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hp.com!davidm 2003-02-26 08:33:57 +00:00
parent b97fa14ca5
commit 818d0241f2
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tests/ia64-test-dyn1.c
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@ -1,148 +0,0 @@
#include <libunwind.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/mman.h>
#ifdef __ia64__
# define GET_ENTRY(fdesc) (((uintptr_t *) (fdesc))[0])
# define GET_GP(fdesc) (((uintptr_t *) (fdesc))[0])
# define EXTRA 16
#else
# define GET_ENTRY(fdesc) ((uintptr_t ) (fdesc))
# define GET_GP(fdesc) (0)
# define EXTRA 0
#endif
static void
flush_cache (void *addr, size_t len)
{
#ifdef __ia64__
void *end = (char *) addr + len;
while (addr < end)
{
asm volatile ("fc %0" :: "r"(addr));
addr = (char *) addr + 32;
}
asm volatile (";;sync.i;;srlz.i;;");
#endif
}
int
make_executable (void *addr, size_t len)
{
if (mprotect ((void *) (((long) addr) & -getpagesize ()), len,
PROT_READ | PROT_WRITE | PROT_EXEC) < 0)
{
perror ("mprotect");
return -1;
}
flush_cache (addr, len);
return 0;
}
void *
create_func (unw_dyn_info_t *di, const char *name, long (*func) (),
void *end, unw_dyn_region_info_t *region)
{
void *mem, *addr, *fptr;
unw_word_t gp = 0;
size_t len;
len = (uintptr_t) end - GET_ENTRY (func) + EXTRA;
mem = malloc (len);
#ifdef __ia64__
addr = (void *) GET_ENTRY (func);
/* build function descriptor: */
((long *) mem)[0] = (long) mem + 16; /* entry point */
((long *) mem)[1] = GET_GP (func); /* global-pointer */
fptr = mem;
mem = (void *) ((long) mem + 16);
#else
fptr = mem;
#endif
memcpy (mem, addr, len);
if (make_executable (mem, len) < 0)
return NULL;
if (di)
{
memset (di, 0, sizeof (*di));
di->start_ip = (unw_word_t) mem;
di->end_ip = (unw_word_t) mem + len;
di->gp = gp;
di->format = UNW_INFO_FORMAT_DYNAMIC;
di->u.pi.name_ptr = (unw_word_t) name;
di->u.pi.regions = region;
}
return fptr;
}
int
main (int argc, char **argv)
{
extern long func_add1 (long);
extern char func_add1_end[];
extern long func_add3 (long, long (*[])());
extern char func_add3_end[];
extern char _U_dyn_info_list[];
unw_dyn_region_info_t *r_pro, *r_epi;
unw_dyn_info_t di0, di1;
long (*add1) (long);
long (*add3_0) (long);
long (*add3_1) (long, long (*[])());
void *flist[2];
long ret;
add1 = create_func (NULL, "func_add1", func_add1, func_add1_end, NULL);
/* Describe the epilogue of func_add3: */
r_epi = alloca (_U_dyn_region_info_size (2));
r_epi->next = NULL;
r_epi->insn_count = -4;
r_epi->op_count = 2;
_U_dyn_op_pop_frames (&r_epi->op[0],
/* qp=*/ 1, /* when=*/ 0, /* num_frames=*/ 1);
_U_dyn_op_stop (&r_epi->op[1]);
/* Describe the prologue of func_add3: */
r_pro = alloca (_U_dyn_region_info_size (2));
r_pro->next = r_epi;
r_pro->insn_count = 3;
r_pro->op_count = 3;
_U_dyn_op_save_reg (&r_pro->op[0], /* qp=*/ 1, /* when=*/ 0,
/* reg=*/ UNW_IA64_AR_PFS, /* dst=*/ UNW_IA64_GR + 35);
_U_dyn_op_save_reg (&r_pro->op[1], /* qp=*/ 1, /* when=*/ 2,
/* reg=*/ UNW_IA64_BR + 0, /* dst=*/ UNW_IA64_GR + 34);
_U_dyn_op_stop (&r_pro->op[2]);
/* Create two functions which can share the region-list: */
add3_0 = create_func (&di0, "func_add3/0", func_add3, func_add3_end, r_pro);
add3_1 = create_func (&di1, "func_add3/1", func_add3, func_add3_end, r_pro);
_U_dyn_register (&di0);
_U_dyn_register (&di1);
flist[0] = add3_0;
flist[1] = add1;
syscall (-1); /* do something ptmon can latch onto */
ret = (*add3_1) (13, flist);
_U_dyn_cancel (&di0);
_U_dyn_cancel (&di1);
if (ret != 18)
{
fprintf (stderr, "FAILURE: (*add3_1)(13) returned %ld\n", ret);
exit (-1);
}
return 0;
}