From: Vincent Hanquez <tab@snarc.org>
To: lkml <linux-kernel@vger.kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: [PATCH] ppc32 use simplified mmenonics
Date: Sun, 22 Aug 2004 00:23:18 +0200 [thread overview]
Message-ID: <20040821222318.GA32229@snarc.org> (raw)
Hi LKML and Benjamin,
This patch substitutes complex rlwinm instruction to the simplied
instruction clrrwi when possible.
This has the same meaning as the ppc knows only about rlwinm; clrrwi
is just a language simplification.
basicly it's a : s/rlwinm R1,R2,0,0,31-N/clrrwi R1,R2,N/
Please apply or comments,
Thanks
Signed-off-by: Vincent Hanquez <tab@snarc.org>
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/entry.S linux-2.6.8.1/arch/ppc/kernel/entry.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/entry.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/entry.S 2004-08-21 21:57:47.000000000 +0200
@@ -198,7 +198,7 @@
#ifdef SHOW_SYSCALLS
bl do_show_syscall
#endif /* SHOW_SYSCALLS */
- rlwinm r10,r1,0,0,18 /* current_thread_info() */
+ clrrwi r10,r1,13 /* current_thread_info() */
lwz r11,TI_LOCAL_FLAGS(r10)
rlwinm r11,r11,0,~_TIFL_FORCE_NOERROR
stw r11,TI_LOCAL_FLAGS(r10)
@@ -223,7 +223,7 @@
mr r6,r3
li r11,-_LAST_ERRNO
cmpl 0,r3,r11
- rlwinm r12,r1,0,0,18 /* current_thread_info() */
+ clrrwi r12,r1,13 /* current_thread_info() */
blt+ 30f
lwz r11,TI_LOCAL_FLAGS(r12)
andi. r11,r11,_TIFL_FORCE_NOERROR
@@ -310,7 +310,7 @@
LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
SYNC
MTMSRD(r10) /* disable interrupts again */
- rlwinm r12,r1,0,0,18 /* current_thread_info() */
+ clrrwi r12,r1,13 /* current_thread_info() */
lwz r9,TI_FLAGS(r12)
5:
andi. r0,r9,_TIF_NEED_RESCHED
@@ -407,7 +407,7 @@
ppc_sigsuspend:
SAVE_NVGPRS(r1)
lwz r0,TRAP(r1)
- rlwinm r0,r0,0,0,30 /* clear LSB to indicate full */
+ clrrwi r0,r0,1 /* clear LSB to indicate full */
stw r0,TRAP(r1) /* register set saved */
b sys_sigsuspend
@@ -415,15 +415,15 @@
ppc_rt_sigsuspend:
SAVE_NVGPRS(r1)
lwz r0,TRAP(r1)
- rlwinm r0,r0,0,0,30
- stw r0,TRAP(r1)
+ clrrwi r0,r0,1 /* clear LSB to indicate full */
+ stw r0,TRAP(r1) /* register set saved */
b sys_rt_sigsuspend
.globl ppc_fork
ppc_fork:
SAVE_NVGPRS(r1)
lwz r0,TRAP(r1)
- rlwinm r0,r0,0,0,30 /* clear LSB to indicate full */
+ clrrwi r0,r0,1 /* clear LSB to indicate full */
stw r0,TRAP(r1) /* register set saved */
b sys_fork
@@ -431,7 +431,7 @@
ppc_vfork:
SAVE_NVGPRS(r1)
lwz r0,TRAP(r1)
- rlwinm r0,r0,0,0,30 /* clear LSB to indicate full */
+ clrrwi r0,r0,1 /* clear LSB to indicate full */
stw r0,TRAP(r1) /* register set saved */
b sys_vfork
@@ -439,7 +439,7 @@
ppc_clone:
SAVE_NVGPRS(r1)
lwz r0,TRAP(r1)
- rlwinm r0,r0,0,0,30 /* clear LSB to indicate full */
+ clrrwi r0,r0,1 /* clear LSB to indicate full */
stw r0,TRAP(r1) /* register set saved */
b sys_clone
@@ -447,7 +447,7 @@
ppc_swapcontext:
SAVE_NVGPRS(r1)
lwz r0,TRAP(r1)
- rlwinm r0,r0,0,0,30 /* clear LSB to indicate full */
+ clrrwi r0,r0,1 /* clear LSB to indicate full */
stw r0,TRAP(r1) /* register set saved */
b sys_swapcontext
@@ -566,7 +566,7 @@
.globl sigreturn_exit
sigreturn_exit:
subi r1,r3,STACK_FRAME_OVERHEAD
- rlwinm r12,r1,0,0,18 /* current_thread_info() */
+ clrrwi r12,r1,13 /* current_thread_info() */
lwz r9,TI_FLAGS(r12)
andi. r0,r9,_TIF_SYSCALL_TRACE
bnel- do_syscall_trace
@@ -592,7 +592,7 @@
user_exc_return: /* r10 contains MSR_KERNEL here */
/* Check current_thread_info()->flags */
- rlwinm r9,r1,0,0,18
+ clrrwi r9,r1,13
lwz r9,TI_FLAGS(r9)
andi. r0,r9,(_TIF_SIGPENDING|_TIF_NEED_RESCHED)
bne do_work
@@ -611,7 +611,7 @@
/* N.B. the only way to get here is from the beq following ret_from_except. */
resume_kernel:
/* check current_thread_info->preempt_count */
- rlwinm r9,r1,0,0,18
+ clrrwi r9,r1,13
lwz r0,TI_PREEMPT(r9)
cmpwi 0,r0,0 /* if non-zero, just restore regs and return */
bne restore
@@ -629,7 +629,7 @@
LOAD_MSR_KERNEL(r10,MSR_KERNEL)
SYNC
MTMSRD(r10) /* disable interrupts */
- rlwinm r9,r1,0,0,18
+ clrrwi r9,r1,13
li r0,0
stw r0,TI_PREEMPT(r9)
lwz r3,TI_FLAGS(r9)
@@ -912,7 +912,7 @@
LOAD_MSR_KERNEL(r10,MSR_KERNEL)
SYNC
MTMSRD(r10) /* disable interrupts */
- rlwinm r9,r1,0,0,18
+ clrrwi r9,r1,13
lwz r9,TI_FLAGS(r9)
andi. r0,r9,_TIF_NEED_RESCHED
bne- do_resched
@@ -927,7 +927,7 @@
andi. r0,r3,1
beq 2f
SAVE_NVGPRS(r1)
- rlwinm r3,r3,0,0,30
+ clrrwi r3,r3,1
stw r3,TRAP(r1)
2: li r3,0
addi r4,r1,STACK_FRAME_OVERHEAD
@@ -964,7 +964,7 @@
andi. r0,r3,1
beq 4f
SAVE_NVGPRS(r1)
- rlwinm r3,r3,0,0,30
+ clrrwi r3,r3,1
stw r3,TRAP(r1)
4: addi r3,r1,STACK_FRAME_OVERHEAD
bl nonrecoverable_exception
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/head_44x.S linux-2.6.8.1/arch/ppc/kernel/head_44x.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/head_44x.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/head_44x.S 2004-08-21 21:57:47.000000000 +0200
@@ -571,7 +571,7 @@
ori r11, r11, swapper_pg_dir@l
mfspr r12,SPRN_MMUCR
- rlwinm r12,r12,0,0,23 /* Clear TID */
+ clrrwi r12,r12,8 /* Clear TID */
b 4f
@@ -590,7 +590,7 @@
rlwinm r12, r10, 13, 19, 29 /* Compute pgdir/pmd offset */
lwzx r11, r12, r11 /* Get pgd/pmd entry */
- rlwinm. r12, r11, 0, 0, 20 /* Extract pt base address */
+ clrrwi. r12, r11, 11 /* Extract pt base address */
beq 2f /* Bail if no table */
rlwimi r12, r10, 23, 20, 28 /* Compute pte address */
@@ -720,7 +720,7 @@
ori r11, r11, swapper_pg_dir@l
mfspr r12,SPRN_MMUCR
- rlwinm r12,r12,0,0,23 /* Clear TID */
+ clrrwi r12,r12,8 /* Clear TID */
b 4f
@@ -739,7 +739,7 @@
rlwinm r12, r10, 13, 19, 29 /* Compute pgdir/pmd offset */
lwzx r11, r12, r11 /* Get pgd/pmd entry */
- rlwinm. r12, r11, 0, 0, 20 /* Extract pt base address */
+ clrrwi. r12, r11, 11 /* Extract pt base address */
beq 2f /* Bail if no table */
rlwimi r12, r10, 23, 20, 28 /* Compute pte address */
@@ -789,7 +789,7 @@
ori r11, r11, swapper_pg_dir@l
mfspr r12,SPRN_MMUCR
- rlwinm r12,r12,0,0,23 /* Clear TID */
+ clrrwi r12,r12,8 /* Clear TID */
b 4f
@@ -808,7 +808,7 @@
rlwinm r12, r10, 13, 19, 29 /* Compute pgdir/pmd offset */
lwzx r11, r12, r11 /* Get pgd/pmd entry */
- rlwinm. r12, r11, 0, 0, 20 /* Extract pt base address */
+ clrrwi. r12, r11, 11 /* Extract pt base address */
beq 2f /* Bail if no table */
rlwimi r12, r10, 23, 20, 28 /* Compute pte address */
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/head_4xx.S linux-2.6.8.1/arch/ppc/kernel/head_4xx.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/head_4xx.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/head_4xx.S 2004-08-21 21:57:47.000000000 +0200
@@ -347,7 +347,7 @@
tophys(r11, r11)
rlwimi r11, r10, 12, 20, 29 /* Create L1 (pgdir/pmd) address */
lwz r11, 0(r11) /* Get L1 entry */
- rlwinm. r12, r11, 0, 0, 19 /* Extract L2 (pte) base address */
+ clrrwi. r12, r11, 12 /* Extract L2 (pte) base address */
beq 2f /* Bail if no table */
rlwimi r12, r10, 22, 20, 29 /* Compute PTE address */
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/head_8xx.S linux-2.6.8.1/arch/ppc/kernel/head_8xx.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/head_8xx.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/head_8xx.S 2004-08-21 22:36:37.000000000 +0200
@@ -329,7 +329,7 @@
rlwimi r20, r21, 0, 2, 19
3:
lwz r21, 0(r20) /* Get the level 1 entry */
- rlwinm. r20, r21,0,0,19 /* Extract page descriptor page address */
+ clrrwi. r20, r21,12 /* Extract page descriptor page address */
beq 2f /* If zero, don't try to find a pte */
/* We have a pte table, so load the MI_TWC with the attributes
@@ -413,7 +413,7 @@
rlwimi r20, r21, 0, 2, 19
3:
lwz r21, 0(r20) /* Get the level 1 entry */
- rlwinm. r20, r21,0,0,19 /* Extract page descriptor page address */
+ clrrwi. r20, r21,12 /* Extract page descriptor page address */
beq 2f /* If zero, don't try to find a pte */
/* We have a pte table, so load fetch the pte from the table.
@@ -533,7 +533,7 @@
* assuming we only use the dcbi instruction on kernel addresses.
*/
mfspr r20, DAR
- rlwinm r21, r20, 0, 0, 19
+ clrrwi r21, r20, 12
ori r21, r21, MD_EVALID
mfspr r20, M_CASID
rlwimi r21, r20, 0, 28, 31
@@ -556,7 +556,7 @@
rlwimi r20, r21, 0, 2, 19
3:
lwz r21, 0(r20) /* Get the level 1 entry */
- rlwinm. r20, r21,0,0,19 /* Extract page descriptor page address */
+ clrrwi. r20, r21,12 /* Extract page descriptor page address */
beq 2f /* If zero, bail */
/* We have a pte table, so fetch the pte from the table.
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/head_e500.S linux-2.6.8.1/arch/ppc/kernel/head_e500.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/head_e500.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/head_e500.S 2004-08-21 22:37:50.000000000 +0200
@@ -640,7 +640,7 @@
4:
rlwimi r11, r10, 12, 20, 29 /* Create L1 (pgdir/pmd) address */
lwz r11, 0(r11) /* Get L1 entry */
- rlwinm. r12, r11, 0, 0, 19 /* Extract L2 (pte) base address */
+ clrrwi. r12, r11, 12 /* Extract L2 (pte) base address */
beq 2f /* Bail if no table */
rlwimi r12, r10, 22, 20, 29 /* Compute PTE address */
@@ -787,7 +787,7 @@
4:
rlwimi r11, r10, 12, 20, 29 /* Create L1 (pgdir/pmd) address */
lwz r11, 0(r11) /* Get L1 entry */
- rlwinm. r12, r11, 0, 0, 19 /* Extract L2 (pte) base address */
+ clrrwi. r12, r11, 12 /* Extract L2 (pte) base address */
beq 2f /* Bail if no table */
rlwimi r12, r10, 22, 20, 29 /* Compute PTE address */
@@ -852,7 +852,7 @@
4:
rlwimi r11, r10, 12, 20, 29 /* Create L1 (pgdir/pmd) address */
lwz r11, 0(r11) /* Get L1 entry */
- rlwinm. r12, r11, 0, 0, 19 /* Extract L2 (pte) base address */
+ clrrwi. r12, r11, 12 /* Extract L2 (pte) base address */
beq 2f /* Bail if no table */
rlwimi r12, r10, 22, 20, 29 /* Compute PTE address */
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/head.S linux-2.6.8.1/arch/ppc/kernel/head.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/head.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/head.S 2004-08-21 22:38:56.000000000 +0200
@@ -532,7 +532,7 @@
112: tophys(r2,r2)
rlwimi r2,r3,12,20,29 /* insert top 10 bits of address */
lwz r2,0(r2) /* get pmd entry */
- rlwinm. r2,r2,0,0,19 /* extract address of pte page */
+ clrrwi. r2,r2,12 /* extract address of pte page */
beq- InstructionAddressInvalid /* return if no mapping */
rlwimi r2,r3,22,20,29 /* insert next 10 bits of address */
lwz r3,0(r2) /* get linux-style pte */
@@ -606,7 +606,7 @@
112: tophys(r2,r2)
rlwimi r2,r3,12,20,29 /* insert top 10 bits of address */
lwz r2,0(r2) /* get pmd entry */
- rlwinm. r2,r2,0,0,19 /* extract address of pte page */
+ clrrwi. r2,r2,12 /* extract address of pte page */
beq- DataAddressInvalid /* return if no mapping */
rlwimi r2,r3,22,20,29 /* insert next 10 bits of address */
lwz r3,0(r2) /* get linux-style pte */
@@ -678,7 +678,7 @@
112: tophys(r2,r2)
rlwimi r2,r3,12,20,29 /* insert top 10 bits of address */
lwz r2,0(r2) /* get pmd entry */
- rlwinm. r2,r2,0,0,19 /* extract address of pte page */
+ clrrwi. r2,r2,12 /* extract address of pte page */
beq- DataAddressInvalid /* return if no mapping */
rlwimi r2,r3,22,20,29 /* insert next 10 bits of address */
lwz r3,0(r2) /* get linux-style pte */
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/idle_6xx.S linux-2.6.8.1/arch/ppc/kernel/idle_6xx.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/idle_6xx.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/idle_6xx.S 2004-08-21 22:39:45.000000000 +0200
@@ -93,7 +93,7 @@
mtmsr r0
/* Check current_thread_info()->flags */
- rlwinm r4,r1,0,0,18
+ clrrwi r4,r1,13
lwz r4,TI_FLAGS(r4)
andi. r0,r4,_TIF_NEED_RESCHED
beq 1f
@@ -111,7 +111,7 @@
* doesn't even bother doing the dcbf's here...
*/
mfspr r4,SPRN_MSSCR0
- rlwinm r4,r4,0,0,29
+ clrrwi r4,r4,2
sync
mtspr SPRN_MSSCR0,r4
sync
@@ -189,7 +189,7 @@
1:
#endif
- rlwinm r9,r1,0,0,18
+ clrrwi r9,r1,13
tophys(r9,r9)
lwz r11,TI_CPU(r9)
slwi r11,r11,2
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/idle_power4.S linux-2.6.8.1/arch/ppc/kernel/idle_power4.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/idle_power4.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/idle_power4.S 2004-08-21 22:40:06.000000000 +0200
@@ -65,7 +65,7 @@
mtmsr r0
/* Check current_thread_info()->flags */
- rlwinm r4,r1,0,0,18
+ clrrwi r4,r1,13
lwz r4,TI_FLAGS(r4)
andi. r0,r4,_TIF_NEED_RESCHED
beq 1f
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/misc.S linux-2.6.8.1/arch/ppc/kernel/misc.S
--- linux-2.6.8.1.orig/arch/ppc/kernel/misc.S 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/misc.S 2004-08-21 22:33:33.000000000 +0200
@@ -232,7 +232,7 @@
mtspr SPRN_HID1,r4
/* Store new HID1 image */
- rlwinm r6,r1,0,0,18
+ clrrwi r6,r1,13
lwz r6,TI_CPU(r6)
slwi r6,r6,2
addis r6,r6,nap_save_hid1@ha
@@ -456,7 +456,7 @@
#endif /* CONFIG_SMP */
#else /* !(CONFIG_40x || CONFIG_44x || CONFIG_FSL_BOOKE) */
#if defined(CONFIG_SMP)
- rlwinm r8,r1,0,0,18
+ clrrwi r8,r1,13
lwz r8,TI_CPU(r8)
oris r8,r8,10
mfmsr r10
@@ -523,7 +523,7 @@
isync
10:
#elif defined(CONFIG_FSL_BOOKE)
- rlwinm r4, r3, 0, 0, 19
+ clrrwi r4, r3, 12
ori r5, r4, 0x08 /* TLBSEL = 1 */
ori r6, r4, 0x10 /* TLBSEL = 2 */
ori r7, r4, 0x18 /* TLBSEL = 3 */
@@ -537,7 +537,7 @@
#endif /* CONFIG_SMP */
#else /* !(CONFIG_40x || CONFIG_44x || CONFIG_FSL_BOOKE) */
#if defined(CONFIG_SMP)
- rlwinm r8,r1,0,0,18
+ clrrwi r8,r1,13
lwz r8,TI_CPU(r8)
oris r8,r8,11
mfmsr r10
@@ -739,7 +739,7 @@
rlwinm r5,r5,16,16,31
cmpi 0,r5,1
beqlr /* for 601, do nothing */
- rlwinm r3,r3,0,0,19 /* Get page base address */
+ clrrwi r3,r3,12 /* Get page base address */
li r4,4096/L1_CACHE_LINE_SIZE /* Number of lines in a page */
mtctr r4
mr r6,r3
@@ -772,7 +772,7 @@
rlwinm r0,r10,0,28,26 /* clear DR */
mtmsr r0
isync
- rlwinm r3,r3,0,0,19 /* Get page base address */
+ clrrwi r3,r3,12 /* Get page base address */
li r4,4096/L1_CACHE_LINE_SIZE /* Number of lines in a page */
mtctr r4
mr r6,r3
diff -u -Naur linux-2.6.8.1.orig/arch/ppc/kernel/ppc_htab.c linux-2.6.8.1/arch/ppc/kernel/ppc_htab.c
--- linux-2.6.8.1.orig/arch/ppc/kernel/ppc_htab.c 2004-08-21 21:56:22.000000000 +0200
+++ linux-2.6.8.1/arch/ppc/kernel/ppc_htab.c 2004-08-21 21:59:05.000000000 +0200
@@ -275,7 +275,7 @@
/* setup mmcr0 and clear the correct pmc */
asm volatile(
"mfspr %0,%1\n\t" /* get current mccr0 */
- "rlwinm %0,%0,0,0,31-6\n\t" /* clear bits [26-31] */
+ "clrrwi %0,%0,6\n\t" /* clear bits [26-31] */
"ori %0,%0,%2 \n\t" /* or in mmcr0 settings */
"mtspr %1,%0 \n\t" /* set new mccr0 */
"mtspr %3,%4 \n\t" /* reset the pmc */
@@ -290,7 +290,7 @@
/* setup mmcr0 and clear the correct pmc */
asm volatile(
"mfspr %0,%1\n\t" /* get current mccr0 */
- "rlwinm %0,%0,0,0,31-6\n\t" /* clear bits [26-31] */
+ "clrrwi %0,%0,6\n\t" /* clear bits [26-31] */
"ori %0,%0,%2 \n\t" /* or in mmcr0 settings */
"mtspr %1,%0 \n\t" /* set new mccr0 */
"mtspr %3,%4 \n\t" /* reset the pmc */
@@ -304,7 +304,7 @@
/* setup mmcr0 and clear the correct pmc */
asm volatile(
"mfspr %0,%1\n\t" /* get current mccr0 */
- "rlwinm %0,%0,0,0,31-6\n\t" /* clear bits [26-31] */
+ "clrrwi %0,%0,6\n\t" /* clear bits [26-31] */
"ori %0,%0,%2 \n\t" /* or in mmcr0 settings */
"mtspr %1,%0 \n\t" /* set new mccr0 */
"mtspr %3,%4 \n\t" /* reset the pmc */
next reply other threads:[~2004-08-21 22:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-21 22:23 Vincent Hanquez [this message]
2004-08-22 2:00 ` [PATCH] ppc32 use simplified mmenonics Benjamin Herrenschmidt
2004-08-22 9:48 ` Vincent Hanquez
-- strict thread matches above, loose matches on Subject: below --
2004-08-22 0:45 Albert Cahalan
2004-08-22 9:43 ` Vincent Hanquez
2004-08-22 10:41 ` Albert Cahalan
2004-08-22 14:45 ` Vincent Hanquez
2004-08-22 12:40 ` Albert Cahalan
2004-08-22 16:28 ` Vincent Hanquez
2004-08-22 14:29 ` Albert Cahalan
2004-08-22 19:17 ` Vincent Hanquez
2004-08-22 17:02 ` Horst von Brand
2004-08-23 1:24 ` Benjamin Herrenschmidt
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