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clone_thread: Add arch_clone_thread()

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Fujitsu: POSTK_DEBUG_ARCH_DEP_23
Refs: #969
Change-Id: Ic15765b8c9e956c95fc50b333b01464d87450d3c
This commit is contained in:
Masamichi Takagi
2018-10-02 13:42:52 +09:00
committed by Dominique Martinet
parent 9db8d115d9
commit fb98664f49
4 changed files with 0 additions and 12 deletions
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6
arch/arm64/kernel/cpu.c
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@ -1157,7 +1157,6 @@ err:
static int check_and_allocate_fp_regs(struct thread *thread);
void save_fp_regs(struct thread *thread);
#ifdef POSTK_DEBUG_ARCH_DEP_23 /* add arch dep. clone_thread() function */
void arch_clone_thread(struct thread *othread, unsigned long pc,
unsigned long sp, struct thread *nthread)
{
@ -1167,10 +1166,6 @@ void arch_clone_thread(struct thread *othread, unsigned long pc,
asm("mrs %0, tpidr_el0" : "=r" (tls));
othread->tlsblock_base = nthread->tlsblock_base = tls;
if ((othread->fp_regs != NULL) && (check_and_allocate_fp_regs(nthread) == 0)) {
memcpy(nthread->fp_regs, othread->fp_regs, sizeof(fp_regs_struct));
}
/* if SVE enable, takeover lower 128 bit register */
if (likely(elf_hwcap & HWCAP_SVE)) {
fp_regs_struct fp_regs;
@ -1180,7 +1175,6 @@ void arch_clone_thread(struct thread *othread, unsigned long pc,
thread_fpsimd_to_sve(nthread, &fp_regs);
}
}
#endif /* POSTK_DEBUG_ARCH_DEP_23 */
/*@
@ requires \valid(handler);