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PowerPC64 FRAME_PARM_SAVE

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I think FRAME_PARM[1-9]_SAVE confuse the code, particularly
FRAME_PARM9_SAVE.  There are only 8 parameter save slots!

	* sysdeps/powerpc/powerpc64/sysdep.h: (FRAME_BACKCHAIN,
	FRAME_CR_SAVE, FRAME_LR_SAVE): Move out of conditional.
	(FRAME_PARM1_SAVE, FRAME_PARM2_SAVE, FRAME_PARM3_SAVE,
	FRAME_PARM4_SAVE, FRAME_PARM5_SAVE, FRAME_PARM6_SAVE,
	FRAME_PARM7_SAVE, FRAME_PARM8_SAVE, FRAME_PARM9_SAVE): Delete.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Replace
	uses of FRAME_PARM[1-9]_SAVE with FRAME_PARM_SAVE plus offset.
This commit is contained in:
Alan Modra
2017-06-14 10:43:33 +09:30
parent dd8854361b
commit fb499eb04e
3 changed files with 26 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S
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@@ -23,20 +23,20 @@
#include "ucontext_i.h"
#include <asm/errno.h>
ENTRY(__makecontext)
ENTRY (__makecontext)
CALL_MCOUNT 3
/* Save parameters into the parameter save area of callers frame. */
std r3,FRAME_PARM1_SAVE(r1) /* ucontext_t *ucp */
std r4,FRAME_PARM2_SAVE(r1) /* void (*func)(void) */
std r5,FRAME_PARM3_SAVE(r1) /* int argc */
std r6,FRAME_PARM4_SAVE(r1) /* ... */
std r7,FRAME_PARM5_SAVE(r1)
std r8,FRAME_PARM6_SAVE(r1)
std r9,FRAME_PARM7_SAVE(r1)
std r10,FRAME_PARM8_SAVE(r1)
std r3,FRAME_PARM_SAVE+0(r1) /* ucontext_t *ucp */
std r4,FRAME_PARM_SAVE+8(r1) /* void (*func)(void) */
std r5,FRAME_PARM_SAVE+16(r1) /* int argc */
std r6,FRAME_PARM_SAVE+24(r1) /* ... */
std r7,FRAME_PARM_SAVE+32(r1)
std r8,FRAME_PARM_SAVE+40(r1)
std r9,FRAME_PARM_SAVE+48(r1)
std r10,FRAME_PARM_SAVE+56(r1)
mflr r0
/* Get the address of the target functions first parameter. */
addi r6,r1,FRAME_PARM4_SAVE
addi r6,r1,FRAME_PARM_SAVE+24
std r0,FRAME_LR_SAVE(r1)
cfi_offset (lr, FRAME_LR_SAVE)
stdu r1,-128(r1)
@@ -55,7 +55,7 @@ ENTRY(__makecontext)
clrrdi r7,r7,4
li r0,0
stdu r0,-64(r7)
std r3,FRAME_PARM1_SAVE(r7) /* Store context in dummy parm1. */
std r3,FRAME_PARM_SAVE(r7) /* Store context in dummy parm1. */
mflr r0
std r2,FRAME_TOC_SAVE(r7) /* Store the TOC pointer for later. */
std r0,FRAME_LR_SAVE(r7)
@@ -102,7 +102,7 @@ L(parmloop2):
addi r0,r5,-8
ble cr1,L(noparms)
mtctr r0
addi r9,r8,FRAME_PARM9_SAVE-8
addi r9,r8,FRAME_PARM_SAVE+64-8
L(parmloop):
ldu r0,8(r7)
stdu r0,8(r9)
@@ -148,7 +148,7 @@ L(noparms):
L(exitcode):
/* Recover the ucontext and TOC from the dummy frame. */
ld r1,FRAME_BACKCHAIN(r1) /* Unstack the parameter save area frame. */
ld r3,FRAME_PARM1_SAVE(r1)
ld r3,FRAME_PARM_SAVE(r1)
ld r2,FRAME_TOC_SAVE(r1)
ld r3,UCONTEXT_LINK(r3) /* Load the resume context. */
cmpdi r3,0