Viewing file:  20020402-3.c (1.29 KB) -rw-r--r--
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/* extracted from gdb sources */
typedef unsigned long long CORE_ADDR;
struct blockvector;
struct symtab {
struct blockvector *blockvector;
};
struct sec {
void *unused;
};
struct symbol {
int len;
char *name;
};
struct block {
CORE_ADDR startaddr, endaddr;
struct symbol *function;
struct block *superblock;
unsigned char gcc_compile_flag;
int nsyms;
struct symbol syms[1];
};
struct blockvector {
int nblocks;
struct block *block[2];
};
struct blockvector *blockvector_for_pc_sect(register CORE_ADDR pc,
struct symtab *symtab)
{
register struct block *b;
register int bot, top, half;
struct blockvector *bl;
bl = symtab->blockvector;
b = bl->block[0];
bot = 0;
top = bl->nblocks;
while (top - bot > 1)
{
half = (top - bot + 1) >> 1;
b = bl->block[bot + half];
if (b->startaddr <= pc)
bot += half;
else
top = bot + half;
}
while (bot >= 0)
{
b = bl->block[bot];
if (b->endaddr > pc)
{
return bl;
}
bot--;
}
return 0;
}
int main(void)
{
struct block a = { 0, 0x10000, 0, 0, 1, 20 };
struct block b = { 0x10000, 0x20000, 0, 0, 1, 20 };
struct blockvector bv = { 2, { &a, &b } };
struct symtab s = { &bv };
struct blockvector *ret;
ret = blockvector_for_pc_sect(0x500, &s);
return 0;
}
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