diff options
Diffstat (limited to 'libc/sysdeps/linux/c6x/brk.c')
| -rw-r--r-- | libc/sysdeps/linux/c6x/brk.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/c6x/brk.c b/libc/sysdeps/linux/c6x/brk.c new file mode 100644 index 000000000..7eb486308 --- /dev/null +++ b/libc/sysdeps/linux/c6x/brk.c @@ -0,0 +1,54 @@ +/* + * 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 + * + */ + +#include <unistd.h> +#include <sys/syscall.h> +#include <errno.h> + +libc_hidden_proto(brk) + +/* This must be initialized data because commons can't have aliases. */ +void * __curbrk attribute_hidden = 0; + +int brk (void *addr) +{ + void *newbrk; + + __asm__ __volatile__ ( \ + "mv .d1 %2, A4\n\t" \ + "mvk .s2 %1, B0\n\t" \ + "swe\n\t" \ + "nop\n\t" \ + "mv .d2 B0, %0" \ + : "=b" (newbrk) \ + : "i" (__NR_brk), \ + "a" (addr) \ + : "memory", "cc", "B0", "A4"); \ + + __curbrk = newbrk; + + if (newbrk < addr) { + __set_errno (ENOMEM); + return -1; + } + return 0; +} +libc_hidden_def(brk) |