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Diffstat (limited to 'libgloss/arc/gcrt0.S')
| -rw-r--r-- | libgloss/arc/gcrt0.S | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/libgloss/arc/gcrt0.S b/libgloss/arc/gcrt0.S new file mode 100644 index 000000000..0ce6b63cd --- /dev/null +++ b/libgloss/arc/gcrt0.S @@ -0,0 +1,79 @@ +/* + Copyright (c) 2016, Synopsys, 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: + + 1) Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + + 2) 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. + + 3) Neither the name of the Synopsys, Inc., 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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. +*/ +#define PROFILE_SUPPORT 1 + +#include "crt0.S" + + .global __mcount + .type __mcount, @function + .align 4 +__mcount: + ;; When a function is compiled for profiling, gcc will insert + ;; a call to __mcount without checking for resources. Hence, + ;; we need save all of the argument registers and temp registers, + ;; extract the address of <func_name>, and call the _mcount_internal + ;; to do the real work. Finally, restore all the argument registers + ;; before returning. + push_s blink + push_s r0 + push_s r1 + push_s r2 + push_s r3 +#ifndef __ARC_RF16__ + push r4 + push r5 + push r6 + push r7 + push r8 + push r9 +#endif + push r10 + push r11 + push r12 + mov r0,blink + jl @_mcount_internal + pop r12 + pop r11 + pop r10 +#ifndef __ARC_RF16__ + pop r9 + pop r8 + pop r7 + pop r6 + pop r5 + pop r4 +#endif + pop_s r3 + pop_s r2 + pop_s r1 + pop_s r0 + pop_s blink + j_s [blink] + .size __mcount, . - __mcount |