diff options
Diffstat (limited to 'libc/sysdeps/linux/c6x/_vfork.S')
| -rw-r--r-- | libc/sysdeps/linux/c6x/_vfork.S | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/c6x/_vfork.S b/libc/sysdeps/linux/c6x/_vfork.S new file mode 100644 index 000000000..20cb6a52f --- /dev/null +++ b/libc/sysdeps/linux/c6x/_vfork.S @@ -0,0 +1,55 @@ + ; + ; Port of uClibc for TMS320C6000 DSP architecture + ; Copyright (C) 2004 Texas Instruments Incorporated + ; Author of TMS320C6000 port: Aurelien Jacquiot + ; + ; This program is free software; you can redistribute it and/or modify it + ; under the terms of the GNU Library General Public License as published by + ; the Free Software Foundation; either version 2 of the License, or (at your + ; option) any later version. + ; + ; This program 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 Library General Public License + ; for more details. + ; + ; You should have received a copy of the GNU Library General Public License + ; along with this program; if not, write to the Free Software Foundation, + ; Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + ; + +; .import __errno_location + .global __vfork + +__vfork: + MVK .S2 190,B0 ; __NR_vfork +#ifndef _TMS320C6400_PLUS + MVC .S2 CSR,B2 + CLR .S2 B2,0,0,B1 + MVC .S2 B1,CSR + MVC .S2 IFR,B1 + SET .S2 B1,6,6,B1 + MVC .S2 B1,ISR + MVC .S2 B2,CSR + NOP +#else + SWE +#endif + + MVK .S2 -4096,B4 + CMPGTU .L2X B4,A4,B2 ; check error + [B2] BNOP .S2 B3,5 + + NEG .S1 A4,A4 + STW .D2T1 A4,*B15--[2] + STW .D2T2 B3,*+B15[1] + CALLP .S2 __errno_location,B3 + LDW .D2T2 *+B15[1],B3 + LDW .D2T1 *++B15[2],A5 + NOP 3 + BNOP .S2 B3,3 + STW .D1T1 A5,*A4 + MVK .L1 -1,A4 + +weak_alias(__vfork,vfork) +libc_hidden_weak(vfork) |