save_context
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shl esi, 8
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mov esi, [esi+SLOT_BASE+APPDATA.fpu_state]
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mov ecx, [xsave_area_size]
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add ecx, 3
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shr ecx, 2
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rep movsd
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fninit
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.exit:
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popfd
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pop edi
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pop esi
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pop ecx
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ret
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align 4
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save_context:
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bt [cpu_caps+(CAPS_OSXSAVE/32)*4], CAPS_OSXSAVE mod 32
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jnc save_fpu_context
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xsave [eax]
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ret
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save_fpu_context:
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bt [cpu_caps], CAPS_SSE
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jnc .no_SSE
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fxsave [eax]
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ret
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.no_SSE:
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fnsave [eax]
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ret
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align 4
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fpu_restore:
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push ecx
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push esi
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mov esi, eax
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pushfd
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cli
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mov ecx, [fpu_owner]
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mov eax, [CURRENT_TASK]
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cmp ecx, eax
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jne .copy
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clts
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bt [cpu_caps], CAPS_SSE
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jnc .no_SSE
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fxrstor [esi]
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popfd
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pop esi
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pop ecx
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ret
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.no_SSE:
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fnclex ;fix possible problems
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frstor [esi]
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popfd
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pop esi
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pop ecx
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ret
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.copy:
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shl eax, 8
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mov edi, [eax+SLOT_BASE+APPDATA.fpu_state]
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mov ecx, 512/4
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cld
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rep movsd
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popfd
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pop esi
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pop ecx
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ret
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avx_restore:
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push ecx
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push esi
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mov esi, eax
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pushfd
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cli
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mov ecx, [fpu_owner]
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mov eax, [CURRENT_TASK]
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cmp ecx, eax
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jne .copy
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clts
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bt [cpu_caps+(CAPS_OSXSAVE/32)*4], CAPS_OSXSAVE mod 32
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jnc .no_xsave
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xrstor [esi]
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popfd
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pop esi
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pop ecx
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ret
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.no_xsave:
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bt [cpu_caps], CAPS_SSE
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jnc .no_SSE
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fxrstor [esi]
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popfd
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pop esi
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pop ecx
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ret
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.no_SSE:
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fnclex ;fix possible problems
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frstor [esi]
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popfd
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pop esi
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pop ecx
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ret
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.copy:
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shl eax, 8
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mov edi, [eax+SLOT_BASE+APPDATA.fpu_state]
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mov ecx, [xsave_area_size]
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add ecx, 3
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shr ecx, 2
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cld
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rep movsd
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popfd
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pop esi
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pop ecx
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ret
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align 4
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except_7: ;#NM exception handler
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save_ring3_context
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clts
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mov ax, app_data;
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mov ds, ax
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mov es, ax
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mov ebx, [fpu_owner]
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cmp ebx, [CURRENT_TASK]
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je .exit
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shl ebx, 8
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mov eax, [ebx+SLOT_BASE+APPDATA.fpu_state]
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bt [cpu_caps+(CAPS_OSXSAVE/32)*4], CAPS_OSXSAVE mod 32
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jnc .no_xsave
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xsave [eax]
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mov ebx, [CURRENT_TASK]
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mov [fpu_owner], ebx
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shl ebx, 8
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mov eax, [ebx+SLOT_BASE+APPDATA.fpu_state]
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xrstor [eax]
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.exit:
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restore_ring3_context
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iret
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.no_xsave:
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bt [cpu_caps], CAPS_SSE
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jnc .no_SSE
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fxsave [eax]
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mov ebx, [CURRENT_TASK]
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mov [fpu_owner], ebx
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shl ebx, 8
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mov eax, [ebx+SLOT_BASE+APPDATA.fpu_state]
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fxrstor [eax]
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restore_ring3_context
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iret
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.no_SSE:
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fnsave [eax]
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mov ebx, [CURRENT_TASK]
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mov [fpu_owner], ebx
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shl ebx, 8
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mov eax, [ebx+SLOT_BASE+APPDATA.fpu_state]
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frstor [eax]
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restore_ring3_context
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iret
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iglobal
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fpu_owner dd 2
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endg
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