74df372398
* exec/exec.c (exec_0): Don't disable AT_EXECFN substitution on MIPS systems. * exec/loader-aarch64.s (skip_environ): Correct typo in commentary. * exec/loader-mips64el.s: Add a disclaimer that this file is currently inoperable. * exec/loader-mipsel.s (__start): Move environment and argument vectors and produce and replace AT_EXECFN. Clear stack before proceeding to circumvent an oversight in glibc.
44 lines
1.8 KiB
Text
44 lines
1.8 KiB
Text
dnl Assembler templates for MIPS computers.
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dnl
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dnl Copyright (C) 2023-2025 Free Software Foundation, Inc.
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dnl
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dnl This file is part of GNU Emacs.
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dnl
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dnl GNU Emacs is free software: you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation, either version 3 of the License, or
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dnl (at your option) any later version.
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dnl
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dnl GNU Emacs is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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define(`SYSCALL_open', `ifelse(`@MIPS_N32@',`yes',`6002',`4005')')
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dnl define(`SYSCALL_openat', `ifelse(`@MIPS_N32@',`yes',`6251',`4288')')
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define(`SYSCALL_close', `ifelse(`@MIPS_N32@',`yes',`6003',`4006')')
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define(`SYSCALL_mmap', `ifelse(`@MIPS_N32@',`yes',`6009',`4090')')
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define(`SYSCALL_nanosleep', `ifelse(`@MIPS_N32@',`yes',`6034',`4166')')
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define(`SYSCALL_exit', `ifelse(`@MIPS_N32@',`yes',`6058',`4001')')
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define(`SYSCALL_prctl', `ifelse(`@MIPS_N32@',`yes',`6153',`4192')')
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define(`SYSCALL', `ifelse(`@MIPS_N32@',`yes',` move $a4, $1
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move $a5, $2
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move $a6, $3
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move $a7, $4',` addi $sp, -32
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sw $1, 16($sp)
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sw $2, 20($sp)
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sw $3, 24($sp)
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sw $4, 28($sp)')')
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define(`RESTORE', `ifelse(`@MIPS_N32@',`yes',` nop',` addi $sp, 32')')
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define(`FP', `ifelse(`@MIPS_N32@',`yes',`$s8',`$fp')')
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dnl For mips64. Some assemblers don't want to assemble `daddi'.
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define(`DADDI2', `ifelse(`@DADDI_BROKEN@',`yes',` li $at, $2
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dadd $1, $1, $at',` daddi $1, $2')')
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define(`DADDI3', `ifelse(`@DADDI_BROKEN@',`yes',` li $at, $3
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dadd $1, $2, $at',` daddi $1, $2, $3')')
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