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- /* Copyright (C) 2005 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, see <http://www.gnu.org/licenses/>. */
- #include <tcb-offsets.h>
- #include <asm/unistd.h>
- #ifdef __PIC__
- #define __VFORK_METAG_LOAD_TP ___metag_load_tp@PLT
- #else
- #define __VFORK_METAG_LOAD_TP ___metag_load_tp
- #endif
- /* Save the PID value. */
- #define SAVE_PID \
- SETL [A0StP++], D0FrT, D1RtP; \
- CALLR D1RtP, __VFORK_METAG_LOAD_TP; \
- SUB D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \
- GETD D0FrT, [D0Re0 + #PID]; \
- NEGS D0FrT, D0FrT; \
- BNZ 1f; \
- MOVT D0FrT, #0x8000; \
- 1: SETD [D0Re0 + #PID], D0FrT; \
- GETL D0FrT, D1RtP, [--A0StP];
- #define RESTORE_PID \
- CMP D0Re0, #0; \
- BEQ 1f; \
- MSETL [A0StP++], D0Re0, D0FrT; \
- CALLR D1RtP, __VFORK_METAG_LOAD_TP; \
- SUB D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \
- GETD D0FrT, [D0Re0 + #PID]; \
- NEG D0FrT, D0FrT; \
- MOVT D1Re0, #0x8000; \
- CMP D0FrT, D1Re0; \
- XOREQ D0FrT, D0FrT, D0FrT; \
- SETD [D0Re0 + #PID], D0FrT; \
- GETL D0FrT, D1RtP, [--A0StP]; \
- GETL D0Re0, D1Re0, [--A0StP]; \
- 1:
- #include <../../../../../../../libc/sysdeps/linux/metag/vfork.S>
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