/* producer function to add a spill_sprel descriptor */
__unw_error_t
unwind_info_add_spill_sprel_info (__unw_info_t *info,
__uint64_t when,
__UNW_REG_TYPE ureg,
__uint64_t offset)
{
__unw_error_t ret = __UNW_OK;
__uint64_t rsize, esize1, esize2;
__uint8_t a, b, reg;
char encoded[2+(2*__UNW_ENCODING_SIZE)];
/* check valid info argument */
if (NULL == info) {
return __UNW_NULL_ERROR;
} else if (_unwind_info + _unwind_info_size != info) {
return __UNW_INV_ARG_ERROR;
}
/* check valid time argument */
if (_current_region_total_size > 0 && when >= _current_region_total_size) {
return __UNW_INV_SIZE_ERROR;
}
/* construct and add the spill_offset descriptor */
/* format X1 */
/* 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 */
/* 1 1 1 1 1 0 0 1 r a b reg t(LEB128) spoff(ULEB128) */
/* r = 1 */
encoded[0] = 0xf9;
reg_enum_to_abreg(ureg, &a, &b, ®);
encoded[1] = 0x80;
encoded[1] |= (a << 6);
encoded[1] |= (b << 5);
encoded[1] |= reg;
if ((esize1 = __leb128_encode((char *)&encoded[2],
(__uint64_t)__UNW_ENCODING_SIZE,
when)) == 0)
{
return __UNW_INTERNAL_ERROR;
}
if ((esize2 = __leb128_encode((char *)&encoded[2+esize1],
(__uint64_t)__UNW_ENCODING_SIZE,
offset)) == 0)
{
return __UNW_INTERNAL_ERROR;
}
rsize = 2 + esize1 + esize2;
/* add descriptor */
ret = unwind_info_add_desc(rsize, (char*) &encoded);
return ret;
}
/* producer function to add a prologue unat_sprel descriptor */
__unw_error_t unwind_info_add_prologue_unat_sprel_info(__unw_info_t *info,
__uint64_t offset) {
__unw_error_t ret = __UNW_OK;
__unw_format_p8_t *desc;
__uint64_t rsize, esize;
char encoded[2+__UNW_ENCODING_SIZE];
/* check valid info argument */
if (NULL == info) {
return __UNW_NULL_ERROR;
} else if (_unwind_info + _unwind_info_size != info) {
return __UNW_INV_ARG_ERROR;
}
/* construct and add the unat_sprel descriptor */
/* format P8 */
/* 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 */
/* 1 1 1 1 0 0 0 0 0 0 0 0 0 1 0 1 spoff(LEB128) */
encoded[0] = 0xf0;
encoded[1] = 0x05;
if ((esize = __leb128_encode((char *)&encoded[2],
(__uint64_t)__UNW_ENCODING_SIZE,
offset)) == 0) {
return __UNW_INTERNAL_ERROR;
}
desc = (__unw_format_p8_t *)&encoded;
rsize = 2 + esize;
/* add descriptor */
ret = unwind_info_add_desc(rsize, (char *)desc);
return ret;
}
/* producer function to add a spill_reg descriptor */
__unw_error_t
unwind_info_add_spill_reg_to_gr_info (__unw_info_t *info,
__uint64_t when,
__UNW_REG_TYPE ureg,
__uint32_t treg)
{
__unw_error_t ret = __UNW_OK;
__uint64_t rsize, esize;
__uint8_t a, b, reg;
char encoded[3+1*__UNW_ENCODING_SIZE];
/* check valid info argument */
if (NULL == info) {
return __UNW_NULL_ERROR;
} else if (_unwind_info + _unwind_info_size != info) {
return __UNW_INV_ARG_ERROR;
}
/* check valid time argument */
if (_current_region_total_size > 0 && when >= _current_region_total_size) {
return __UNW_INV_SIZE_ERROR;
}
/* construct and add the spill_reg descriptor */
/* format X2 */
/* 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 */
/* 1 1 1 1 1 0 1 0 x a b reg y treg t(LEB128) */
/* x = 0, y = 0 */
encoded[0] = 0xfa;
reg_enum_to_abreg(ureg, &a, &b, ®);
encoded[1] = 0;
encoded[1] |= (a << 6);
encoded[1] |= (b << 5);
encoded[1] |= reg;
encoded[2] = 0x0;
encoded[2] |= treg;
if ((esize = __leb128_encode((char *)&encoded[3],
(__uint64_t)__UNW_ENCODING_SIZE,
when)) == 0)
{
return __UNW_INTERNAL_ERROR;
}
rsize = 3 + esize;
/* add descriptor */
ret = unwind_info_add_desc(rsize, (char*) &encoded);
return ret;
}
/* producer function to add a prologue bsp_when descriptor */
__unw_error_t unwind_info_add_prologue_bsp_when_info(__unw_info_t *info,
__uint64_t when) {
__unw_error_t ret = __UNW_OK;
__unw_format_p8_t *desc;
__uint64_t rsize, esize;
char encoded[2+__UNW_ENCODING_SIZE];
/* check valid info argument */
if (NULL == info) {
return __UNW_NULL_ERROR;
} else if (_unwind_info + _unwind_info_size != info) {
return __UNW_INV_ARG_ERROR;
}
/* check valid time argument */
if (when >= _current_region_total_size) {
return __UNW_INV_SIZE_ERROR;
}
/* construct and add the bsp_when descriptor */
/* format P8 */
/* 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 */
/* 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 t(LEB128) */
encoded[0] = 0xf0;
encoded[1] = 0x07;
if ((esize = __leb128_encode((char *)&encoded[2],
(__uint64_t)__UNW_ENCODING_SIZE,
when)) == 0) {
return __UNW_INTERNAL_ERROR;
}
desc = (__unw_format_p8_t *)&encoded;
rsize = 2 + esize;
/* add descriptor */
ret = unwind_info_add_desc(rsize, (char *)desc);
return ret;
}
