jory/upx
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

cacheflush

Browse Source
This commit is contained in:
John Reiser 2007-05-16 13:49:54 -07:00
parent e81dd05666
commit a3d46b18ac
1 changed files with 37 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
src/stub/src/mipsel.r3000-linux.elf-entry.S
View File

@ -65,6 +65,17 @@ M_NRV2B_LE32=2 // ../conf.h
M_NRV2D_LE32=5
M_NRV2E_LE32=8
/* These from /usr/include/asm/unistd.h */
__NR_Linux = 4000
__NR_write = 4+ __NR_Linux
__NR_exit = 1+ __NR_Linux
__NR_mmap = 90+ __NR_Linux
__NR_cacheflush = 147+ __NR_Linux
/* asm/cachectl.h */
ICACHE= 1<<0
DCACHE= 1<<1
//BAL=0x04110000
section ELFMAINX
@ -120,7 +131,7 @@ LZMA_LIT_NUM = 768
lxlzma_szframe = 12*4
lxlzma_sv_pc = 11*4
lxlzma_sv_sp = 10*4
/* 9 */
lxlzma_dst = 9*4
lxlzma_dstdone = 8*4
lxlzma_srcdone = 7*4
@ -140,6 +151,7 @@ lxlzma_srcdone = 7*4
addiu a6,sp,lxlzma_dstdone
sw ra, lxlzma_sv_pc(sp)
lw a5,0(lxdstlen)
sw lxdst,lxlzma_dst(sp)
move a4,lxdst
addiu a3,sp,lxlzma_srcdone
addiu a2,lxsrclen,-2 # 2 header bytes
@ -151,13 +163,37 @@ lxlzma_srcdone = 7*4
srl t8,t8,4
bal lzma_decode
sb t8,1(a0) # lit_pos_bits
/* It seems that for our uses the icache does not need to be invalidated,
because no lines from the destination have ever been fetched. However,
if the dcache is write-back, then some of the results might not be in
memory yet, and the icache could fetch stale data; so memory must be
updated from dcache.
The *next* call of the decompressor will tend to sweep much of the dcache
anyway, because the probability history array (typically ushort[7990] or
ushort[14134]) gets initialized.
*/
move t8,v0 # return value from decompression
lw a0,lxlzma_dst(sp)
lw a1,lxlzma_dstdone(sp)
li a2,ICACHE|DCACHE
li v0,__NR_cacheflush
syscall
move v0,t8 # return value from decompression
lw ra,lxlzma_sv_pc(sp)
lw tmp,lxlzma_sv_sp(sp)
jr ra
subu sp,sp,tmp # un_alloca
lzma_decode:
section LZMA_DEC20
#if 1 /*{*/
#include "arch/mips/mipsel.r3000/lzma_d.S"
#else /*}{*/
#include "arch/mips/mipsel.r3000/jfr-lzma_d.S"
#endif /*}*/
section LZMA_DEC30
break // FIXME
@ -177,12 +213,6 @@ eof:
pop t0; sw s0,(t0) // actual length used t0 dst
pop t0; jr t0; nop
/* These from /usr/include/asm/unistd.h */
__NR_Linux = 4000
__NR_write = 4+ __NR_Linux
__NR_exit = 1+ __NR_Linux
__NR_mmap = 90+ __NR_Linux
msg_SELinux:
addiu a2,zero,L71 - L70 // length
bal L72