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Diffstat (limited to 'newlib/libc/machine/spu/spu-mcount.S')
| -rw-r--r-- | newlib/libc/machine/spu/spu-mcount.S | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/newlib/libc/machine/spu/spu-mcount.S b/newlib/libc/machine/spu/spu-mcount.S deleted file mode 100644 index 624dc7645..000000000 --- a/newlib/libc/machine/spu/spu-mcount.S +++ /dev/null @@ -1,93 +0,0 @@ -/* -(C) Copyright IBM Corp. 2008 - -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 IBM 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 OWNER 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. - -Author: Ken Werner <ken.werner@de.ibm.com> -*/ - -/* _mcount extracts the address of the function just entered and the address - of the caller of that function and then calls __mcount_internal. The - prologue calls mcount without saving any registers. The return address is - stored in $75. The _mcount function has to: - - create a new stack frame - - save registers $2 to $75 on the stack - - copy the two addresses ($0 and $75) into the argument registers $3 and $4 - - call __mcount_internal - - restore registers - - return to $75 */ - -/* The following two convenience macros assist in the coding of the - saving and restoring the register. - - saveregs first, last Saves registers from first to the last. - restoreregs first, last Restores registers from last down to first. - - Note: first must be less than or equal to last. */ -.macro saveregs first, last - stqd $\first, \first*16($SP) -.if \last-\first - saveregs "(\first+1)",\last -.endif -.endm - -.macro restoreregs first, last - lqd $\last, \last*16($SP) -.if \last-\first - restoreregs \first,"(\last-1)" -.endif -.endm - -/* _mcount needs to be resident since the overlay manager uses the scratch - registers too. */ -.text - .align 3 /* 8 byte alignment. */ - .global _mcount - .type _mcount, @function - -_mcount: - stqd $lr, 16($sp) /* Save link register in the callers stack frame. */ - stqd $lr, -1216($sp) /* Store back pointer. */ - il $lr, -1216 /* Push a new stack frame. */ - a $sp, $sp, $lr /* Frame size: 16 * (74 + 2) = 1216. */ - - /* Save registers $2 to $75 on the stack. */ - saveregs 2, 75 - - /* Bring the __mcount_internal arguments in place. */ - lqd $3, 1232($sp) /* frompc (the link register). */ - ori $4, $75, 0 /* selfpc (the gcc prologue puts "brsl $75, _mcount" in - front of every function). */ - brsl $lr, __mcount_internal - - /* Restore register $2 to $75 from the stack. */ - restoreregs 2, 75 - - il $lr, 1216 - a $sp, $sp, $lr /* Pop the stack frame. */ - lqd $lr, 16($sp) /* Restore link register. */ - bi $75 /* Branch to the called function. */ |