minix/lib/libc/arch/arm/sys/__aeabi_read_tp.S
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

22 lines
596 B
ArmAsm

/* $NetBSD: __aeabi_read_tp.S,v 1.5 2013/08/19 22:10:51 matt Exp $ */
#undef __thumb__
#include "SYS.h"
/*
* Implementations of this function should corrupt only the result register
* (r0) and the non-parameter integer core registers allowed to be corrupted
* by the [AAPCS] (ip, lr, and CPSR).
*/
ARM_ENTRY(__aeabi_read_tp)
mrc p15, 0, r0, c13, c0, 3
#ifndef _ARM_ARCH_6
cmp r0, #0 /* was it zero? */
RETc(ne) /* return it's not zero */
mov ip, r1 /* syscall zeroes r1 */
SYSTRAP(_lwp_getprivate) /* can't fail */
mov r1, ip /* restore r1 */
#endif
RET
END(__aeabi_read_tp)