nold/Atmosphere
1
0
Fork 0
mirror of https://github.com/Atmosphere-NX/Atmosphere synced 2024-12-22 20:31:14 +00:00
Code Issues Projects Releases Packages Wiki Activity

kern: trivially optimize userspace io memory write

Browse source
This commit is contained in:
Michael Scire 2021-04-07 10:09:35 -07:00 committed by SciresM
parent 01f5c89902
commit 19b253fd17
1 changed files with 3 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
libraries/libmesosphere/source/arch/arm64/kern_userspace_memory_access_asm.s
View file

@ -758,7 +758,6 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess18WriteIoMemory32BitEPvPKvm:
mov x8, x30
1: /* Read the word from normal memory. */
mov x30, x8
ldtr w9, [x5]
/* Set our return address so that on read failure we continue. */
@ -769,7 +768,7 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess18WriteIoMemory32BitEPvPKvm:
dsb sy
2: /* Continue. */
nop
mov x30, x8
/* Advance. */
add x4, x4, #4
@ -801,7 +800,6 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess18WriteIoMemory16BitEPvPKvm:
mov x8, x30
1: /* Read the word from normal memory. */
mov x30, x8
ldtrh w9, [x5]
/* Set our return address so that on read failure we continue. */
@ -812,7 +810,7 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess18WriteIoMemory16BitEPvPKvm:
dsb sy
2: /* Continue. */
nop
mov x30, x8
/* Advance. */
add x4, x4, #2
@ -844,7 +842,6 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess17WriteIoMemory8BitEPvPKvm:
mov x8, x30
1: /* Read the word from normal memory. */
mov x30, x8
ldtrb w9, [x5]
/* Set our return address so that on read failure we continue. */
@ -855,7 +852,7 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess17WriteIoMemory8BitEPvPKvm:
dsb sy
2: /* Continue. */
nop
mov x30, x8
/* Advance. */
add x4, x4, #1