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Fix syscall cancellation on hppa.

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This commit is contained in:
John David Anglin
2017-07-16 11:58:01 -04:00
parent a363f70336
commit d71400dca6
3 changed files with 46 additions and 39 deletions
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15
sysdeps/unix/sysv/linux/hppa/sysdep.h
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@ -49,11 +49,9 @@
to another function */
#define TREG 4
#define SAVE_PIC(SREG) \
copy %r19, SREG ASM_LINE_SEP \
.cfi_register 19, SREG
copy %r19, SREG
#define LOAD_PIC(LREG) \
copy LREG , %r19 ASM_LINE_SEP \
.cfi_restore 19
copy LREG , %r19
/* Inline assembly defines */
#define TREG_ASM "%r4" /* Cant clobber r3, it holds framemarker */
#define SAVE_ASM_PIC " copy %%r19, %" TREG_ASM "\n"
@ -292,12 +290,11 @@
#define DO_CALL(syscall_name, args) \
/* Create a frame */ ASM_LINE_SEP \
stwm TREG, 64(%sp) ASM_LINE_SEP \
.cfi_def_cfa_offset -64 ASM_LINE_SEP \
.cfi_offset TREG, 0 ASM_LINE_SEP \
.cfi_adjust_cfa_offset 64 ASM_LINE_SEP \
stw %sp, -4(%sp) ASM_LINE_SEP \
.cfi_offset 30, -4 ASM_LINE_SEP \
stw %r19, -32(%sp) ASM_LINE_SEP \
.cfi_offset 19, -32 ASM_LINE_SEP \
.cfi_offset 19, 32 ASM_LINE_SEP \
/* Save r19 */ ASM_LINE_SEP \
SAVE_PIC(TREG) ASM_LINE_SEP \
/* Do syscall, delay loads # */ ASM_LINE_SEP \
@ -320,10 +317,8 @@
L(pre_end): ASM_LINE_SEP \
/* Restore our frame, restoring TREG */ ASM_LINE_SEP \
ldwm -64(%sp), TREG ASM_LINE_SEP \
.cfi_adjust_cfa_offset -64 ASM_LINE_SEP \
/* Restore return pointer */ ASM_LINE_SEP \
ldw -20(%sp),%rp ASM_LINE_SEP \
.cfi_restore 2 ASM_LINE_SEP
ldw -20(%sp),%rp ASM_LINE_SEP
/* We do nothing with the return, except hand it back to someone else */
#undef DO_CALL_NOERRNO