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141 lines
2.9 KiB
ArmAsm
141 lines
2.9 KiB
ArmAsm
#%include "valgrind.inc"
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.section .text
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.globl ASM_PatchPitch
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ASM_PatchPitch:
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movl dc_pitch(%rip), %ecx
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movl %ecx, pm+3(%rip)
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movl %ecx, vltpitch+3(%rip)
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# selfmod pm, vltpitch+6
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ret
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.align 16
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.globl setupvlinetallasm
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setupvlinetallasm:
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movb %dil, shifter1+2(%rip)
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movb %dil, shifter2+2(%rip)
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movb %dil, shifter3+2(%rip)
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movb %dil, shifter4+2(%rip)
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# selfmod shifter1, shifter4+3
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ret
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.align 16
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.section .rtext,"awx"
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.globl vlinetallasm4
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.type vlinetallasm4,@function
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vlinetallasm4:
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.cfi_startproc
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push %rbx
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push %rdi
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push %r15
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push %r14
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push %r13
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push %r12
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push %rbp
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push %rsi
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subq $8, %rsp # Does the stack need to be 16-byte aligned for Linux?
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.cfi_adjust_cfa_offset 8
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# rax = bufplce base address
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# rbx =
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# rcx = offset from rdi/count (negative)
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# edx/rdx = scratch
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# rdi = bottom of columns to write to
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# r8d-r11d = column offsets
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# r12-r15 = palookupoffse[0] - palookupoffse[4]
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movl dc_count(%rip), %ecx
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movq dc_dest(%rip), %rdi
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testl %ecx, %ecx
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jle vltepilog # count must be positive
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movq bufplce(%rip), %rax
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movq bufplce+8(%rip), %r8
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subq %rax, %r8
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movq bufplce+16(%rip), %r9
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subq %rax, %r9
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movq bufplce+24(%rip), %r10
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subq %rax, %r10
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movl %r8d, source2+4(%rip)
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movl %r9d, source3+4(%rip)
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movl %r10d, source4+4(%rip)
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pm: imulq $320, %rcx
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movq palookupoffse(%rip), %r12
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movq palookupoffse+8(%rip), %r13
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movq palookupoffse+16(%rip), %r14
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movq palookupoffse+24(%rip), %r15
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movl vince(%rip), %r8d
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movl vince+4(%rip), %r9d
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movl vince+8(%rip), %r10d
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movl vince+12(%rip), %r11d
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movl %r8d, step1+3(%rip)
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movl %r9d, step2+3(%rip)
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movl %r10d, step3+3(%rip)
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movl %r11d, step4+3(%rip)
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addq %rcx, %rdi
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negq %rcx
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movl vplce(%rip), %r8d
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movl vplce+4(%rip), %r9d
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movl vplce+8(%rip), %r10d
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movl vplce+12(%rip), %r11d
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# selfmod loopit, vltepilog
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jmp loopit
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.align 16
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loopit:
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movl %r8d, %edx
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shifter1: shrl $24, %edx
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step1: addl $0x44444444, %r8d
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movzbl (%rax,%rdx), %edx
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movl %r9d, %ebx
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movb (%r12,%rdx), %dl
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shifter2: shrl $24, %ebx
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step2: addl $0x44444444, %r9d
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source2: movzbl 0x44444444(%rax,%rbx), %ebx
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movl %r10d, %ebp
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movb (%r13,%rbx), %bl
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shifter3: shr $24, %ebp
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step3: addl $0x44444444, %r10d
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source3: movzbl 0x44444444(%rax,%rbp), %ebp
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movl %r11d, %esi
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movb (%r14,%rbp), %bpl
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shifter4: shr $24, %esi
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step4: add $0x44444444, %r11d
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source4: movzbl 0x44444444(%rax,%rsi), %esi
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movb %dl, (%rdi,%rcx)
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movb %bl, 1(%rdi,%rcx)
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movb (%r15,%rsi), %sil
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movb %bpl, 2(%rdi,%rcx)
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movb %sil, 3(%rdi,%rcx)
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vltpitch: addq $320, %rcx
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jl loopit
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movl %r8d, vplce(%rip)
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movl %r9d, vplce+4(%rip)
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movl %r10d, vplce+8(%rip)
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movl %r11d, vplce+12(%rip)
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vltepilog:
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addq $8, %rsp
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.cfi_adjust_cfa_offset -8
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pop %rsi
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pop %rbp
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pop %r12
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pop %r13
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pop %r14
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pop %r15
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pop %rdi
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pop %rbx
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ret
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.cfi_endproc
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.align 16
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