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The bcopy_page() and bzero_page() functions now call mcount() if 

GPROF and PROFILE_ASM are defined.
Register usage has been changed to avoid using r11. This means we have
one less register to save during this function.
This commit is contained in:
mark 1996-10-15 01:52:01 +00:00
parent 8850151b06
commit ec238c0c33
1 changed files with 95 additions and 72 deletions
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167
sys/arch/arm32/arm32/bcopy_page.S
View File

@ -1,4 +1,4 @@
/* $NetBSD: bcopy_page.S,v 1.2 1996/06/03 21:21:31 mark Exp $ */
/* $NetBSD: bcopy_page.S,v 1.3 1996/10/15 01:52:01 mark Exp $ */
/*
* Copyright (c) 1995 Scott Stevens
@ -38,79 +38,103 @@
* Created : 08/04/95
*/
ip .req r12
sp .req r13
lr .req r14
pc .req r15
#include <machine/param.h>
/* TODO:
/*
* bcopy_page(src, dest)
*
* Use r2 as the counter so that r3-r10 can be used instead of r4-r11
* This means r11 will not need to be pushed on the stack.
*/
/* bcopy_page(src, dest)
* r0 - src
* r1 - dest
* number of bytes (NBPG) is a multiple of 512
* Optimised copy page routine.
*
* On entry:
* r0 - src address
* r1 - dest address
*
* Requires:
* number of bytes per page (NBPG) is a multiple of 512
*/
.global _bcopy_page
_bcopy_page:
mov r3, #(NBPG >> 9)
stmfd sp!, {r4-r10, lr}
STMFD r13!, {r4-r11, r14}
#if defined(GPROF) && defined(PROFILE_ASM)
mov ip, lr
bl mcount
#endif
mov r2, #(NBPG >> 9)
loopcopy:
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r4-r11}
stmia r1!, {r4-r11}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
ldmia r0!, {r3-r10}
stmia r1!, {r3-r10}
subs r3, r3, #1
bgt loopcopy
subs r2, r2, #1
bne loopcopy
ldmfd r13!, {r4-r11, r15}
ldmfd sp!, {r4-r10, pc}
/* bzero_page(dest)
* r0 - dest
* number of bytes is a multiple of 512
/*
* bzero_page(dest)
*
* Optimised zero page routine.
*
* On entry:
* r0 - dest address
*
* Requires:
* number of bytes per page (NBPG) is a multiple of 512
*/
.global _bzero_page
_bzero_page:
mov r3, #(NBPG >> 9)
stmfd sp!, {r4-r10, lr}
stmfd r13!, {r4-r11, r14}
#if defined(GPROF) && defined(PROFILE_ASM)
mov ip, lr
bl mcount
#endif
mov r2, #(NBPG >> 9)
mov r3, #0
mov r4, #0
mov r5, #0
mov r6, #0
@ -118,30 +142,29 @@ _bzero_page:
mov r8, #0
mov r9, #0
mov r10, #0
mov r11, #0
loopzero:
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r4-r11}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
stmia r0!, {r3-r10}
subs r3, r3, #1
bgt loopzero
subs r2, r2, #1
bne loopzero
ldmfd r13!, {r4-r11, r15}
ldmfd sp!, {r4-r10, pc}