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oot/asm/guMtxL2F.s

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Improve the state of handwritten assembly files (#865) * Format all handwritten asm and document some * Use c preprocessor for constants * Fix * Fix PI_STATUS_ERROR, some label improvements * Avoid hi/lo for constants * Some more comments * Properly mark functions as functions and their sizes * Fix merge * Improvements * Review suggestions, rework procedure start/end macros to be more like libreultra * Move IPL3 symbol definitions into ipl3.s * Fix undefined_syms, add include and language guards to asm.h and fix the comment in gbi.h * Consistent hex capitalization, add some MIPS builtin defines to CC_CHECK to behave properly * Add -no-pad-sections assembler option and clean up alignment in gu files and bzero * Further suggestions and improvements * Matrix conversion function clarifications * Fix passing AVOID_UB to gcc * Suggestions * Suggestions, global interrupt mask improvements * Further suggestions, interrupt mask comments * Comments fixes, rdb.h * Switch from # comments to // comments, remove unnecesary .set gp=64 directives * Further review suggestions * Missed one
2022-04-30 23:03:22 +00:00
#include "ultra64/asm.h"
Decompile the last of libultra_code_O2 (#464) * Decompile osPfsFileState, move guMtxL2F to asm/ * Remove asm * Add some prototypes to functions.h
2020-10-28 19:59:18 +00:00
Improve the state of handwritten assembly files (#865) * Format all handwritten asm and document some * Use c preprocessor for constants * Fix * Fix PI_STATUS_ERROR, some label improvements * Avoid hi/lo for constants * Some more comments * Properly mark functions as functions and their sizes * Fix merge * Improvements * Review suggestions, rework procedure start/end macros to be more like libreultra * Move IPL3 symbol definitions into ipl3.s * Fix undefined_syms, add include and language guards to asm.h and fix the comment in gbi.h * Consistent hex capitalization, add some MIPS builtin defines to CC_CHECK to behave properly * Add -no-pad-sections assembler option and clean up alignment in gu files and bzero * Further suggestions and improvements * Matrix conversion function clarifications * Fix passing AVOID_UB to gcc * Suggestions * Suggestions, global interrupt mask improvements * Further suggestions, interrupt mask comments * Comments fixes, rdb.h * Switch from # comments to // comments, remove unnecesary .set gp=64 directives * Further review suggestions * Missed one
2022-04-30 23:03:22 +00:00
.set noat
.set noreorder
Decompile the last of libultra_code_O2 (#464) * Decompile osPfsFileState, move guMtxL2F to asm/ * Remove asm * Add some prototypes to functions.h
2020-10-28 19:59:18 +00:00
.section .text
Improve the state of handwritten assembly files (#865) * Format all handwritten asm and document some * Use c preprocessor for constants * Fix * Fix PI_STATUS_ERROR, some label improvements * Avoid hi/lo for constants * Some more comments * Properly mark functions as functions and their sizes * Fix merge * Improvements * Review suggestions, rework procedure start/end macros to be more like libreultra * Move IPL3 symbol definitions into ipl3.s * Fix undefined_syms, add include and language guards to asm.h and fix the comment in gbi.h * Consistent hex capitalization, add some MIPS builtin defines to CC_CHECK to behave properly * Add -no-pad-sections assembler option and clean up alignment in gu files and bzero * Further suggestions and improvements * Matrix conversion function clarifications * Fix passing AVOID_UB to gcc * Suggestions * Suggestions, global interrupt mask improvements * Further suggestions, interrupt mask comments * Comments fixes, rdb.h * Switch from # comments to // comments, remove unnecesary .set gp=64 directives * Further review suggestions * Missed one
2022-04-30 23:03:22 +00:00
.balign 32
Decompile the last of libultra_code_O2 (#464) * Decompile osPfsFileState, move guMtxL2F to asm/ * Remove asm * Add some prototypes to functions.h
2020-10-28 19:59:18 +00:00
Improve the state of handwritten assembly files (#865) * Format all handwritten asm and document some * Use c preprocessor for constants * Fix * Fix PI_STATUS_ERROR, some label improvements * Avoid hi/lo for constants * Some more comments * Properly mark functions as functions and their sizes * Fix merge * Improvements * Review suggestions, rework procedure start/end macros to be more like libreultra * Move IPL3 symbol definitions into ipl3.s * Fix undefined_syms, add include and language guards to asm.h and fix the comment in gbi.h * Consistent hex capitalization, add some MIPS builtin defines to CC_CHECK to behave properly * Add -no-pad-sections assembler option and clean up alignment in gu files and bzero * Further suggestions and improvements * Matrix conversion function clarifications * Fix passing AVOID_UB to gcc * Suggestions * Suggestions, global interrupt mask improvements * Further suggestions, interrupt mask comments * Comments fixes, rdb.h * Switch from # comments to // comments, remove unnecesary .set gp=64 directives * Further review suggestions * Missed one
2022-04-30 23:03:22 +00:00
#define MTX_INTPART 0
#define MTX_FRACPART 0x20
LEAF(guMtxL2F)
li $at, 0x37800000 // 1.0f / 65536.0f
mtc1 $at, $f0
li $t9, 0xFFFF0000
addiu $t8, $a1, MTX_FRACPART
1:
lw $t0, MTX_INTPART($a1)
lw $t1, MTX_FRACPART($a1)
addiu $a1, $a1, 4
and $t2, $t0, $t9
srl $t3, $t1, 0x10
or $t4, $t2, $t3
mtc1 $t4, $f4
sll $t5, $t0, 0x10
andi $t6, $t1, 0xFFFF
or $t7, $t5, $t6
cvt.s.w $f6, $f4
mtc1 $t7, $f10
addiu $a0, $a0, 8
cvt.s.w $f16, $f10
mul.s $f8, $f6, $f0
nop
mul.s $f18, $f16, $f0
swc1 $f8, -8($a0)
bne $a1, $t8, 1b
swc1 $f18, -4($a0)
jr $ra
nop
END(guMtxL2F)
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