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24116fcdbe
The s390 and s390x sysdep.h files include the more generic sysdep.h. The more generic sysdep.h defines PSEUDO. This causes an annoying CPP warning saying the PSEUDO was redefined. This patch removes the warning by undefining PSEUDO before the redefinition. This is in line with what all the other machines do. --- 2013-04-06 Carlos O'Donell <carlos@redhat.com> * sysdeps/s390/s390-32/sysdep.h: Undefine PSEUDO before redefinition. * sysdeps/s390/s390-64/sysdep.h: Likewise.
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/* Assembler macros for s390.
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Copyright (C) 2000-2013 Free Software Foundation, Inc.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdeps/generic/sysdep.h>
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#ifdef __ASSEMBLER__
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/* Syntactic details of assembler. */
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/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */
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#define ALIGNARG(log2) 1<<log2
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#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
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/* Define an entry point visible from C. */
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#define ENTRY(name) \
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.globl C_SYMBOL_NAME(name); \
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.type C_SYMBOL_NAME(name),@function; \
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.align ALIGNARG(2); \
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C_LABEL(name) \
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cfi_startproc; \
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CALL_MCOUNT
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#undef END
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#define END(name) \
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cfi_endproc; \
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ASM_SIZE_DIRECTIVE(name) \
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/* If compiled for profiling, call `mcount' at the start of each function. */
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#ifdef PROF
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#ifdef PIC
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#define CALL_MCOUNT \
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lr 0,14 ; bras 14,.+12 ; .long _GLOBAL_OFFSET_TABLE_ - . ; .long 0f-. ; \
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lr 1,14 ; al 1,4(14) ; al 14,0(14) ; l 14,_mcount@GOT(14) ; \
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basr 14,14 ; lr 14,0 ; .data ; .align 4 ; 0: .long 0 ; .text ;
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#else
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#define CALL_MCOUNT \
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lr 0,14 ; bras 14,.+12 ; .long _mcount ; .long 0f ; \
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l 1,4(14) ; l 14,0(14) ; basr 14,14 ; lr 14,0 ; \
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.data ; .align 4 ; 0: .long 0 ; .text ;
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#endif
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#else
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#define CALL_MCOUNT /* Do nothing. */
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#endif
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/* Since C identifiers are not normally prefixed with an underscore
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on this system, the asm identifier `syscall_error' intrudes on the
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C name space. Make sure we use an innocuous name. */
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#define syscall_error __syscall_error
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#define mcount _mcount
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#undef PSEUDO
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#define PSEUDO(name, syscall_name, args) \
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lose: SYSCALL_PIC_SETUP \
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basr %r1,0; \
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0: al %r1,1f-0b(%r1); \
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br %r1; \
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1: .long JUMPTARGET(syscall_error) - 0b; \
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.globl syscall_error; \
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ENTRY (name) \
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DO_CALL (syscall_name, args); \
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jm lose
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#undef PSEUDO_END
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#define PSEUDO_END(name) \
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END (name)
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#undef JUMPTARGET
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#ifdef PIC
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#define JUMPTARGET(name) name##@PLT
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#define SYSCALL_PIC_SETUP \
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bras %r12,1f \
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0: .long _GLOBAL_OFFSET_TABLE_-0b \
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1: al %r12,0(%r12)
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#else
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#define JUMPTARGET(name) name
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#define SYSCALL_PIC_SETUP /* Nothing. */
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#endif
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/* Local label name for asm code. */
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#ifndef L
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#define L(name) .L##name
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#endif
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#endif /* __ASSEMBLER__ */
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