/* dw2gencfi.c - Support for generating Dwarf2 CFI information.
- Copyright (C) 2003-2019 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 Free Software Foundation, Inc.
Contributed by Michal Ludvig <mludvig@suse.cz>
This file is part of GAS, the GNU Assembler.
#define compact_eh 0
#endif
-static struct hash_control *dwcfi_hash;
+static htab_t dwcfi_hash;
\f
/* Emit a single byte into the current segment. */
return r;
}
-static void
-dwcfi_hash_insert (const char *name, struct dwcfi_seg_list *item)
-{
- const char *error_string;
-
- if ((error_string = hash_jam (dwcfi_hash, name, (char *) item)))
- as_fatal (_("Inserting \"%s\" into structure table failed: %s"),
- name, error_string);
-}
-
static struct dwcfi_seg_list *
dwcfi_hash_find (char *name)
{
- return (struct dwcfi_seg_list *) hash_find (dwcfi_hash, name);
+ return (struct dwcfi_seg_list *) str_hash_find (dwcfi_hash, name);
}
static struct dwcfi_seg_list *
/* Initialize dwcfi_hash once. */
if (!dwcfi_hash)
- dwcfi_hash = hash_new ();
+ dwcfi_hash = str_htab_create ();
name = get_debugseg_name (cseg, base_name);
{
item = alloc_debugseg_item (make_debug_seg (cseg, name, flags), 0, name);
- dwcfi_hash_insert (item->seg_name, item);
+ str_hash_insert (dwcfi_hash, item->seg_name, item, 0);
}
else
free (name);
{ "cfi_remember_state", dot_cfi, DW_CFA_remember_state },
{ "cfi_restore_state", dot_cfi, DW_CFA_restore_state },
{ "cfi_window_save", dot_cfi, DW_CFA_GNU_window_save },
+ { "cfi_negate_ra_state", dot_cfi, DW_CFA_AARCH64_negate_ra_state },
{ "cfi_escape", dot_cfi_escape, 0 },
{ "cfi_signal_frame", dot_cfi, CFI_signal_frame },
{ "cfi_personality", dot_cfi_personality, 0 },
/* The code in ehopt.c expects that one byte of the encoding
is already allocated to the frag. This comes from the way
that it scans the .eh_frame section looking first for the
- .byte DW_CFA_advance_loc4. */
+ .byte DW_CFA_advance_loc4. Call frag_grow with the sum of
+ room needed by frag_more and frag_var to preallocate space
+ ensuring that the DW_CFA_advance_loc4 is in the fixed part
+ of the rs_cfa frag, so that the relax machinery can remove
+ the advance_loc should it advance by zero. */
+ frag_grow (5);
*frag_more (1) = DW_CFA_advance_loc4;
frag_var (rs_cfa, 4, 0, DWARF2_LINE_MIN_INSN_LENGTH << 3,
if (fmt != dwarf2_format_32bit)
out_four (-1);
}
- out_one (DW_CIE_VERSION); /* Version. */
+ out_one (flag_dwarf_cie_version); /* Version. */
if (eh_frame)
{
out_one ('z'); /* Augmentation. */
if (cie->signal_frame)
out_one ('S');
out_one (0);
+ if (flag_dwarf_cie_version >= 4)
+ {
+ /* For now we are assuming a flat address space with 4 or 8 byte
+ addresses. */
+ int address_size = dwarf2_format_32bit ? 4 : 8;
+ out_one (address_size); /* Address size. */
+ out_one (0); /* Segment size. */
+ }
out_uleb128 (DWARF2_LINE_MIN_INSN_LENGTH); /* Code alignment. */
out_sleb128 (DWARF2_CIE_DATA_ALIGNMENT); /* Data alignment. */
- if (DW_CIE_VERSION == 1) /* Return column. */
- out_one (cie->return_column);
+ if (flag_dwarf_cie_version == 1) /* Return column. */
+ {
+ if ((cie->return_column & 0xff) != cie->return_column)
+ as_bad (_("return column number %d overflows in CIE version 1"),
+ cie->return_column);
+ out_one (cie->return_column);
+ }
else
out_uleb128 (cie->return_column);
if (eh_frame)