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//===-- stacker_rt.c - Runtime Support For Stacker Compiler -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and donated to the LLVM research
// group and is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a stack dumping function that can be used for debugging.
// It is called whenever the DUMP built-in word is used in the Stacker source.
// It has no effect on the stack (other than to print it).
//
// The real reason this is here is to test LLVM's ability to link with
// separately compiled software.
//
//===----------------------------------------------------------------------===//
#include "ctype.h"
#include "stdio.h"
#include "stdlib.h"
extern long _index_;
extern int _stack_[1024];
extern void _MAIN_();
void
_stacker_dump_stack_()
{
int i;
printf("Stack Dump:\n");
for (i = _index_; i > 0; i-- )
{
printf("#%03d: %d\n", i, _stack_[i] );
}
}
int
main ( int argc, char** argv )
{
// Avoid modifying argc
int a = argc;
// Make sure we're starting with the right index
_index_ = 0;
// Copy the arguments to the stack in reverse order
// so that they get popped in the order presented
while ( a > 0 )
{
if ( isdigit( argv[--a][0] ) )
{
_stack_[_index_++] = atoi( argv[a] );
}
else
{
_stack_[_index_++] = (int) argv[a];
}
}
// Put the argument count on the stack
_stack_[_index_] = argc;
// Invoke the user's main program
_MAIN_();
// Return last item on the stack
if ( _index_ >= 0 )
return _stack_[_index_];
return -1;
}
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