35f3f0a87d
Newer versions of gcc (14 and up) have more sophisticated dead-code detection, and the asm clobbers list needs to contain "memory" to inform the compiler that the asm code actually does something. Tested that adding this "memory" line does not change the generated code on ARM Thumb2, x86-64 and Xtensa targets (using gcc 13.2). Fixes issue #14115. Signed-off-by: Damien George <damien@micropython.org>
87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2017 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/mpstate.h"
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#if MICROPY_NLR_MIPS
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__attribute__((used)) unsigned int nlr_push_tail(nlr_buf_t *nlr);
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__asm(
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".globl nlr_push \n"
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"nlr_push: \n"
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".ent nlr_push \n"
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".frame $29, 0, $31 \n"
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".set noreorder \n"
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".cpload $25 \n"
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".set reorder \n"
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"sw $31, 8($4) \n" /* is the offset of regs in nlr_buf_t */
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"sw $30, 12($4) \n"
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"sw $29, 16($4) \n"
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"sw $28, 20($4) \n"
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"sw $23, 24($4) \n"
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"sw $22, 28($4) \n"
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"sw $21, 32($4) \n"
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"sw $20, 36($4) \n"
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"sw $19, 40($4) \n"
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"sw $18, 44($4) \n"
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"sw $17, 48($4) \n"
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"sw $16, 52($4) \n"
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#ifdef __pic__
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"la $25, nlr_push_tail \n"
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#endif
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"j nlr_push_tail \n"
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".end nlr_push \n"
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);
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NORETURN void nlr_jump(void *val) {
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MP_NLR_JUMP_HEAD(val, top)
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__asm(
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"move $4, %0 \n"
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"lw $31, 8($4) \n"
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"lw $30, 12($4) \n"
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"lw $29, 16($4) \n"
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"lw $28, 20($4) \n"
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"lw $23, 24($4) \n"
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"lw $22, 28($4) \n"
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"lw $21, 32($4) \n"
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"lw $20, 36($4) \n"
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"lw $19, 40($4) \n"
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"lw $18, 44($4) \n"
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"lw $17, 48($4) \n"
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"lw $16, 52($4) \n"
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"lui $2,1 \n" // set return value 1
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"j $31 \n"
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"nop \n"
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:
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: "r" (top)
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: "memory"
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);
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MP_UNREACHABLE
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}
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#endif // MICROPY_NLR_MIPS
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