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Fix some comments.

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Set up stack frames in copyin/copyout and friends (if DDB is defined) so
that ddb stack traces can trace through them.
This commit is contained in:
scw 2003-03-19 11:34:28 +00:00
parent 7c18481cf2
commit 2bce28091c
1 changed files with 85 additions and 3 deletions
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88
sys/arch/sh5/sh5/locore_subr.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore_subr.S,v 1.17 2003/03/13 13:44:19 scw Exp $ */
/* $NetBSD: locore_subr.S,v 1.18 2003/03/19 11:34:28 scw Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
@ -64,8 +64,6 @@
Lsh5_init_env:
/*
* Fix up the vector table.
* Note: For now, we don't touch RESVEC on the assumption that
* a ROM-based debugger is being used.
*/
LEA(_C_LABEL(sh5_vector_table), r0)
putcon r0, vbr
@ -82,6 +80,8 @@ Lsh5_init_env:
/*
* If we have an FPU, ensure it's quiescent
* XXX: The kernel currently requires an FPU for certain
* operations.
*/
getcon sr, r0
pta/u 1f, tr0
@ -342,7 +342,11 @@ ENTRY_NOPROFILE(splraise)
* r2 r3 r4
*/
ENTRY(copyout)
#ifdef DDB
LINK_FRAME(0)
#else
add r18, r63, r61
#endif
movi EFAULT, r60 /* Assume there was a problem */
pta/u Lcopyexit, tr1
bge/u r63, r4, tr1 /* Return EFAULT if len <= 0 */
@ -404,7 +408,11 @@ ENTRY(copyout)
* r2 r3 r4
*/
ENTRY(copyin)
#ifdef DDB
LINK_FRAME(0)
#else
add r18, r63, r61
#endif
movi EFAULT, r60 /* Assume there was a problem */
pta/u Lcopyexit, tr1
bge/u r63, r4, tr1 /* Return EFAULT if len <= 0 */
@ -461,7 +469,12 @@ Lcopyerr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r63 /* Clear pcb_onfault */
Lcopyexit:
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#else
ptabs/l r61, tr0
#endif
or r60, r63, r2 /* Copy error code */
blink tr0, r63
@ -473,7 +486,11 @@ Lcopyexit:
* r2 r3 r4 r5
*/
ENTRY(copyoutstr)
#ifdef DDB
LINK_FRAME(0)
#else
ptabs/u r18, tr0
#endif
pta/u Lcopystrerr, tr3
movi EFAULT, r6 /* Assume the worst */
movi 0, r7
@ -518,7 +535,11 @@ ENTRY(copyoutstr)
* r2 r3 r4 r5
*/
ENTRY(copyinstr)
#ifdef DDB
LINK_FRAME(0)
#else
ptabs/u r18, tr0
#endif
pta/u Lcopystrerr, tr3
movi EFAULT, r6 /* Assume the worst */
movi 0, r7
@ -563,6 +584,10 @@ Lcopystrerr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r63 /* Clear pcb_onfault */
or r6, r63, r2 /* Grab return code */
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#endif
beq/u r5, r63, tr0 /* Just return if "done" == NULL */
STPTR r5, 0, r7 /* NOTE: sizeof(size_t) = sizeof(ptr) */
blink tr0, r63
@ -600,7 +625,11 @@ ENTRY(copystr)
* r2 r3 r4
*/
ENTRY(kcopy)
#ifdef DDB
LINK_FRAME(0)
#else
add r18, r63, r61
#endif
movi EFAULT, r60 /* Assume there was a problem */
pta/u Lkcopyexit, tr1
bge/u r63, r4, tr1 /* Return EFAULT if len <= 0 */
@ -654,7 +683,12 @@ Lkcopyerr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r6 /* Restore pcb_onfault */
Lkcopyexit:
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#else
ptabs/l r61, tr0
#endif
or r60, r63, r2 /* Copy error code */
blink tr0, r63
@ -668,7 +702,11 @@ Lkcopyexit:
*/
ENTRY(subyte)
ALTENTRY(suibyte)
#ifdef DDB
LINK_FRAME(0)
#else
ptabs/l r18, tr0
#endif
pta/u Lsubexit, tr1
movi EFAULT, r5 /* Assume there was a problem */
#ifndef _LP64
@ -690,6 +728,10 @@ Lsuberr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r8 /* Clear pcb_onfault */
Lsubexit:
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#endif
or r5, r63, r2 /* Copy error code */
blink tr0, r63
@ -703,7 +745,11 @@ Lsubexit:
*/
ENTRY(susword)
ALTENTRY(suisword)
#ifdef DDB
LINK_FRAME(0)
#else
ptabs/l r18, tr0
#endif
pta/u Lsusexit, tr1
movi EFAULT, r5 /* Assume there was a problem */
#ifndef _LP64
@ -725,6 +771,10 @@ Lsuserr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r8 /* Clear pcb_onfault */
Lsusexit:
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#endif
or r5, r63, r2 /* Copy error code */
blink tr0, r63
@ -738,7 +788,11 @@ Lsusexit:
*/
ENTRY(suword)
ALTENTRY(suiword)
#ifdef DDB
LINK_FRAME(0)
#else
ptabs/l r18, tr0
#endif
pta/u Lsuwexit, tr1
movi EFAULT, r5 /* Assume there was a problem */
#ifndef _LP64
@ -760,6 +814,10 @@ Lsuwerr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r8 /* Clear pcb_onfault */
Lsuwexit:
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#endif
or r5, r63, r2 /* Copy error code */
blink tr0, r63
@ -773,7 +831,11 @@ Lsuwexit:
*/
ENTRY(fubyte)
ALTENTRY(fuibyte)
#ifdef DDB
LINK_FRAME(0)
#else
ptabs/l r18, tr0
#endif
pta/u Lfubexit, tr1
movi -1, r5 /* Assume there was a problem */
#ifndef _LP64
@ -794,6 +856,10 @@ Lfuberr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r8 /* Clear pcb_onfault */
Lfubexit:
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#endif
or r5, r63, r2 /* Copy result */
blink tr0, r63
@ -807,7 +873,11 @@ Lfubexit:
*/
ENTRY(fusword)
ALTENTRY(fuisword)
#ifdef DDB
LINK_FRAME(0)
#else
ptabs/l r18, tr0
#endif
pta/u Lfusexit, tr1
movi -1, r5 /* Assume there was a problem */
#ifndef _LP64
@ -828,6 +898,10 @@ Lfuserr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r8 /* Clear pcb_onfault */
Lfusexit:
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#endif
or r5, r63, r2 /* Copy result */
blink tr0, r63
@ -841,7 +915,11 @@ Lfusexit:
*/
ENTRY(fuword)
ALTENTRY(fuiword)
#ifdef DDB
LINK_FRAME(0)
#else
ptabs/l r18, tr0
#endif
pta/u Lfuwexit, tr1
movi -1, r5 /* Assume there was a problem */
#ifndef _LP64
@ -862,6 +940,10 @@ Lfuwerr:
LDPTR r0, CI_CURPCB, r0
STPTR r0, PCB_ONFAULT, r8 /* Clear pcb_onfault */
Lfuwexit:
#ifdef DDB
UNLINK_FRAME(0)
ptabs/l r18, tr0
#endif
or r5, r63, r2 /* Copy result */
blink tr0, r63