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hppa: Add cfi direcvtives.

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We add cfi directives to the syscall assembly.
This commit is contained in:
Carlos O'Donell 2012-10-29 23:31:55 -04:00
parent e22f413005
commit 236bb0623d
2 changed files with 18 additions and 1 deletions
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6
ports/ChangeLog.hppa
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@ -1,5 +1,11 @@
2012-10-29 Carlos O'Donell <carlos@systemhalted.org>
* sysdeps/unix/sysv/linux/hppa/sysdep.h (ENTRY): Add cfi_startproc.
Use .cfi_offset for rp store.
(ENTRY_LEAF): Likewise.
(END) Add cfi_Endproc.
(DO_CALL): Add cfi directives.
* sysdeps/unix/sysv/linux/hppa/sysdep.h: Document register clobbering.
[PIC](TREG, SAVE_PIC, LOAD_PIC, TREG_ASM, SAVE_ASM_PIC, LOAD_ASM_PIC
CLOB_TREG, PIC_REG_DEF, PIC_REG_USE): Move...

13
ports/sysdeps/unix/sysv/linux/hppa/sysdep.h
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@ -120,12 +120,14 @@
.align ALIGNARG(4) ASM_LINE_SEP \
.export C_SYMBOL_NAME(name) ASM_LINE_SEP \
.type C_SYMBOL_NAME(name),@function ASM_LINE_SEP \
cfi_startproc ASM_LINE_SEP \
C_LABEL(name) ASM_LINE_SEP \
.PROC ASM_LINE_SEP \
.CALLINFO FRAME=64,CALLS,SAVE_RP,ENTRY_GR=3 ASM_LINE_SEP \
.ENTRY ASM_LINE_SEP \
/* SAVE_RP says we do */ ASM_LINE_SEP \
stw %rp, -20(%sr0,%sp) ASM_LINE_SEP \
.cfi_offset 2, -20 ASM_LINE_SEP \
/*FIXME: Call mcount? (carefull with stack!) */
/* Some syscall wrappers do not call other functions, and
@ -135,18 +137,21 @@
.align ALIGNARG(4) ASM_LINE_SEP \
.export C_SYMBOL_NAME(name) ASM_LINE_SEP \
.type C_SYMBOL_NAME(name),@function ASM_LINE_SEP \
cfi_startproc ASM_LINE_SEP \
C_LABEL(name) ASM_LINE_SEP \
.PROC ASM_LINE_SEP \
.CALLINFO FRAME=64,NO_CALLS,SAVE_RP,ENTRY_GR=3 ASM_LINE_SEP \
.ENTRY ASM_LINE_SEP \
/* SAVE_RP says we do */ ASM_LINE_SEP \
stw %rp, -20(%sr0,%sp) ASM_LINE_SEP \
.cfi_offset 2, -20 ASM_LINE_SEP \
/*FIXME: Call mcount? (carefull with stack!) */
#undef END
#define END(name) \
.EXIT ASM_LINE_SEP \
.PROCEND ASM_LINE_SEP \
cfi_endproc ASM_LINE_SEP \
.size C_SYMBOL_NAME(name), .-C_SYMBOL_NAME(name) ASM_LINE_SEP
/* If compiled for profiling, call `mcount' at the start
@ -278,8 +283,12 @@
#define DO_CALL(syscall_name, args) \
/* Create a frame */ ASM_LINE_SEP \
stwm TREG, 64(%sp) 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 \
/* Save r19 */ ASM_LINE_SEP \
SAVE_PIC(TREG) ASM_LINE_SEP \
/* Do syscall, delay loads # */ ASM_LINE_SEP \
@ -302,8 +311,10 @@
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
ldw -20(%sp),%rp ASM_LINE_SEP \
.cfi_restore 2 ASM_LINE_SEP
/* We do nothing with the return, except hand it back to someone else */
#undef DO_CALL_NOERRNO