| 1 | /* Assembler macros for C-SKY. |
| 2 | Copyright (C) 2018-2026 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 | #include <features.h> |
| 21 | |
| 22 | #ifdef __ASSEMBLER__ |
| 23 | |
| 24 | # define ASM_SIZE_DIRECTIVE(name) .size name,.-name |
| 25 | |
| 26 | /* Define an entry point visible from C. */ |
| 27 | # define ENTRY(name) \ |
| 28 | .globl name; \ |
| 29 | .type name,@function; \ |
| 30 | .align 4; \ |
| 31 | name##:; \ |
| 32 | cfi_startproc; \ |
| 33 | CALL_MCOUNT |
| 34 | |
| 35 | # undef END |
| 36 | # define END(name) \ |
| 37 | cfi_endproc; \ |
| 38 | ASM_SIZE_DIRECTIVE(name) |
| 39 | |
| 40 | /* If compiled for profiling, call `mcount' at the start of each function. */ |
| 41 | # ifdef PROF |
| 42 | # ifdef __PIC__ |
| 43 | # define CALL_MCOUNT \ |
| 44 | subi sp, 4; \ |
| 45 | stw lr, (sp, 0); \ |
| 46 | grs t0, .Lgetpc; \ |
| 47 | .Lgetpc: \ |
| 48 | lrw gb, .Lgetpc@GOTPC; \ |
| 49 | addu gb, t0; \ |
| 50 | lrw t1, _mcount@PLT; \ |
| 51 | ldr.w t0, (gb, t1 << 0); \ |
| 52 | jmp t0; |
| 53 | # else |
| 54 | # define CALL_MCOUNT \ |
| 55 | subi sp, 4; \ |
| 56 | stw lr, (sp, 0); \ |
| 57 | jbsr _mcount; |
| 58 | # endif |
| 59 | # else |
| 60 | # define CALL_MCOUNT /* Do nothing. */ |
| 61 | # endif |
| 62 | |
| 63 | # if defined (__CK860__) |
| 64 | /* Instruction fetch will be faster when the label is 16 bytes aligned. |
| 65 | Filling with nop instruction to avoid extra jump. */ |
| 66 | # define LABLE_ALIGN \ |
| 67 | .balignw 16, 0x6c03 |
| 68 | |
| 69 | # define PRE_BNEZAD(R) |
| 70 | |
| 71 | # define BNEZAD(R, L) \ |
| 72 | bnezad R, L |
| 73 | # else |
| 74 | # define LABLE_ALIGN \ |
| 75 | .balignw 8, 0x6c03 |
| 76 | |
| 77 | # define PRE_BNEZAD(R) \ |
| 78 | subi R, 1 |
| 79 | |
| 80 | # define BNEZAD(R, L) \ |
| 81 | bnez R, L |
| 82 | # endif |
| 83 | |
| 84 | #endif |