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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
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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; }