jehanne/sys/src/lib/c/amd64/tas.s

/*
 * The kernel and the libc use the same constant for TAS
 */
.text
.globl _tas
_tas:
	movl    $0xdeaddead, %eax
	xchgl   %eax, 0(%rdi)            /* lock->key */
	ret
libc: initial import from Harvey Note that libc is what distinguish "native" software from "non-native" in Jehanne: further C libraries can be ported to Jehanne, but this libc will remain the main building block of the system. Also note that a few files have not been ported from Harvey: - 9sys/pushtls.c - port/rijndael.c - port/rijndael.tbl - port/sha2.c Pushtls.c depends on libmp and libsec so libc is not the appropriate place for it. The other three will be moved to libsec. 2015-12-22 12:55:44 +01:00			`/*`
			`* The kernel and the libc use the same constant for TAS`
			`*/`
			`.text`
			`.globl _tas`
			`_tas:`
			`movl $0xdeaddead, %eax`
			`xchgl %eax, 0(%rdi) /* lock->key */`
			`ret`