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Improve the state of handwritten assembly files (#865)

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* 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
This commit is contained in:
Tharo 2022-05-01 00:03:22 +01:00 • committed by GitHub
parent b9fded7b4e
commit 7334ffa373
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62 changed files with 2758 additions and 2083 deletions
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59
asm/osMapTLBRdb.s
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@ -1,34 +1,37 @@
.include "macro.inc"
#include "ultra64/asm.h"
#include "ultra64/r4300.h"
#include "ultra64/rdb.h"
# assembler directives
.set noat # allow manual use of $at
.set noreorder # don't insert nops after branches
.set gp=64 # allow use of 64-bit general purpose registers
.set noat
.set noreorder
.section .text
.balign 16
glabel osMapTLBRdb
/* 0086E0 80007AE0 40085000 */ mfc0 $t0, $10
/* 0086E4 80007AE4 2409001F */ li $t1, 31
/* 0086E8 80007AE8 40890000 */ mtc0 $t1, $0
/* 0086EC 80007AEC 40802800 */ mtc0 $zero, $5
/* 0086F0 80007AF0 240A0017 */ li $t2, 23
/* 0086F4 80007AF4 3C09C000 */ lui $t1, 0xc000
/* 0086F8 80007AF8 40895000 */ mtc0 $t1, $10
/* 0086FC 80007AFC 3C098000 */ lui $t1, 0x8000
/* 008700 80007B00 00095982 */ srl $t3, $t1, 6
/* 008704 80007B04 016A5825 */ or $t3, $t3, $t2
/* 008708 80007B08 408B1000 */ mtc0 $t3, $2
/* 00870C 80007B0C 24090001 */ li $t1, 1
/* 008710 80007B10 40891800 */ mtc0 $t1, $3
/* 008714 80007B14 00000000 */ nop
/* 008718 80007B18 42000002 */ tlbwi
/* 00871C 80007B1C 00000000 */ nop
/* 008720 80007B20 00000000 */ nop
/* 008724 80007B24 00000000 */ nop
/* 008728 80007B28 00000000 */ nop
/* 00872C 80007B2C 40885000 */ mtc0 $t0, $10
/* 008730 80007B30 03E00008 */ jr $ra
/* 008734 80007B34 00000000 */ nop
LEAF(osMapTLBRdb)
mfc0 $t0, C0_ENTRYHI
li $t1, NTLBENTRIES
mtc0 $t1, C0_INX
mtc0 $zero, C0_PAGEMASK
li $t2, (TLBLO_UNCACHED | TLBLO_D | TLBLO_V | TLBLO_G)
li $t1, (RDB_BASE_REG & TLBHI_VPN2MASK)
mtc0 $t1, C0_ENTRYHI
// Possible bug? Virtual address instead of physical address
// set as page frame number
li $t1, RDB_BASE_VIRTUAL_ADDR
srl $t3, $t1, TLBLO_PFNSHIFT
or $t3, $t3, $t2
mtc0 $t3, C0_ENTRYLO0
li $t1, TLBLO_G
mtc0 $t1, C0_ENTRYLO1
nop
tlbwi
nop
nop
nop
nop
mtc0 $t0, C0_ENTRYHI
jr $ra
nop
END(osMapTLBRdb)