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path: root/lib/mlibc/sysdeps/linux/riscv64/cp_syscall.S
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.section .text
.global __mlibc_do_asm_cp_syscall
.global __mlibc_syscall_begin
.global __mlibc_syscall_end
.type __mlibc_do_asm_cp_syscall, "function"
__mlibc_do_asm_cp_syscall:
	sd a7, -8(sp)
	mv a7, a0
	mv a0, a1
	mv a1, a2
	mv a2, a3
	mv a3, a4
	mv a4, a5
	mv a5, a6
	ld a6, -8(sp) // a7
	lw t0, -96(tp) // Tcb::cancelBits. See asserts in tcb.hpp.
__mlibc_syscall_begin:
	// tcbCancelEnableBit && tcbCancelTriggerBit
	li t1, (1 << 0) | (1 << 2)
	and t0, t0, t1
	beq t0, t1, cancel
	ecall
__mlibc_syscall_end:
	ret

cancel:
	call __mlibc_do_cancel
	unimp
.section .note.GNU-stack,"",%progbits