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ARM64: move Psync closer to PAGE_MASK

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and use 'bic' instead of 'and'
	modified:   stub/arm64-linux.elf-so_fold.h
	modified:   stub/src/arm64-linux.elf-so_fold.S
This commit is contained in:
John Reiser 2025-01-26 18:43:14 -08:00
parent aee970e80b
commit d41ceb0d31
2 changed files with 612 additions and 616 deletions
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1208
src/stub/arm64-linux.elf-so_fold.h generated
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20
src/stub/src/arm64-linux.elf-so_fold.S
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@ -56,7 +56,7 @@ get_page_mask: .globl get_page_mask
Punmap: .globl Punmap
ldr x8,PAGE_MASK
and x8,x0,x8
bic x8,x0,x8
sub x0,x0,x8
add x1,x1,x8
munmap: .globl munmap
@ -66,7 +66,7 @@ munmap: .globl munmap
Pprotect: .globl Pprotect
mprotect: .globl mprotect
ldr x8,PAGE_MASK
and x8,x0,x8
bic x8,x0,x8
sub x0,x0,x8
add x1,x1,x8
do_sys __NR_mprotect; ret
@ -80,12 +80,19 @@ mmap_privanon: .globl mmap_privanon
Pmap: .globl Pmap
ldr x8,PAGE_MASK
and x8,x0,x8
bic x8,x0,x8
sub x0,x0,x8
add x1,x1,x8
mmap: .globl mmap
do_sys __NR_mmap; ret
Psync: .globl Psync
ldr x8,PAGE_MASK
bic x8,x0,x8
sub x0,x0,x8
add x1,x1,x8
do_sys __NR_msync; ret
fold: // enter here (x0= &so_info; x1= &{argc,argv,envp,lr}
//%esp:
// MATCH_04 ptr unfolded_code
@ -199,13 +206,6 @@ brk:
readlink:
do_sys __NR_readlink; ret
Psync: .globl Psync
ldr x8,PAGE_MASK
bic x8,x0,x8
sub x0,x0,x8
add x1,x1,x8
do_sys __NR_msync; ret
.globl __sync_cache_range
__sync_cache_range: // (void *lo, void *hi)
#include "arm64-sync-cache-range.S"