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Improved cache handling in mips

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-11-26 22:20:06 +01:00
parent d4e56ea787
commit f93415cfee
1 changed files with 34 additions and 12 deletions
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46
lib/mips/relocator_asm.S
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@ -30,16 +30,28 @@ copycont1:
addiu $8, $8, 0x1 addiu $8, $8, 0x1
addiu $9, $9, 0x1 addiu $9, $9, 0x1
addiu $10, $10, 0xffff addiu $10, $10, 0xffff
subu $11,$10,$0 bne $10, $0, copycont1
bne $11, $0, copycont1
cachecont1: move $9, $12
move $10, $13
cachecont1a:
cache 1,0($12) cache 1,0($12)
addiu $12, $12, 0x1
addiu $13, $13, 0xffff
bne $13, $0, cachecont1a
sync
move $12, $9
move $13, $10
cachecont1b:
cache 0,0($12) cache 0,0($12)
addiu $12, $12, 0x1 addiu $12, $12, 0x1
addiu $13, $13, 0xffff addiu $13, $13, 0xffff
subu $11,$13,$0 bne $13, $0, cachecont1b
bne $11, $0, cachecont1
sync
VARIABLE (grub_relocator32_forward_end) VARIABLE (grub_relocator32_forward_end)
VARIABLE (grub_relocator32_backward_start) VARIABLE (grub_relocator32_backward_start)
@ -54,18 +66,28 @@ VARIABLE (grub_relocator32_backward_start)
copycont2: copycont2:
lb $11,0($8) lb $11,0($8)
sb $11,0($9) sb $11,0($9)
cache 1, 0($9)
cache 0, 0($9)
addiu $8, $8, 0xffff addiu $8, $8, 0xffff
addiu $9, $9, 0xffff addiu $9, $9, 0xffff
addiu $10, 0xffff addiu $10, 0xffff
subu $11,$10,$0 bne $10, $0, copycont2
bne $11, $0, copycont2
cachecont2: move $9, $12
move $10, $13
cachecont2a:
cache 1,0($12) cache 1,0($12)
addiu $12, $12, 0x1
addiu $13, $13, 0xffff
bne $13, $0, cachecont2a
sync
move $12, $9
move $13, $10
cachecont2b:
cache 0,0($12) cache 0,0($12)
addiu $12, $12, 0x1 addiu $12, $12, 0x1
addiu $13, $13, 0xffff addiu $13, $13, 0xffff
subu $11,$13,$0 bne $13, $0, cachecont2b
bne $11, $0, cachecont2
sync
VARIABLE (grub_relocator32_backward_end) VARIABLE (grub_relocator32_backward_end)