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-rw-r--r--sysdeps/s390/sysdep.h121
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diff --git a/sysdeps/s390/sysdep.h b/sysdeps/s390/sysdep.h
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+/* Assembler macros for s390.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
+ 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdeps/generic/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+/* Syntactic details of assembler. */
+
+#ifdef HAVE_ELF
+
+/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */
+#define ALIGNARG(log2) 1<<log2
+/* For ELF we need the `.type' directive to make shared libs work right. */
+#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
+#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
+
+/* In ELF C symbols are asm symbols. */
+#undef NO_UNDERSCORES
+#define NO_UNDERSCORES
+
+#else
+
+#define ALIGNARG(log2) log2
+#define ASM_TYPE_DIRECTIVE(name,type) /* Nothing is specified. */
+#define ASM_SIZE_DIRECTIVE(name) /* Nothing is specified. */
+
+#endif
+
+
+/* Define an entry point visible from C. */
+#define ENTRY(name) \
+ ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
+ ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \
+ .align ALIGNARG(2); \
+ C_LABEL(name) \
+ CALL_MCOUNT
+
+#undef END
+#define END(name) \
+ ASM_SIZE_DIRECTIVE(name) \
+
+/* If compiled for profiling, call `mcount' at the start of each function. */
+#ifdef PROF
+#ifdef PIC
+#define CALL_MCOUNT \
+ lr 0,14 ; bras 14,.+12 ; .long _GLOBAL_OFFSET_TABLE_ - . ; .long 0f-. ; \
+ lr 1,14 ; al 1,4(14) ; al 14,0(14) ; l 14,_mcount@GOT(14) ; \
+ basr 14,14 ; lr 14,0 ; .data ; .align 4 ; 0: .long 0 ; .text ;
+#else
+#define CALL_MCOUNT \
+ lr 0,14 ; bras 14,.+12 ; .long _mcount ; .long 0f ; \
+ l 1,4(14) ; l 14,0(14) ; basr 14,14 ; lr 14,0 ; \
+ .data ; .align 4 ; 0: .long 0 ; .text ;
+#endif
+#else
+#define CALL_MCOUNT /* Do nothing. */
+#endif
+
+#ifdef NO_UNDERSCORES
+/* Since C identifiers are not normally prefixed with an underscore
+ on this system, the asm identifier `syscall_error' intrudes on the
+ C name space. Make sure we use an innocuous name. */
+#define syscall_error __syscall_error
+#define mcount _mcount
+#endif
+
+#define PSEUDO(name, syscall_name, args) \
+lose: SYSCALL_PIC_SETUP \
+ JUMPTARGET(syscall_error) \
+ .globl syscall_error; \
+ ENTRY (name) \
+ DO_CALL (syscall_name, args); \
+ jm lose
+
+#undef PSEUDO_END
+#define PSEUDO_END(name) \
+ END (name)
+
+#ifdef PIC
+#define JUMPTARGET(name) \
+ basr %r1,0 \
+0: al %r1,1f-0b(0,%r1) \
+ br %r1 \
+1: .long name##@PLT - 0b
+#define SYSCALL_PIC_SETUP \
+ bras %r12,1f \
+0: .long _GLOBAL_OFFSET_TABLE_-0b \
+1: al %r12,0(%r12)
+#else
+#define JUMPTARGET(name) \
+ basr %r1,0 \
+0: al %r1,1f-0b(0,%r1) \
+ br %r1 \
+1: .long name - 0b
+#define SYSCALL_PIC_SETUP /* Nothing. */
+#endif
+
+/* Local label name for asm code. */
+#ifndef L
+#define L(name) name
+#endif
+
+#endif /* __ASSEMBLER__ */