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/*
B A C K E N D . C
version
offset of the string constant-area (INT32)
offset of the variable area (INT32)
offset of the strings area (INT32)
offset of the first instruction (INT32)
code (first byte is first instruction)
ascii-z string constant area
variables
filenames
*/
#include "iccomp.h"
static INT8
opexit = op_exit,
opcall = op_call;
void backend()
{
register unsigned
index;
BIN_HEADER_
hdr;
strcpy(string, "main");
if ((index = looksym(&funtab)) == funtab.n_defined)
{
semantic("function 'main()' not defined");
exit(1);
}
hdr.offset[3] = ftell(s_bin); /* offset of first instruction */
hidden_functions(); /* patchup generated hidden */
/* function calls */
fseek(s_bin, 0, SEEK_END); /* upwind to EOF again */
outbin(&opcall, sizeof(INT8)); /* call main() at its offset */
outbin(&funtab.symbol[index].var.vu.i->count, sizeof(INT16));
outbin(&opexit, sizeof(INT8)); /* generate op_ret at the end */
strcpy(hdr.version, version); /* set the version */
hdr.offset[0] = ftell(s_bin); /* here the strings start */
/* generate the strings */
for (index = 0; index < n_strings; index++)
fprintf(s_bin, "%s%c", stringtab[index].string, 0);
hdr.offset[1] = ftell(s_bin); /* here the vars start */
for (index = 0; index < global.n_defined; index++)
{
global.symbol[index].var.type &= ~e_var; /* remove 'var' indicator */
fwrite(&global.symbol[index].var, 1, sizeof(VAR_), s_bin);
}
hdr.offset[2] = ftell(s_bin); /* here the filenames start */
fputs(filenames, s_bin);
rewind(s_bin);
/* write the offset info */
fwrite(&hdr, sizeof(BIN_HEADER_), 1, s_bin);
}
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