Differential D11199 Diff 29822 contrib/gdb/gdb/dwarf2-frame.c

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contrib/gdb/gdb/dwarf2-frame.c

Show First 20 Lines • Show All 387 Lines • ▼ Show 20 Lines	xfree (old_rs);
break;		break;

case DW_CFA_def_cfa_register:		case DW_CFA_def_cfa_register:
insn_ptr = read_uleb128 (insn_ptr, insn_end, &fs->cfa_reg);		insn_ptr = read_uleb128 (insn_ptr, insn_end, &fs->cfa_reg);
fs->cfa_how = CFA_REG_OFFSET;		fs->cfa_how = CFA_REG_OFFSET;
break;		break;

case DW_CFA_def_cfa_offset:		case DW_CFA_def_cfa_offset:
insn_ptr = read_uleb128 (insn_ptr, insn_end, &fs->cfa_offset);		insn_ptr = read_uleb128 (insn_ptr, insn_end, (unsigned long *)&fs->cfa_offset);
/* cfa_how deliberately not set. */		/* cfa_how deliberately not set. */
break;		break;

case DW_CFA_nop:		case DW_CFA_nop:
break;		break;

case DW_CFA_def_cfa_expression:		case DW_CFA_def_cfa_expression:
insn_ptr = read_uleb128 (insn_ptr, insn_end, &fs->cfa_exp_len);		insn_ptr = read_uleb128 (insn_ptr, insn_end, &fs->cfa_exp_len);
▲ Show 20 Lines • Show All 926 Lines • ▼ Show 20 Lines	read_signed_leb128 (unit->abfd, buf, &bytes_read);
if (cie->saw_z_augmentation)		if (cie->saw_z_augmentation)
{		{
ULONGEST length;		ULONGEST length;

length = read_unsigned_leb128 (unit->abfd, buf, &bytes_read);		length = read_unsigned_leb128 (unit->abfd, buf, &bytes_read);
buf += bytes_read;		buf += bytes_read;
if (buf > end)		if (buf > end)
return NULL;		return NULL;
cie->initial_instructions = buf + length;		cie->initial_instructions = (unsigned char *)(buf + length);
augmentation++;		augmentation++;
}		}

while (*augmentation)		while (*augmentation)
{		{
/* "L" indicates a byte showing how the LSDA pointer is encoded. */		/* "L" indicates a byte showing how the LSDA pointer is encoded. */
if (*augmentation == 'L')		if (*augmentation == 'L')
{		{
/* Skip. */		/* Skip. */
buf++;		buf++;
augmentation++;		augmentation++;
}		}

/* "R" indicates a byte indicating how FDE addresses are encoded. */		/* "R" indicates a byte indicating how FDE addresses are encoded. */
else if (*augmentation == 'R')		else if (*augmentation == 'R')
{		{
cie->encoding = *buf++;		cie->encoding = *buf++;
augmentation++;		augmentation++;
}		}

/* "P" indicates a personality routine in the CIE augmentation. */		/* "P" indicates a personality routine in the CIE augmentation. */
else if (*augmentation == 'P')		else if (*augmentation == 'P')
{		{
/* Skip. */		/* Skip. */
buf += size_of_encoded_value (*buf++);		buf += size_of_encoded_value (*buf);
		buf++;
augmentation++;		augmentation++;
}		}

/* Otherwise we have an unknown augmentation.		/* Otherwise we have an unknown augmentation.
Bail out unless we saw a 'z' prefix. */		Bail out unless we saw a 'z' prefix. */
else		else
{		{
if (cie->initial_instructions == NULL)		if (cie->initial_instructions == NULL)
return end;		return end;

/* Skip unknown augmentations. */		/* Skip unknown augmentations. */
buf = cie->initial_instructions;		buf = (char *)(cie->initial_instructions);
break;		break;
}		}
}		}

cie->initial_instructions = buf;		cie->initial_instructions = (unsigned char *)buf;
cie->end = end;		cie->end =(unsigned char *)end;

add_cie (unit, cie);		add_cie (unit, cie);
}		}
else		else
{		{
/* This is a FDE. */		/* This is a FDE. */
struct dwarf2_fde *fde;		struct dwarf2_fde *fde;

▲ Show 20 Lines • Show All 41 Lines • ▼ Show 20 Lines	can skip the whole thing. */
ULONGEST length;		ULONGEST length;

length = read_unsigned_leb128 (unit->abfd, buf, &bytes_read);		length = read_unsigned_leb128 (unit->abfd, buf, &bytes_read);
buf += bytes_read + length;		buf += bytes_read + length;
if (buf > end)		if (buf > end)
return NULL;		return NULL;
}		}

fde->instructions = buf;		fde->instructions = (unsigned char *)buf;
fde->end = end;		fde->end = (unsigned char *)end;

add_fde (unit, fde);		add_fde (unit, fde);
}		}

return end;		return end;
}		}

/* Read a CIE or FDE in BUF and decode it. */		/* Read a CIE or FDE in BUF and decode it. */
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