84 lines
2.1 KiB
ArmAsm
84 lines
2.1 KiB
ArmAsm
############################################################################
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# libs/libc/machine/risc-v/common/arch_setjmp.S
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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#if __riscv_xlen == 64
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# define SZREG 8
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# define REG_S sd
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# define REG_L ld
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#elif __riscv_xlen == 32
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# define SZREG 4
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# define REG_S sw
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# define REG_L lw
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#else
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# error __riscv_xlen must equal 32 or 64
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#endif
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.section .text
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.globl setjmp
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.type setjmp, @function
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setjmp:
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REG_S ra, 0*SZREG(a0)
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REG_S s0, 1*SZREG(a0)
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REG_S s1, 2*SZREG(a0)
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REG_S s2, 3*SZREG(a0)
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REG_S s3, 4*SZREG(a0)
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REG_S s4, 5*SZREG(a0)
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REG_S s5, 6*SZREG(a0)
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REG_S s6, 7*SZREG(a0)
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REG_S s7, 8*SZREG(a0)
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REG_S s8, 9*SZREG(a0)
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REG_S s9, 10*SZREG(a0)
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REG_S s10,11*SZREG(a0)
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REG_S s11,12*SZREG(a0)
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REG_S sp, 13*SZREG(a0)
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li a0, 0
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ret
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.size setjmp, .-setjmp
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/* volatile void longjmp (jmp_buf, int); */
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.section .text
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.globl longjmp
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.type longjmp, @function
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longjmp:
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REG_L ra, 0*SZREG(a0)
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REG_L s0, 1*SZREG(a0)
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REG_L s1, 2*SZREG(a0)
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REG_L s2, 3*SZREG(a0)
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REG_L s3, 4*SZREG(a0)
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REG_L s4, 5*SZREG(a0)
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REG_L s5, 6*SZREG(a0)
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REG_L s6, 7*SZREG(a0)
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REG_L s7, 8*SZREG(a0)
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REG_L s8, 9*SZREG(a0)
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REG_L s9, 10*SZREG(a0)
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REG_L s10,11*SZREG(a0)
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REG_L s11,12*SZREG(a0)
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REG_L sp, 13*SZREG(a0)
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seqz a0, a1
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add a0, a0, a1 # a0 = (a1 == 0) ? 1 : a1
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ret
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.size longjmp, .-longjmp
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