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1927f718fc
Use beqzc instead of bnel. Checked with a mipsisa64r6el-n64-linux-gnu build and some nptl cancellation tests on qemu.
112 lines
2.5 KiB
ArmAsm
112 lines
2.5 KiB
ArmAsm
/* Cancellable syscall wrapper. Linux/mips64 version.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <sys/asm.h>
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#include <descr-const.h>
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/* long int __syscall_cancel_arch (int *cancelhandling,
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__syscall_arg_t nr,
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__syscall_arg_t arg1,
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__syscall_arg_t arg2,
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__syscall_arg_t arg3,
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__syscall_arg_t arg4,
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__syscall_arg_t arg5,
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__syscall_arg_t arg6,
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__syscall_arg_t arg7) */
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#define FRAME_SIZE 32
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.text
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NESTED (__syscall_cancel_arch, FRAME_SIZE, ra)
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.mask 0x90010000, -SZREG
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.fmask 0x00000000, 0
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LONG_ADDIU sp, sp, -FRAME_SIZE
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cfi_def_cfa_offset (FRAME_SIZE)
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sd gp, 16(sp)
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cfi_offset (gp, -16)
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lui gp, %hi(%neg(%gp_rel(__syscall_cancel_arch)))
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LONG_ADDU gp, gp, t9
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sd ra, 24(sp)
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sd s0, 8(sp)
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cfi_offset (ra, -8)
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cfi_offset (s0, -24)
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LONG_ADDIU gp, gp, %lo(%neg(%gp_rel(__syscall_cancel_arch)))
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.global __syscall_cancel_arch_start
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__syscall_cancel_arch_start:
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lw v0, 0(a0)
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andi v0, v0, TCB_CANCELED_BITMASK
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.set noreorder
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.set nomacro
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bne v0, zero, 2f
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move s0, a1
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.set macro
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.set reorder
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move a0, a2
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move a1, a3
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move a2, a4
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move a3, a5
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move a4, a6
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move a5, a7
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.set noreorder
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move v0, s0
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syscall
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.set reorder
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.global __syscall_cancel_arch_end
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__syscall_cancel_arch_end:
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.set noreorder
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.set nomacro
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#if __mips_isa_rev >= 6
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beqzc $7, 1f
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#else
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bnel a3, zero, 1f
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#endif
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SUBU v0, zero, v0
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.set macro
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.set reorder
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1:
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ld ra, 24(sp)
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ld gp, 16(sp)
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ld s0, 8(sp)
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.set noreorder
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.set nomacro
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jr ra
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LONG_ADDIU sp, sp, FRAME_SIZE
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.set macro
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.set reorder
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cfi_remember_state
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cfi_def_cfa_offset (0)
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cfi_restore (s0)
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cfi_restore (gp)
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cfi_restore (ra)
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.align 3
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2:
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cfi_restore_state
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LONG_L t9, %got_disp(__syscall_do_cancel)(gp)
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.reloc 3f, R_MIPS_JALR, __syscall_do_cancel
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3: jalr t9
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END (__syscall_cancel_arch)
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