1 /* Assembler macros for ARM.
2 Copyright (C) 1997, 1998 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <sysdeps/generic/sysdep.h>
24 /* Syntactic details of assembler. */
28 /* ELF uses byte-counts for .align, most others use log2 of count of bytes. */
29 #define ALIGNARG(log2) 1<<log2
30 /* For ELF we need the `.type' directive to make shared libs work right. */
31 #define ASM_TYPE_DIRECTIVE(name,typearg) .type name,%##typearg;
32 #define ASM_SIZE_DIRECTIVE(name) .size name,.-name
34 /* In ELF C symbols are asm symbols. */
36 #define NO_UNDERSCORES
38 #define PLTJMP(_x) _x##(PLT)
42 #define ALIGNARG(log2) log2
43 #define ASM_TYPE_DIRECTIVE(name,type) /* Nothing is specified. */
44 #define ASM_SIZE_DIRECTIVE(name) /* Nothing is specified. */
50 /* APCS-32 doesn't preserve the condition codes across function call. */
52 #define LOADREGS(cond, base, reglist...)\
53 ldm##cond base,reglist
54 #define RETINSTR(instr, regs...)\
57 #define LOADREGS(cond, base, reglist...)\
58 ldm##cond base,reglist^
59 #define RETINSTR(instr, regs...)\
63 /* Define an entry point visible from C. */
65 ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
66 ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),function) \
73 ASM_SIZE_DIRECTIVE(name)
75 /* If compiled for profiling, call `mcount' at the start of each function. */
77 /* The mcount code relies on a normal frame pointer being on the stack
78 to locate our caller, so push one just for its benefit. */
80 #error Profiling not supported.
82 #define CALL_MCOUNT /* Do nothing. */
86 /* Since C identifiers are not normally prefixed with an underscore
87 on this system, the asm identifier `syscall_error' intrudes on the
88 C name space. Make sure we use an innocuous name. */
89 #define syscall_error __syscall_error
90 #define mcount _mcount
93 #endif /* ASSEMBLER */