mirror of
https://github.com/nArnoSNES/tcc-65816.git
synced 2024-06-02 19:42:59 +00:00
82 lines
1.3 KiB
C
82 lines
1.3 KiB
C
/* extracted from gdb sources */
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typedef unsigned long long CORE_ADDR;
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struct blockvector;
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struct symtab {
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struct blockvector *blockvector;
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};
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struct sec {
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void *unused;
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};
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struct symbol {
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int len;
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char *name;
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};
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struct block {
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CORE_ADDR startaddr, endaddr;
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struct symbol *function;
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struct block *superblock;
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unsigned char gcc_compile_flag;
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int nsyms;
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struct symbol syms[1];
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};
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struct blockvector {
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int nblocks;
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struct block *block[2];
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};
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struct blockvector *blockvector_for_pc_sect(register CORE_ADDR pc,
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struct symtab *symtab)
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{
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register struct block *b;
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register int bot, top, half;
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struct blockvector *bl;
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bl = symtab->blockvector;
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b = bl->block[0];
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bot = 0;
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top = bl->nblocks;
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while (top - bot > 1)
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{
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half = (top - bot + 1) >> 1;
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b = bl->block[bot + half];
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if (b->startaddr <= pc)
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bot += half;
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else
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top = bot + half;
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}
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while (bot >= 0)
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{
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b = bl->block[bot];
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if (b->endaddr > pc)
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{
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return bl;
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}
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bot--;
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}
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return 0;
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}
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int main(void)
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{
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struct block a = { 0, 0x10000, 0, 0, 1, 20 };
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struct block b = { 0x10000, 0x20000, 0, 0, 1, 20 };
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struct blockvector bv = { 2, { &a, &b } };
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struct symtab s = { &bv };
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struct blockvector *ret;
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ret = blockvector_for_pc_sect(0x500, &s);
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return 0;
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}
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