/* vms.c -- BFD back-end for EVAX (openVMS/Alpha) files.
- Copyright (C) 1996-2019 Free Software Foundation, Inc.
+ Copyright (C) 1996-2020 Free Software Foundation, Inc.
Initial version written by Klaus Kaempf (kkaempf@rmi.de)
Major rewrite by Adacore.
asection *section;
flagword bfd_flags;
- /* PR 17512: file: 3d9e9fe9.
- 12 is the offset of the eisdsize field from the start of the record (8)
- plus the size of the eisdsize field (4). */
- if (offset >= PRIV (recrd.rec_size) - 12)
+ /* PR 17512: file: 3d9e9fe9. */
+ if (offset > PRIV (recrd.rec_size)
+ || (PRIV (recrd.rec_size) - offset
+ < offsetof (struct vms_eisd, eisdsize) + 4))
return FALSE;
- eisd = (struct vms_eisd *)(PRIV (recrd.rec) + offset);
+ eisd = (struct vms_eisd *) (PRIV (recrd.rec) + offset);
rec_size = bfd_getl32 (eisd->eisdsize);
if (rec_size == 0)
break;
}
/* Make sure that there is enough data present in the record. */
- /* FIXME: Should we use sizeof (struct vms_eisd) rather than just 32 here ? */
- if (rec_size < 32)
+ if (rec_size < offsetof (struct vms_eisd, type) + 1)
return FALSE;
/* Make sure that the record is not too big either. */
- if (offset + rec_size >= PRIV (recrd.rec_size))
+ if (rec_size > PRIV (recrd.rec_size) - offset)
return FALSE;
offset += rec_size;
if (flags & EISD__M_GBL)
{
- if (rec_size < offsetof (struct vms_eisd, gblnam))
+ if (rec_size <= offsetof (struct vms_eisd, gblnam))
return FALSE;
else if (rec_size < sizeof (struct vms_eisd))
name = _bfd_vms_save_counted_string (abfd, eisd->gblnam,
else
name = _bfd_vms_save_counted_string (abfd, eisd->gblnam,
EISD__K_GBLNAMLEN);
- if (name == NULL)
+ if (name == NULL || name[0] == 0)
return FALSE;
bfd_flags |= SEC_COFF_SHARED_LIBRARY;
bfd_flags &= ~(SEC_ALLOC | SEC_LOAD);
unsigned int gsd_size;
unsigned char *vms_rec;
bfd_vma base_addr;
+ long psindx;
vms_debug2 ((2, "EGSD\n"));
/* PR 21615: Check for size overflow. */
if (PRIV (recrd.rec_size) < gsd_size)
{
- _bfd_error_handler (_("corrupt EGSD record: size (%#x) is larger than remaining space (%#x)"),
- gsd_size, PRIV (recrd.rec_size));
+ _bfd_error_handler (_("corrupt EGSD record type %d: size (%#x) "
+ "is larger than remaining space (%#x)"),
+ gsd_type, gsd_size, PRIV (recrd.rec_size));
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
if (gsd_size < 4)
{
- _bfd_error_handler (_("corrupt EGSD record: size (%#x) is too small"),
- gsd_size);
+ too_small:
+ _bfd_error_handler (_("corrupt EGSD record type %d: size (%#x) "
+ "is too small"),
+ gsd_type, gsd_size);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
case EGSD__C_PSC:
/* Program section definition. */
{
- struct vms_egps *egps = (struct vms_egps *)vms_rec;
+ struct vms_egps *egps = (struct vms_egps *) vms_rec;
flagword new_flags, vms_flags;
asection *section;
+ if (offsetof (struct vms_egps, flags) + 2 > gsd_size)
+ goto too_small;
vms_flags = bfd_getl16 (egps->flags);
if ((vms_flags & EGPS__V_REL) == 0)
{
char *name;
bfd_vma align_addr;
+ size_t left;
- name = _bfd_vms_save_counted_string (abfd, &egps->namlng,
- gsd_size - 4);
+ if (offsetof (struct vms_egps, namlng) >= gsd_size)
+ goto too_small;
+ left = gsd_size - offsetof (struct vms_egps, namlng);
+ name = _bfd_vms_save_counted_string (abfd, &egps->namlng, left);
+ if (name == NULL || name[0] == 0)
+ return FALSE;
section = bfd_make_section (abfd, name);
if (!section)
struct vms_egsy *egsy = (struct vms_egsy *) vms_rec;
flagword old_flags;
+ if (offsetof (struct vms_egsy, flags) + 2 > gsd_size)
+ goto too_small;
old_flags = bfd_getl16 (egsy->flags);
if (old_flags & EGSY__V_DEF)
nameoff = ESDF__B_NAMLNG;
nameoff = ESRF__B_NAMLNG;
if (nameoff >= gsd_size)
- {
- _bfd_error_handler (_("ECSD__C_SYM record is too small"));
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
+ goto too_small;
entry = add_symbol (abfd, vms_rec + nameoff, gsd_size - nameoff);
if (entry == NULL)
return FALSE;
if (old_flags & EGSY__V_DEF)
{
- struct vms_esdf *esdf = (struct vms_esdf *)vms_rec;
- long psindx;
+ struct vms_esdf *esdf = (struct vms_esdf *) vms_rec;
entry->value = bfd_getl64 (esdf->value);
if (PRIV (sections) == NULL)
/* PR 21813: Check for an out of range index. */
if (psindx < 0 || psindx >= (int) PRIV (section_count))
{
- _bfd_error_handler (_("corrupt EGSD record: its psindx field is too big (%#lx)"),
+ bad_psindx:
+ _bfd_error_handler (_("corrupt EGSD record: its psindx "
+ "field is too big (%#lx)"),
psindx);
bfd_set_error (bfd_error_bad_value);
return FALSE;
entry->code_value = bfd_getl64 (esdf->code_address);
psindx = bfd_getl32 (esdf->ca_psindx);
- /* PR 21813: Check for an out of range index. */
+ /* PR 21813: Check for an out of range index. */
if (psindx < 0 || psindx >= (int) PRIV (section_count))
- {
- _bfd_error_handler (_("corrupt EGSD record: its psindx field is too big (%#lx)"),
- psindx);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
+ goto bad_psindx;
entry->code_section = PRIV (sections)[psindx];
}
}
old_flags = bfd_getl16 (egst->header.flags);
if (nameoff >= gsd_size)
- {
- _bfd_error_handler (_("ECSD__C_SYMG record is too small"));
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
+ goto too_small;
entry = add_symbol (abfd, &egst->namlng, gsd_size - nameoff);
if (entry == NULL)
return FALSE;
if (old_flags & EGSY__V_REL)
{
- long psindx;
-
if (PRIV (sections) == NULL)
return FALSE;
psindx = bfd_getl32 (egst->psindx);
/* PR 21813: Check for an out of range index. */
if (psindx < 0 || psindx >= (int) PRIV (section_count))
- {
- _bfd_error_handler (_("corrupt EGSD record: its psindx field is too big (%#lx)"),
- psindx);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
+ goto bad_psindx;
entry->section = PRIV (sections)[psindx];
}
else
/* Push value and section index. */
-static void
+static bfd_boolean
_bfd_vms_push (bfd *abfd, bfd_vma val, unsigned int reloc)
{
vms_debug2 ((4, "<push %08lx (0x%08x) at %d>\n",
{
bfd_set_error (bfd_error_bad_value);
_bfd_error_handler (_("stack overflow (%d) in _bfd_vms_push"), PRIV (stackptr));
- exit (1);
+ return FALSE;
}
+ return TRUE;
}
/* Pop value and section index. */
-static void
+static bfd_boolean
_bfd_vms_pop (bfd *abfd, bfd_vma *val, unsigned int *rel)
{
if (PRIV (stackptr) == 0)
{
bfd_set_error (bfd_error_bad_value);
_bfd_error_handler (_("stack underflow in _bfd_vms_pop"));
- exit (1);
+ return FALSE;
}
PRIV (stackptr)--;
*val = PRIV (stack[PRIV (stackptr)]).value;
*rel = PRIV (stack[PRIV (stackptr)]).reloc;
vms_debug2 ((4, "<pop %08lx (0x%08x)>\n", (unsigned long)*val, *rel));
+ return TRUE;
}
/* Routines to fill sections contents during tir/etir read. */
stack 32 bit value of symbol (high bits set to 0). */
case ETIR__C_STA_GBL:
_bfd_vms_get_value (abfd, ptr, maxptr, info, &op1, &h);
- _bfd_vms_push (abfd, op1, alpha_vms_sym_to_ctxt (h));
+ if (!_bfd_vms_push (abfd, op1, alpha_vms_sym_to_ctxt (h)))
+ return FALSE;
break;
/* Stack longword
case ETIR__C_STA_LW:
if (ptr + 4 > maxptr)
goto corrupt_etir;
- _bfd_vms_push (abfd, bfd_getl32 (ptr), RELC_NONE);
+ if (!_bfd_vms_push (abfd, bfd_getl32 (ptr), RELC_NONE))
+ return FALSE;
break;
/* Stack quadword
case ETIR__C_STA_QW:
if (ptr + 8 > maxptr)
goto corrupt_etir;
- _bfd_vms_push (abfd, bfd_getl64 (ptr), RELC_NONE);
+ if (!_bfd_vms_push (abfd, bfd_getl64 (ptr), RELC_NONE))
+ return FALSE;
break;
/* Stack psect base plus quadword offset
return FALSE;
}
op1 = bfd_getl64 (ptr + 4);
- _bfd_vms_push (abfd, op1, psect | RELC_SEC_BASE);
+ if (!_bfd_vms_push (abfd, op1, psect | RELC_SEC_BASE))
+ return FALSE;
}
break;
/* Store byte: pop stack, write byte
arg: -. */
case ETIR__C_STO_B:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 != RELC_NONE)
goto bad_context;
image_write_b (abfd, (unsigned int) op1 & 0xff);
/* Store word: pop stack, write word
arg: -. */
case ETIR__C_STO_W:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 != RELC_NONE)
goto bad_context;
image_write_w (abfd, (unsigned int) op1 & 0xffff);
/* Store longword: pop stack, write longword
arg: -. */
case ETIR__C_STO_LW:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 & RELC_SEC_BASE)
{
op1 = alpha_vms_fix_sec_rel (abfd, info, rel1, op1);
/* Store quadword: pop stack, write quadword
arg: -. */
case ETIR__C_STO_QW:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 & RELC_SEC_BASE)
{
op1 = alpha_vms_fix_sec_rel (abfd, info, rel1, op1);
if (ptr + 4 > maxptr)
goto corrupt_etir;
size = bfd_getl32 (ptr);
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 != RELC_NONE)
goto bad_context;
while (op1-- > 0)
/* Store offset to psect: pop stack, add low 32 bits to base of psect
arg: none. */
case ETIR__C_STO_OFF:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (!(rel1 & RELC_SEC_BASE))
abort ();
/* Det relocation base: pop stack, set image location counter
arg: none. */
case ETIR__C_CTL_SETRB:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (!(rel1 & RELC_SEC_BASE))
abort ();
image_set_ptr (abfd, op1, rel1 & RELC_MASK, info);
/* Define location: pop index, save location counter under index
arg: none. */
case ETIR__C_CTL_DFLOC:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 != RELC_NONE)
goto bad_context;
dst_define_location (abfd, op1);
/* Set location: pop index, restore location counter from index
arg: none. */
case ETIR__C_CTL_STLOC:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 != RELC_NONE)
goto bad_context;
dst_restore_location (abfd, op1);
/* Stack defined location: pop index, push location counter from index
arg: none. */
case ETIR__C_CTL_STKDL:
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, dst_retrieve_location (abfd, op1), RELC_NONE);
+ if (!_bfd_vms_push (abfd, dst_retrieve_location (abfd, op1),
+ RELC_NONE))
+ return FALSE;
break;
case ETIR__C_OPR_NOP: /* No-op. */
break;
case ETIR__C_OPR_ADD: /* Add. */
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
if (rel1 == RELC_NONE && rel2 != RELC_NONE)
rel1 = rel2;
else if (rel1 != RELC_NONE && rel2 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, op1 + op2, rel1);
+ if (!_bfd_vms_push (abfd, op1 + op2, rel1))
+ return FALSE;
break;
case ETIR__C_OPR_SUB: /* Subtract. */
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
if (rel1 == RELC_NONE && rel2 != RELC_NONE)
rel1 = rel2;
else if ((rel1 & RELC_SEC_BASE) && (rel2 & RELC_SEC_BASE))
}
else if (rel1 != RELC_NONE && rel2 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, op2 - op1, rel1);
+ if (!_bfd_vms_push (abfd, op2 - op1, rel1))
+ return FALSE;
break;
case ETIR__C_OPR_MUL: /* Multiply. */
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
if (rel1 != RELC_NONE || rel2 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, op1 * op2, RELC_NONE);
+ if (!_bfd_vms_push (abfd, op1 * op2, RELC_NONE))
+ return FALSE;
break;
case ETIR__C_OPR_DIV: /* Divide. */
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
if (rel1 != RELC_NONE || rel2 != RELC_NONE)
goto bad_context;
if (op2 == 0)
- _bfd_vms_push (abfd, 0, RELC_NONE);
+ {
+ if (!_bfd_vms_push (abfd, 0, RELC_NONE))
+ return FALSE;
+ }
else
- _bfd_vms_push (abfd, op2 / op1, RELC_NONE);
+ {
+ if (!_bfd_vms_push (abfd, op2 / op1, RELC_NONE))
+ return FALSE;
+ }
break;
case ETIR__C_OPR_AND: /* Logical AND. */
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
if (rel1 != RELC_NONE || rel2 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, op1 & op2, RELC_NONE);
+ if (!_bfd_vms_push (abfd, op1 & op2, RELC_NONE))
+ return FALSE;
break;
case ETIR__C_OPR_IOR: /* Logical inclusive OR. */
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
if (rel1 != RELC_NONE || rel2 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, op1 | op2, RELC_NONE);
+ if (!_bfd_vms_push (abfd, op1 | op2, RELC_NONE))
+ return FALSE;
break;
case ETIR__C_OPR_EOR: /* Logical exclusive OR. */
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
if (rel1 != RELC_NONE || rel2 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, op1 ^ op2, RELC_NONE);
+ if (!_bfd_vms_push (abfd, op1 ^ op2, RELC_NONE))
+ return FALSE;
break;
case ETIR__C_OPR_NEG: /* Negate. */
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, -op1, RELC_NONE);
+ if (!_bfd_vms_push (abfd, -op1, RELC_NONE))
+ return FALSE;
break;
case ETIR__C_OPR_COM: /* Complement. */
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (rel1 != RELC_NONE)
goto bad_context;
- _bfd_vms_push (abfd, ~op1, RELC_NONE);
+ if (!_bfd_vms_push (abfd, ~op1, RELC_NONE))
+ return FALSE;
break;
case ETIR__C_OPR_ASH: /* Arithmetic shift. */
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
if (rel1 != RELC_NONE || rel2 != RELC_NONE)
{
bad_context:
op1 >>= -(int)op2;
else /* Shift left. */
op1 <<= (int)op2;
- _bfd_vms_push (abfd, op1, RELC_NONE); /* FIXME: sym. */
+ if (!_bfd_vms_push (abfd, op1, RELC_NONE)) /* FIXME: sym. */
+ return FALSE;
break;
case ETIR__C_OPR_INSV: /* Insert field. */
break;
case ETIR__C_OPR_SEL: /* Select. */
- _bfd_vms_pop (abfd, &op1, &rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
if (op1 & 0x01L)
- _bfd_vms_pop (abfd, &op1, &rel1);
+ {
+ if (!_bfd_vms_pop (abfd, &op1, &rel1))
+ return FALSE;
+ }
else
{
- _bfd_vms_pop (abfd, &op1, &rel1);
- _bfd_vms_pop (abfd, &op2, &rel2);
- _bfd_vms_push (abfd, op1, rel1);
+ if (!_bfd_vms_pop (abfd, &op1, &rel1)
+ || !_bfd_vms_pop (abfd, &op2, &rel2))
+ return FALSE;
+ if (!_bfd_vms_push (abfd, op1, rel1))
+ return FALSE;
}
break;
projects / deliverable / binutils-gdb.git / blobdiff