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Convert most numeric constants to their symbolic equivalents. (step 2 of 

cleaning up this file).
This commit is contained in:
matt 2003-07-31 06:49:32 +00:00
parent 6874712934
commit 82ebd07f24
1 changed files with 70 additions and 86 deletions
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156
sys/arch/powerpc/powerpc/trap_subr.S
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@ -1,4 +1,4 @@
/* $NetBSD: trap_subr.S,v 1.40 2003/07/31 06:21:09 matt Exp $ */
/* $NetBSD: trap_subr.S,v 1.41 2003/07/31 06:49:32 matt Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -45,10 +45,10 @@
#ifdef ALTIVEC
#define SAVE_VRSAVE(tf,b) \
mfspr b,SPR_VRSAVE; \
stw b,FRAME_VRSAVE+8(tf);
stw b,(FRAME_VRSAVE+(2*SZREG))(tf);
#define RESTORE_VRSAVE(tf,b) \
lwz b,FRAME_VRSAVE+8(tf); \
lwz b,(FRAME_VRSAVE+(2*SZREG))(tf); \
mtspr SPR_VRSAVE,b;
#else
#define SAVE_VRSAVE(tf,b)
@ -94,10 +94,10 @@
*/
#define SAVE_MQ(tf,b) \
mfspr b,SPR_MQ; \
stw b,FRAME_MQ+8(tf);
stw b,(FRAME_MQ+(2*SZREG))(tf);
#define RESTORE_MQ(tf,b) \
lwz b,FRAME_MQ+8(tf); \
lwz b,(FRAME_MQ+(2*SZREG))(tf); \
mtspr SPR_MQ,b;
/*
@ -132,7 +132,7 @@ _C_LABEL(alitrap):
stmw 28,CI_TEMPSAVE(1) /* free r28-r31 */
mfdar 30
mfdsisr 31
stmw 30,CI_TEMPSAVE+16(1)
stmw 30,(CI_TEMPSAVE+(4*SZREG))(1)
mfsprg1 1 /* restore SP */
mflr 28 /* save LR */
mfcr 29 /* save CR */
@ -170,7 +170,7 @@ _C_LABEL(dsitrap):
bc 4,30,1f /* branch if supervisor valid is
false */
/* get batl */
lwz 31,_C_LABEL(battable)+4@l(31)
lwz 31,_C_LABEL(battable)+SZREG@l(31)
/* We randomly use the highest two bat registers here */
mftb 28
andi. 28,28,1
@ -219,7 +219,7 @@ _C_LABEL(dsi601trap):
/* get batl */
addis 31,31,_C_LABEL(battable)@ha
lwz 30,_C_LABEL(battable)+4@l(31)
lwz 30,_C_LABEL(battable)+SZREG@l(31)
mtcr 30
bc 4,25,1f /* branch if Valid is is false,
presently assumes supervisor only */
@ -303,24 +303,6 @@ _C_LABEL(decrsize) = .-_C_LABEL(decrint)
/* LINTSTUB: Var: int tlbimiss[1], tlbimsize[1]; */
.globl _C_LABEL(tlbimiss),_C_LABEL(tlbimsize)
_C_LABEL(tlbimiss):
#ifdef PMAPDEBUG
mfspr 2,SPR_IMISS /* exception address */
li 1,24 /* get rid of the lower */
srw 2,2,1 /* 24 bits */
li 1,1 /* Load 1 */
cmpl 2,1,1 /* is it > 16MB */
blt 99f /* nope, skip saving these SPRs */
li 1,0xc0 /* arbitrary */
mfspr 2,SPR_HASH1
stw 2,0(1)
mfspr 2,SPR_HASH2
stw 2,4(1)
mfspr 2,SPR_IMISS
stw 2,8(1)
mfspr 2,SPR_ICMP
stw 2,12(1)
99:
#endif /* PMAPDEBUG */
mfspr 2,SPR_HASH1 /* get first pointer */
li 1,8
mfctr 0 /* save counter */
@ -340,7 +322,7 @@ _C_LABEL(tlbimiss):
mfspr 0,SPR_IMISS /* get the miss address for the tlbli */
mfsrr1 3 /* get the saved cr0 bits */
mtcrf 0x80,3 /* and restore */
ori 1,1,0x100 /* set the reference bit */
ori 1,1,PTE_REF /* set the reference bit */
mtspr SPR_RPA,1 /* set the pte */
srwi 1,1,8 /* get byte 7 of pte */
tlbli 0 /* load the itlb */
@ -348,27 +330,27 @@ _C_LABEL(tlbimiss):
rfi
3: /* not found in pteg */
andi. 1,3,0x40 /* have we already done second hash? */
andi. 1,3,PTE_HID /* have we already done second hash? */
bne 5f
mfspr 2,SPR_HASH2 /* get the second pointer */
ori 3,3,0x40 /* change the compare value */
ori 3,3,PTE_HID /* change the compare value */
li 1,8
addi 2,2,-8 /* predec pointer */
b 1b
4: /* guarded */
mfsrr1 3
andi. 2,3,0xffff /* clean upper srr1 */
oris 2,2,0x8000000@h /* set srr<4> to flag prot violation */
oris 2,2,DSISR_PROTECT@h /* set srr<4> to flag prot violation */
b 6f
5: /* not found anywhere */
mfsrr1 3
andi. 2,3,0xffff /* clean upper srr1 */
oris 2,2,0x40000000@h /* set srr1<1> to flag pte not found */
oris 2,2,DSISR_NOTFOUND@h /* set srr1<1> to flag pte not found */
6:
mtctr 0 /* restore counter */
mtsrr1 2
mfmsr 0
xoris 0,0,0x20000@h /* flip the msr<tgpr> bit */
xoris 0,0,PSL_TGPR@h /* flip the msr<tgpr> bit */
mtcrf 0x80,3 /* restore cr0 */
mtmsr 0 /* now with native gprs */
isync
@ -395,7 +377,7 @@ _C_LABEL(tlbdlmiss):
mfspr 0,SPR_DMISS /* get the miss address for the tlbld */
mfsrr1 3 /* get the saved cr0 bits */
mtcrf 0x80,3 /* and restore */
ori 1,1,0x100 /* set the reference bit */
ori 1,1,PTE_REF /* set the reference bit */
mtspr SPR_RPA,1 /* set the pte */
srwi 1,1,8 /* get byte 7 of pte */
tlbld 0 /* load the dtlb */
@ -403,16 +385,16 @@ _C_LABEL(tlbdlmiss):
rfi
3: /* not found in pteg */
andi. 1,3,0x40 /* have we already done second hash? */
andi. 1,3,PTE_HID /* have we already done second hash? */
bne 5f
mfspr 2,SPR_HASH2 /* get the second pointer */
ori 3,3,0x40 /* change the compare value */
ori 3,3,PTE_HID /* change the compare value */
li 1,8
addi 2,2,-8 /* predec pointer */
b 1b
5: /* not found anywhere */
mfsrr1 3
lis 1,0x40000000@h /* set dsisr<1> to flag pte not found */
lis 1,DSISR_NOTFOUND@h /* set dsisr<1> to flag pte not found */
mtctr 0 /* restore counter */
andi. 2,3,0xffff /* clean upper srr1 */
mtsrr1 2
@ -420,7 +402,7 @@ _C_LABEL(tlbdlmiss):
mfspr 1,SPR_DMISS /* get the miss address */
mtdar 1 /* put in dar */
mfmsr 0
xoris 0,0,0x20000@h /* flip the msr<tgpr> bit */
xoris 0,0,PSL_TGPR@h /* flip the msr<tgpr> bit */
mtcrf 0x80,3 /* restore cr0 */
mtmsr 0 /* now with native gprs */
isync
@ -443,7 +425,7 @@ _C_LABEL(tlbdsmiss):
bdneq 2b /* loop if not eq */
bne 3f /* not found */
lwz 1,4(2) /* load tlb entry lower word */
andi. 3,1,0x80 /* check the C-bit */
andi. 3,1,PTE_CHG /* check the C-bit */
beq 4f
5:
mtctr 0 /* restore counter */
@ -455,10 +437,10 @@ _C_LABEL(tlbdsmiss):
rfi
3: /* not found in pteg */
andi. 1,3,0x40 /* have we already done second hash? */
andi. 1,3,PTE_HID /* have we already done second hash? */
bne 5f
mfspr 2,SPR_HASH2 /* get the second pointer */
ori 3,3,0x40 /* change the compare value */
ori 3,3,PTE_HID /* change the compare value */
li 1,8
addi 2,2,-8 /* predec pointer */
b 1b
@ -469,7 +451,8 @@ _C_LABEL(tlbdsmiss):
beq+ 8f
9: /* found, but protection violation (PP==00)*/
mfsrr1 3
lis 1,0xa000000@h /* indicate protection violation
lis 1,(DSISR_PROTECT|DSISR_STORE)@h
/* indicate protection violation
on store */
b 1f
7: /* found, PP=1x */
@ -481,12 +464,13 @@ _C_LABEL(tlbdsmiss):
bne- 9b /* protection violation */
8: /* found, set reference/change bits */
lwz 1,4(2) /* reload tlb entry */
ori 1,1,0x180
ori 1,1,(PTE_REF|PTE_CHG)
sth 1,6(2)
b 5b
5: /* not found anywhere */
mfsrr1 3
lis 1,0x42000000@h /* set dsisr<1> to flag pte not found */
lis 1,(DSISR_NOTFOUND|DSISR_STORE)@h
/* set dsisr<1> to flag pte not found */
/* dsisr<6> to flag store */
1:
mtctr 0 /* restore counter */
@ -496,7 +480,7 @@ _C_LABEL(tlbdsmiss):
mfspr 1,SPR_DMISS /* get the miss address */
mtdar 1 /* put in dar */
mfmsr 0
xoris 0,0,0x20000@h /* flip the msr<tgpr> bit */
xoris 0,0,PSL_TGPR@h /* flip the msr<tgpr> bit */
mtcrf 0x80,3 /* restore cr0 */
mtmsr 0 /* now with native gprs */
isync
@ -593,58 +577,58 @@ _C_LABEL(ipkdbsize) = .-_C_LABEL(ipkdblow)
/* Have to enable translation to allow access of kernel stack: */ \
GET_CPUINFO(31); \
mfsrr0 30; \
stw 30,savearea+24(31); /* save SRR0 */ \
stw 30,(savearea+(6*SZREG))(31); /* save SRR0 */ \
mfsrr1 30; \
stw 30,savearea+28(31); /* save SRR1 */ \
stw 30,(savearea+(7*SZREG))(31); /* save SRR1 */ \
mfmsr 30; \
ori 30,30,(PSL_DR|PSL_IR); /* turn on relocation */ \
mtmsr 30; /* stack can be accesed now */ \
isync; \
mfsprg1 31; /* get saved SP */ \
stwu 31,-FRAMELEN(1); /* save it in the callframe */ \
stw 0,FRAME_0+8(1); /* save R0 in the trapframe */ \
stw 31,FRAME_1+8(1); /* save SP in the trapframe */ \
stw 2,FRAME_2+8(1); /* save R2 in the trapframe */ \
stw 28,FRAME_LR+8(1); \
stw 29,FRAME_CR+8(1); \
stw 0,(FRAME_0+(2*SZREG))(1); /* save R0 in the trapframe */ \
stw 31,(FRAME_1+(2*SZREG))(1); /* save SP in the trapframe */ \
stw 2,(FRAME_2+(2*SZREG))(1); /* save R2 in the trapframe */ \
stw 28,(FRAME_LR+(2*SZREG))(1); \
stw 29,(FRAME_CR+(2*SZREG))(1); \
GET_CPUINFO(2); \
lmw 28,savearea(2); /* get saved r28-r31 */ \
stmw 3,FRAME_3+8(1); /* save r3-r31 */ \
lmw 28,savearea+16(2); /* get DAR/DSISR/SRR0/SRR1 */ \
stmw 3,(FRAME_3+(2*SZREG))(1); /* save r3-r31 */ \
lmw 28,(savearea+(4*SZREG))(2); /* get DAR/DSISR/SRR0/SRR1 */ \
mfxer 3; \
mfctr 4; \
mflr 5; \
andi. 5,5,0xff00; \
stw 3,FRAME_XER+8(1); \
stw 4,FRAME_CTR+8(1); \
stw 5,FRAME_EXC+8(1); \
stw 3,(FRAME_XER+(2*SZREG))(1); \
stw 4,(FRAME_CTR+(2*SZREG))(1); \
stw 5,(FRAME_EXC+(2*SZREG))(1); \
SAVE_VRSAVE(1,6); \
SAVE_MQ(1,7); \
stw 28,FRAME_DAR+8(1); \
stw 29,FRAME_DSISR+8(1); \
stw 30,FRAME_SRR0+8(1); \
stw 31,FRAME_SRR1+8(1)
stw 28,(FRAME_DAR+(2*SZREG))(1); \
stw 29,(FRAME_DSISR+(2*SZREG))(1); \
stw 30,(FRAME_SRR0+(2*SZREG))(1); \
stw 31,(FRAME_SRR1+(2*SZREG))(1)
#define FRAME_LEAVE(savearea) \
/* Now restore regs: */ \
lwz 2,FRAME_SRR0+8(1); \
lwz 3,FRAME_SRR1+8(1); \
lwz 4,FRAME_CTR+8(1); \
lwz 5,FRAME_XER+8(1); \
lwz 6,FRAME_LR+8(1); \
lwz 2,(FRAME_SRR0+(2*SZREG))(1); \
lwz 3,(FRAME_SRR1+(2*SZREG))(1); \
lwz 4,(FRAME_CTR+(2*SZREG))(1); \
lwz 5,(FRAME_XER+(2*SZREG))(1); \
lwz 6,(FRAME_LR+(2*SZREG))(1); \
RESTORE_MQ(1,8); \
RESTORE_VRSAVE(1,9); \
GET_CPUINFO(7); \
stw 2,savearea(7); \
stw 3,savearea+4(7); \
lwz 7,FRAME_CR+8(1); \
stw 3,(savearea+SZREG)(7); \
lwz 7,(FRAME_CR+(2*SZREG))(1); \
mtctr 4; \
mtxer 5; \
mtlr 6; \
mtsprg1 7; /* save cr */ \
lmw 2,FRAME_2+8(1); \
lwz 0,FRAME_0+8(1); /* restore r0 */ \
lwz 1,FRAME_1+8(1); /* restore old sp in r1 */ \
lmw 2,(FRAME_2+(2*SZREG))(1); \
lwz 0,(FRAME_0+(2*SZREG))(1); /* restore r0 */ \
lwz 1,(FRAME_1+(2*SZREG))(1); /* restore old sp in r1 */ \
mtsprg2 2; /* save r2 & r3 */ \
mtsprg3 3; \
/* Disable translation, machine check and recoverability: */ \
@ -654,7 +638,7 @@ _C_LABEL(ipkdbsize) = .-_C_LABEL(ipkdblow)
isync; \
/* Decide whether we return to user mode: */ \
GET_CPUINFO(2); \
lwz 3,savearea+4(2); \
lwz 3,(savearea+SZREG)(2); \
mtcr 3; \
bc 4,17,1f; /* branch if PSL_PR is false */ \
/* Restore user SRs */ \
@ -665,7 +649,7 @@ _C_LABEL(ipkdbsize) = .-_C_LABEL(ipkdblow)
GET_CPUINFO(2); \
lwz 3,savearea(2); \
mtsrr0 3; \
lwz 3,savearea+4(2); \
lwz 3,(savearea+SZREG)(2); \
mtsrr1 3; \
mfsprg2 2; /* restore r2 & r3 */ \
mfsprg3 3
@ -677,11 +661,11 @@ disitrap:
GET_CPUINFO(1)
lmw 30,CI_DISISAVE(1)
stmw 30,CI_TEMPSAVE(1)
lmw 30,CI_DISISAVE+8(1)
stmw 30,CI_TEMPSAVE+8(1)
lmw 30,(CI_DISISAVE+(2*SZREG))(1)
stmw 30,(CI_TEMPSAVE+(2*SZREG))(1)
mfdar 30
mfdsisr 31
stmw 30,CI_TEMPSAVE+16(1)
stmw 30,(CI_TEMPSAVE+(4*SZREG))(1)
.globl _C_LABEL(trapstart)
_C_LABEL(trapstart):
realtrap:
@ -722,7 +706,7 @@ trapexit:
andi. 3,3,~PSL_EE@l
mtmsr 3
/* Test AST pending: */
lwz 5,FRAME_SRR1+8(1)
lwz 5,(FRAME_SRR1+(2*SZREG))(1)
mtcr 5
bc 4,17,1f /* branch if PSL_PR is false */
GET_CPUINFO(3)
@ -730,7 +714,7 @@ trapexit:
andi. 4,4,1
beq 1f
li 6,EXC_AST
stw 6,FRAME_EXC+8(1)
stw 6,(FRAME_EXC+(2*SZREG))(1)
b trapagain
1:
FRAME_LEAVE(CI_TEMPSAVE)
@ -781,7 +765,7 @@ _C_LABEL(sctrapexit):
andi. 4,4,1
beq 1f
li 6,EXC_AST
stw 6,FRAME_EXC+8(1)
stw 6,(FRAME_EXC+(2*SZREG))(1)
b trapagain
1:
FRAME_LEAVE(CI_TEMPSAVE)
@ -907,7 +891,7 @@ intr_exit:
*/
decrintr:
INTRENTER
addi 3,1,8 /* intr frame -> clock frame */
addi 3,1,(2*SZREG) /* intr frame -> clock frame */
bl _C_LABEL(decr_intr)
b intr_exit
@ -944,16 +928,16 @@ ddbtrap:
or. 3,3,3
bne ddbleave
/* This wasn't for DDB, so switch to real trap: */
lwz 3,FRAME_EXC+8(1) /* save exception */
lwz 3,(FRAME_EXC+(2*SZREG))(1) /* save exception */
GET_CPUINFO(4)
stw 3,CI_DDBSAVE+8(4)
stw 3,(CI_DDBSAVE+(2*SZREG))(4)
FRAME_LEAVE(CI_DDBSAVE)
mtsprg1 1 /* prepare for entrance to realtrap */
GET_CPUINFO(1)
stmw 28,CI_TEMPSAVE(1)
mflr 28
mfcr 29
lwz 31,CI_DDBSAVE+8(1)
lwz 31,(CI_DDBSAVE+(2*SZREG))(1)
mtlr 31
mfsprg1 1
b realtrap
@ -988,21 +972,21 @@ _C_LABEL(ipkdb_trap):
ipkdbtrap:
FRAME_SETUP(ipkdbsave)
/* Call C trap code: */
addi 3,1,8
addi 3,1,(2*SZREG)
bl _C_LABEL(ipkdb_trap_glue)
or. 3,3,3
bne ipkdbleave
/* This wasn't for IPKDB, so switch to real trap: */
lwz 3,FRAME_EXC+8(1) /* save exception */
lwz 3,(FRAME_EXC+(2*SZREG))(1) /* save exception */
GET_CPUINFO(4)
stw 3,CI_IPKDBSAVE+8(4)
stw 3,(CI_IPKDBSAVE+(2*SZREG))(4)
FRAME_LEAVE(CI_IPKDBSAVE)
mtsprg1 1 /* prepare for entrance to realtrap */
GET_CPUINFO(1)
stmw 28,CI_TEMPSAVE(1)
mflr 28
mfcr 29
lwz 31,CI_IPKDBSAVE+8(1)
lwz 31,(CI_IPKDBSAVE+(2*SZREG))(1)
mtlr 31
mfsprg1 1
b realtrap