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#include "uwx.h"
#include "uwx_self.h"
struct uwx_env *uenv;
struct uwx_self_info *cbinfo;
extern int uwx_get_frame_info(struct uwx_env *uenv);
extern void dump_context(uint64_t *context);
extern void prime_registers();
int main(int argc, char **argv)
{
int status;
unsigned int *wp;
uenv = uwx_init();
printf("uwx_init returned %08x\n", uenv);
cbinfo = uwx_self_init_info(uenv);
status = uwx_register_callbacks(
uenv,
(intptr_t)cbinfo,
uwx_self_copyin,
uwx_self_lookupip);
printf("uwx_register_callbacks returned %d\n", status);
uwx_self_init_context(uenv);
printf("In main():\n");
dump_context((uint64_t *)uenv);
prime_registers();
uwx_free(uenv);
return 0;
}
int func1(void)
{
uwx_self_init_context(uenv);
printf("In func1():\n");
dump_context((uint64_t *)uenv);
return func2();
}
int func2(void)
{
uwx_self_init_context(uenv);
printf("In func2():\n");
dump_context((uint64_t *)uenv);
return func3();
}
int func3(void)
{
uwx_self_init_context(uenv);
printf("In func3():\n");
dump_context((uint64_t *)uenv);
return func4();
}
int func4(void)
{
int status;
int foo[10];
uint64_t *p;
uint64_t disp;
uint64_t val;
func5(foo);
uwx_self_init_context(uenv);
uwx_init_history(uenv);
printf("In func4():\n");
dump_context((uint64_t *)uenv);
for (;;) {
status = uwx_step(uenv);
if (status != UWX_OK) {
printf("uwx_step returned %d\n", status);
break;
}
status = uwx_get_reg(uenv, UWX_REG_PFS, &val);
if (status != UWX_OK) {
printf("uwx_get_reg returned %d\n", status);
break;
}
printf("After step:\n");
dump_context((uint64_t *)uenv);
status = uwx_get_spill_loc(uenv, UWX_REG_IP, &disp);
if (status == UWX_OK) {
p = (uint64_t *)(disp & ~0x7LL);
if ((disp & 0x7) == UWX_DISP_RSTK(0))
printf("IP spilled to backing store %08x = %08x\n",
(int)p, (int)(*p));
else if ((disp & 0x7) == UWX_DISP_MSTK(0))
printf("IP spilled to mem stack %08x = %08x\n",
(int)p, (int)(*p));
else if ((disp & 0x7) == UWX_DISP_REG(0))
printf("IP found in register %08x\n", (int)disp >> 4);
else
printf("IP history not available\n");
}
}
return 0;
}
int func5(int *foo)
{
foo[0] = 0;
return 0;
}
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