mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-18 19:10:06 +00:00
2ce1a10fd6
* sysdeps/posix/getaddrinfo.c (gaih_inet): Set no_inet6_date alse if only PF_INET address is needed. * nss/getXXbyYY_r.c: Make sure we always return a nonzero value in case of an error.
259 lines
6.9 KiB
C
259 lines
6.9 KiB
C
/* Assembly macros for 64-bit PowerPC.
|
|
Copyright (C) 2002, 2003 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#ifdef __ASSEMBLER__
|
|
|
|
#include <sysdeps/powerpc/sysdep.h>
|
|
|
|
#ifdef __ELF__
|
|
/* If compiled for profiling, call `_mcount' at the start of each function.
|
|
see ppc-mcount.S for more details. */
|
|
#ifdef PROF
|
|
/* The mcount code relies on a the return address being on the stack
|
|
to locate our caller and so it can restore it; so store one just
|
|
for its benefit. */
|
|
#ifdef PIC
|
|
#ifdef SYSV_ELF_PROFILING
|
|
#define CALL_MCOUNT \
|
|
.pushsection; \
|
|
.section ".data"; \
|
|
.align ALIGNARG(2); \
|
|
__mcount: \
|
|
.long 0; \
|
|
.previous; \
|
|
.section ".toc","aw"; \
|
|
.LC__mcount:; \
|
|
.tc __mcount[TC],__mcount; \
|
|
.previous; \
|
|
mflr r0; \
|
|
std r0,16(r1); \
|
|
ld r0,.LC__mcount@toc(r2); \
|
|
bl JUMPTARGET(_mcount);
|
|
#else /* SYSV_ELF_PROFILING */
|
|
#define CALL_MCOUNT \
|
|
mflr r0; \
|
|
std r0,16(r1); \
|
|
bl JUMPTARGET(_mcount);
|
|
#endif /* SYSV_ELF_PROFILING */
|
|
#else /* PIC */
|
|
#ifdef SYSV_ELF_PROFILING
|
|
#define CALL_MCOUNT \
|
|
.pushsection; \
|
|
.section ".data"; \
|
|
.align ALIGNARG(2); \
|
|
__mcount: \
|
|
.long 0; \
|
|
.previous; \
|
|
.section ".toc","aw"; \
|
|
.LC__mcount:; \
|
|
.tc __mcount[TC],__mcount; \
|
|
.previous; \
|
|
mflr r0; \
|
|
std r0,16(r1); \
|
|
ld r0,.LC__mcount@toc(r2); \
|
|
bl JUMPTARGET(_mcount);
|
|
#else /* SYSV_ELF_PROFILING */
|
|
#define CALL_MCOUNT \
|
|
mflr r0; \
|
|
std r0,16(r1); \
|
|
bl JUMPTARGET(_mcount);
|
|
#endif /* SYSV_ELF_PROFILING */
|
|
#endif /* PIC */
|
|
#else /* PROF */
|
|
#define CALL_MCOUNT /* Do nothing. */
|
|
#endif /* PROF */
|
|
|
|
#define DOT_LABEL(X) .##X
|
|
|
|
#define ENTRY(name) \
|
|
.section ".text"; \
|
|
.align ALIGNARG(2); \
|
|
.globl DOT_LABEL(name); \
|
|
.type DOT_LABEL(name),@function ; \
|
|
.globl name; \
|
|
.section ".opd","aw"; \
|
|
name##: ; \
|
|
.quad DOT_LABEL(name) ; \
|
|
.quad .TOC.@tocbase, 0; \
|
|
.previous; \
|
|
DOT_LABEL(name):
|
|
|
|
|
|
#define EALIGN_W_0 /* No words to insert. */
|
|
#define EALIGN_W_1 nop
|
|
#define EALIGN_W_2 nop;nop
|
|
#define EALIGN_W_3 nop;nop;nop
|
|
#define EALIGN_W_4 EALIGN_W_3;nop
|
|
#define EALIGN_W_5 EALIGN_W_4;nop
|
|
#define EALIGN_W_6 EALIGN_W_5;nop
|
|
#define EALIGN_W_7 EALIGN_W_6;nop
|
|
|
|
/* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes
|
|
past a 2^align boundary. */
|
|
#ifdef PROF
|
|
#define EALIGN(name, alignt, words) \
|
|
.section ".text"; \
|
|
.globl DOT_LABEL(name); \
|
|
.type DOT_LABEL(name),@function ; \
|
|
.globl name; \
|
|
.section ".opd","aw"; \
|
|
name##: ; \
|
|
.quad DOT_LABEL(name) ; \
|
|
.quad .TOC.@tocbase, 0; \
|
|
.previous; \
|
|
.align ALIGNARG(alignt); \
|
|
EALIGN_W_##words; \
|
|
DOT_LABEL(name): \
|
|
CALL_MCOUNT \
|
|
b 0f; \
|
|
.align ALIGNARG(alignt); \
|
|
EALIGN_W_##words; \
|
|
0:
|
|
#else /* PROF */
|
|
#define EALIGN(name, alignt, words) \
|
|
.section ".text"; \
|
|
.globl DOT_LABEL(name); \
|
|
.type DOT_LABEL(name),@function ; \
|
|
.globl name; \
|
|
.section ".opd","aw"; \
|
|
name##: ; \
|
|
.quad DOT_LABEL(name) ; \
|
|
.quad .TOC.@tocbase, 0; \
|
|
.previous; \
|
|
.align ALIGNARG(alignt); \
|
|
EALIGN_W_##words; \
|
|
DOT_LABEL(name):
|
|
#endif
|
|
|
|
/* Local labels stripped out by the linker. */
|
|
#undef L
|
|
#define L(x) .L##x
|
|
|
|
#define tostring(s) #s
|
|
#define stringify(s) tostring(s)
|
|
#define XGLUE(a,b) a##b
|
|
#define GLUE(a,b) XGLUE(a,b)
|
|
#define LT_LABEL(name) GLUE(.LT,name)
|
|
#define LT_LABELSUFFIX(name,suffix) GLUE(GLUE(.LT,name),suffix)
|
|
|
|
/* Support Traceback tables */
|
|
#define TB_ASM 0x000c000000000000
|
|
#define TB_GLOBALLINK 0x0000800000000000
|
|
#define TB_IS_EPROL 0x0000400000000000
|
|
#define TB_HAS_TBOFF 0x0000200000000000
|
|
#define TB_INT_PROC 0x0000100000000000
|
|
#define TB_HAS_CTL 0x0000080000000000
|
|
#define TB_TOCLESS 0x0000040000000000
|
|
#define TB_FP_PRESENT 0x0000020000000000
|
|
#define TB_LOG_ABORT 0x0000010000000000
|
|
#define TB_INT_HANDL 0x0000008000000000
|
|
#define TB_NAME_PRESENT 0x0000004000000000
|
|
#define TB_USES_ALLOCA 0x0000002000000000
|
|
#define TB_SAVES_CR 0x0000000200000000
|
|
#define TB_SAVES_LR 0x0000000100000000
|
|
#define TB_STORES_BC 0x0000000080000000
|
|
#define TB_FIXUP 0x0000000040000000
|
|
#define TB_FP_SAVED(fprs) (((fprs) & 0x3f) << 24)
|
|
#define TB_GPR_SAVED(gprs) (((fprs) & 0x3f) << 16)
|
|
#define TB_FIXEDPARMS(parms) (((parms) & 0xff) << 8)
|
|
#define TB_FLOATPARMS(parms) (((parms) & 0x7f) << 1)
|
|
#define TB_PARMSONSTK 0x0000000000000001
|
|
|
|
#define PPC_HIGHER(v) (((v) >> 32) & 0xffff)
|
|
#define TB_DEFAULT TB_ASM | TB_HAS_TBOFF | TB_NAME_PRESENT
|
|
|
|
#define TRACEBACK(name) \
|
|
LT_LABEL(name): ; \
|
|
.long 0 ; \
|
|
.quad TB_DEFAULT ; \
|
|
.long LT_LABEL(name)-DOT_LABEL(name) ; \
|
|
.short LT_LABELSUFFIX(name,_name_end)-LT_LABELSUFFIX(name,_name_start) ; \
|
|
LT_LABELSUFFIX(name,_name_start): ;\
|
|
.ascii stringify(name) ; \
|
|
LT_LABELSUFFIX(name,_name_end): ; \
|
|
.align 2 ;
|
|
|
|
#define TRACEBACK_MASK(name,mask) \
|
|
LT_LABEL(name): ; \
|
|
.long 0 ; \
|
|
.quad TB_DEFAULT | mask ; \
|
|
.long LT_LABEL(name)-DOT_LABEL(name) ; \
|
|
.short LT_LABELSUFFIX(name,_name_end)-LT_LABELSUFFIX(name,_name_start) ; \
|
|
LT_LABELSUFFIX(name,_name_start): ;\
|
|
.ascii stringify(name) ; \
|
|
LT_LABELSUFFIX(name,_name_end): ; \
|
|
.align 2 ;
|
|
|
|
/* END generates Traceback tables */
|
|
#undef END
|
|
#define END(name) \
|
|
TRACEBACK(name) \
|
|
ASM_SIZE_DIRECTIVE(name)
|
|
|
|
/* This form supports more informative traceback tables */
|
|
#define END_GEN_TB(name,mask) \
|
|
TRACEBACK_MASK(name,mask) \
|
|
ASM_SIZE_DIRECTIVE(name)
|
|
|
|
|
|
#define DO_CALL(syscall) \
|
|
li 0,syscall; \
|
|
sc
|
|
|
|
/* ppc64 is always PIC */
|
|
#undef JUMPTARGET
|
|
#define JUMPTARGET(name) DOT_LABEL(name)
|
|
|
|
#define PSEUDO(name, syscall_name, args) \
|
|
.section ".text"; \
|
|
ENTRY (name) \
|
|
DO_CALL (SYS_ify (syscall_name));
|
|
|
|
#define PSEUDO_RET \
|
|
bnslr+; \
|
|
b JUMPTARGET(__syscall_error)
|
|
|
|
#define ret PSEUDO_RET
|
|
|
|
#undef PSEUDO_END
|
|
#define PSEUDO_END(name) \
|
|
END (name)
|
|
|
|
#define PSEUDO_NOERRNO(name, syscall_name, args) \
|
|
.section ".text"; \
|
|
ENTRY (name) \
|
|
DO_CALL (SYS_ify (syscall_name));
|
|
|
|
#define PSEUDO_RET_NOERRNO \
|
|
blr
|
|
|
|
#define ret_NOERRNO PSEUDO_RET_NOERRNO
|
|
|
|
#undef PSEUDO_END_NOERRNO
|
|
#define PSEUDO_END_NOERRNO(name) \
|
|
END (name)
|
|
|
|
/* Label in text section. */
|
|
/* ppc64 function descriptors which requires . notation */
|
|
#define C_TEXT(name) .##name
|
|
|
|
#endif /* __ELF__ */
|
|
|
|
#endif /* __ASSEMBLER__ */
|