1 /* Assembler macros for SH. 2 Copyright (C) 1999-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 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 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #include <sysdeps/generic/sysdep.h> 20 21 #ifdef __ASSEMBLER__ 22 23 /* Syntactic details of assembler. */ 24 25 #define ALIGNARG(log2) log2 26 #define ASM_SIZE_DIRECTIVE(name) .size name,.-name 27 28 #ifdef SHARED 29 #define PLTJMP(_x) _x##@PLT 30 #else 31 #define PLTJMP(_x) _x 32 #endif 33 34 35 /* Define an entry point visible from C. */ 36 #define ENTRY(name) \ 37 .globl C_SYMBOL_NAME(name); \ 38 .type C_SYMBOL_NAME(name),@function; \ 39 .align ALIGNARG(5); \ 40 C_LABEL(name) \ 41 cfi_startproc; \ 42 CALL_MCOUNT 43 44 #undef END 45 #define END(name) \ 46 cfi_endproc; \ 47 ASM_SIZE_DIRECTIVE(C_SYMBOL_NAME(name)) 48 49 /* If compiled for profiling, call `mcount' at the start of each function. */ 50 #ifdef PROF 51 #define CALL_MCOUNT \ 52 mov.l 1f,r1; \ 53 sts.l pr,@-r15; \ 54 cfi_adjust_cfa_offset (4); \ 55 cfi_rel_offset (pr, 0); \ 56 mova 2f,r0; \ 57 jmp @r1; \ 58 lds r0,pr; \ 59 .align 2; \ 60 1: .long mcount; \ 61 2: lds.l @r15+,pr; \ 62 cfi_adjust_cfa_offset (-4); \ 63 cfi_restore (pr) 64 65 #else 66 #define CALL_MCOUNT /* Do nothing. */ 67 #endif 68 69 /* Since C identifiers are not normally prefixed with an underscore 70 on this system, the asm identifier `syscall_error' intrudes on the 71 C name space. Make sure we use an innocuous name. */ 72 #define syscall_error __syscall_error 73 #define mcount _mcount 74 75 #endif /* __ASSEMBLER__ */ 76