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https://github.com/zeldaret/oot.git
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7334ffa373
* 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
38 lines
805 B
ArmAsm
38 lines
805 B
ArmAsm
#include "ultra64/asm.h"
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#include "ultra64/r4300.h"
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#include "ultra64/rdb.h"
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.set noat
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.set noreorder
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.section .text
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.balign 16
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LEAF(osMapTLBRdb)
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mfc0 $t0, C0_ENTRYHI
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li $t1, NTLBENTRIES
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mtc0 $t1, C0_INX
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mtc0 $zero, C0_PAGEMASK
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li $t2, (TLBLO_UNCACHED | TLBLO_D | TLBLO_V | TLBLO_G)
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li $t1, (RDB_BASE_REG & TLBHI_VPN2MASK)
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mtc0 $t1, C0_ENTRYHI
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// Possible bug? Virtual address instead of physical address
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// set as page frame number
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li $t1, RDB_BASE_VIRTUAL_ADDR
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srl $t3, $t1, TLBLO_PFNSHIFT
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or $t3, $t3, $t2
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mtc0 $t3, C0_ENTRYLO0
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li $t1, TLBLO_G
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mtc0 $t1, C0_ENTRYLO1
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nop
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tlbwi
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nop
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nop
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nop
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nop
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mtc0 $t0, C0_ENTRYHI
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jr $ra
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nop
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END(osMapTLBRdb)
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