mirror of https://github.com/ZDoom/gzdoom.git
- Ported asm_x86_64/tmap3.nas to AT&T syntax so it can be compiled with gas.
After finding out that gas does have directives to describe the .eh_frame metadata, I figured that would be significantly easier and quicker than trying to locate all the scattered docs I would need to read to figure out how to construct it by hand. Unfortunately, this now means I have to maintain two versions of exactly the same code. :( (But unless I add 32-bit color rendering in the future, the chances that I will have to touch it again are quite slim.) SVN r1159 (trunk)
This commit is contained in:
Randy Heit
parent
9e4b2fb3ec
commit
c9187a0e09
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@ -1,3 +1,11 @@
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August 11, 2008
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- Ported asm_x86_64/tmap3.nas to AT&T syntax so it can be compiled with gas.
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After finding out that gas does have directives to describe the .eh_frame
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metadata, I figured that would be significantly easier and quicker than
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trying to locate all the scattered docs needed to construct it by hand.
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Unfortunately, this now means I have to maintain two versions of exactly
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the same code. :(
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August 11, 2008 (Changes by Graf Zahl)
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- Removed 'eval' modifier from DECORATE. All int, float and bool parameters are
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'eval' now by default.
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@ -168,24 +168,35 @@ endif( FMOD_LIBRARY )
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# Search for NASM
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if( NOT NO_ASM )
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find_program( NASM_PATH NAMES ${NASM_NAMES} )
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find_program( YASM_PATH yasm )
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if( YASM_PATH )
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set( ASSEMBLER ${YASM_PATH} )
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else( YASM_PATH )
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if( X64 )
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message( STATUS "Could not find YASM. Disabling assembly code." )
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if( UNIX AND X64 )
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find_program( GAS_PATH as )
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if( GAS_PATH )
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set( ASSEMBLER ${GAS_PATH} )
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else( GAS_PATH )
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message( STATUS "Could not find as. Disabling assembly code." )
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set( NO_ASM ON )
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else( X64 )
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if( NOT NASM_PATH )
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message( STATUS "Could not find YASM or NASM. Disabling assembly code." )
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endif( GAS_PATH )
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else( UNIX AND X64 )
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find_program( NASM_PATH NAMES ${NASM_NAMES} )
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find_program( YASM_PATH yasm )
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if( YASM_PATH )
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set( ASSEMBLER ${YASM_PATH} )
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else( YASM_PATH )
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if( X64 )
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message( STATUS "Could not find YASM. Disabling assembly code." )
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set( NO_ASM ON )
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else( NOT NASM_PATH )
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set( ASSEMBLER ${NASM_PATH} )
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endif( NOT NASM_PATH )
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endif( X64 )
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endif( YASM_PATH )
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else( X64 )
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if( NOT NASM_PATH )
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message( STATUS "Could not find YASM or NASM. Disabling assembly code." )
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set( NO_ASM ON )
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else( NOT NASM_PATH )
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set( ASSEMBLER ${NASM_PATH} )
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endif( NOT NASM_PATH )
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endif( X64 )
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endif( YASM_PATH )
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endif( UNIX AND X64 )
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# I think the only reason there was a version requirement was because the
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# executable name for Windows changed from 0.x to 2.0, right? This is
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@ -211,16 +222,19 @@ if( NOT NO_ASM )
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if( UNIX )
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set( ASM_OUTPUT_EXTENSION .o )
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if( X64 )
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set( ASM_FLAGS -f elf64 -DM_TARGET_LINUX )
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set( ASM_FLAGS )
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set( ASM_SOURCE_EXTENSION .s )
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else( X64 )
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set( ASM_FLAGS -f elf -DM_TARGET_LINUX )
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set( ASM_FLAGS -f elf -DM_TARGET_LINUX -i${CMAKE_CURRENT_SOURCE_DIR}/ )
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set( ASM_SOURCE_EXTENSION .asm )
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endif( X64 )
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else( UNIX )
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set( ASM_OUTPUT_EXTENSION .obj )
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set( ASM_SOURCE_EXTENSION .asm )
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if( X64 )
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set( ASM_FLAGS -f win64 -DWIN32 -DWIN64 )
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else( X64 )
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set( ASM_FLAGS -f win32 -DWIN32 )
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set( ASM_FLAGS -f win32 -DWIN32 -i${CMAKE_CURRENT_SOURCE_DIR}/ )
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endif( X64 )
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endif( UNIX )
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if( WIN32 )
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@ -234,7 +248,7 @@ if( NOT NO_ASM )
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endif( WIN32 )
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add_custom_command( OUTPUT ${ASM_OUTPUT_${infile}}
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COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/zdoom.dir/${indir}
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COMMAND ${ASSEMBLER} ${ASM_FLAGS} -i${CMAKE_CURRENT_SOURCE_DIR}/ -o"${ASM_OUTPUT_${infile}}" "${CMAKE_CURRENT_SOURCE_DIR}/${indir}/${infile}.asm"
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COMMAND ${ASSEMBLER} ${ASM_FLAGS} -o"${ASM_OUTPUT_${infile}}" "${CMAKE_CURRENT_SOURCE_DIR}/${indir}/${infile}${ASM_SOURCE_EXTENSION}"
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${FIXRTEXT_${infile}}
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DEPENDS ${indir}/${infile}.asm ${FIXRTEXT} )
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set( ASM_SOURCES ${ASM_SOURCES} "${ASM_OUTPUT_${infile}}" )
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@ -1,36 +1,9 @@
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%include "valgrind.inc"
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%ifnidn __OUTPUT_FORMAT__,win64
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%error tmap3.asm is for Win64 output. You should use tmap.s for other systems.
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%endif
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BITS 64
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DEFAULT REL
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%ifnidn __OUTPUT_FORMAT__,win64
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%macro PROC_FRAME 1
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%1:
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%endmacro
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%macro rex_push_reg 1
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push %1
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%endmacro
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%macro push_reg 1
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push %1
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%endmacro
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%macro alloc_stack 1
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sub rsp,%1
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%endmacro
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%define parm1lo dil
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%else
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%define parm1lo cl
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%endif
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SECTION .data
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DEFAULT REL
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EXTERN vplce
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EXTERN vince
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EXTERN palookupoffse
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@ -42,34 +15,28 @@ EXTERN dc_pitch
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SECTION .text
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ALIGN 16
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GLOBAL ASM_PatchPitch
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ASM_PatchPitch:
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mov ecx, [dc_pitch]
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mov [pm+3], ecx
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mov [vltpitch+3], ecx
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selfmod pm, vltpitch+6
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ret
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ret
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align 16
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ALIGN 16
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GLOBAL setupvlinetallasm
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setupvlinetallasm:
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mov [shifter1+2], parm1lo
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mov [shifter2+2], parm1lo
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mov [shifter3+2], parm1lo
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mov [shifter4+2], parm1lo
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mov [shifter1+2], cl
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mov [shifter2+2], cl
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mov [shifter3+2], cl
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mov [shifter4+2], cl
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selfmod shifter1, shifter4+3
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ret
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ret
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align 16
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%ifidn __OUTPUT_FORMAT__,win64
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; Yasm can't do progbits alloc exec for win64?
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; Hmm, looks like it's automatic. No worries, then.
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SECTION .rtext write ;progbits alloc exec
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%else
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SECTION .rtext progbits alloc exec write
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%endif
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ALIGN 16
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SECTION .rtext write ;progbits alloc exec
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GLOBAL vlinetallasm4
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PROC_FRAME vlinetallasm4
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@ -138,7 +105,7 @@ loopit:
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mov edx, r8d
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shifter1: shr edx, 24
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step1: add r8d, 0x88888888
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movzx rdx, BYTE [rax+rdx]
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movzx edx, BYTE [rax+rdx]
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mov ebx, r9d
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mov dl, [r12+rdx]
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shifter2: shr ebx, 24
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@ -178,5 +145,8 @@ vltepilog:
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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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ENDPROC_FRAME
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ret
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vlinetallasm4_end:
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ENDPROC_FRAME
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ALIGN 16
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@ -0,0 +1,141 @@
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#%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 $0x88888888, %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 $0x88888888, %r9d
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source2: movzbl 0x88888888(%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 $0x88888888, %r10d
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source3: movzbl 0x88888888(%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 $0x88888888, %r11d
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source4: movzbl 0x88888888(%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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