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Diffstat (limited to 'libgloss/tic6x/crt0.S')
| -rw-r--r-- | libgloss/tic6x/crt0.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/libgloss/tic6x/crt0.S b/libgloss/tic6x/crt0.S new file mode 100644 index 000000000..52af35143 --- /dev/null +++ b/libgloss/tic6x/crt0.S @@ -0,0 +1,63 @@ +/* crt0.S for the TI C6X series of processors + + Copyright (c) 2010 CodeSourcery, Inc. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of CodeSourcery nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY CODESOURCERY, INC. ``AS IS'' AND ANY + EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CODESOURCERY BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT + OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + DAMAGE. */ + + .text + .align 2 + + .global _start +_start: + /* Start by setting up a stack */ + mvkl .s2 _STACK_START - 4, B15 + mvkh .s2 _STACK_START - 4, B15 + and .s2 -8, B15, B15 + + mvkl .s2 __c6xabi_DSBT_BASE, B14 + mvkh .s2 __c6xabi_DSBT_BASE, B14 + +#ifdef __DSBT__ + stw .d2t2 B14, *B14 +#endif + /* Zero the memory in the .bss section. */ + + /* Set up GOT pointer. */ + + mvkl .s2 1f, B3 + mvkh .s2 1f, B3 + call .s2 _init + nop 5 +1: + + mvkl .s2 1f, B3 + mvkh .s2 1f, B3 + call .s2 main + nop 5 +1: + + b .s2 exit + nop 5 |