--- binutils.orig/gas/dw2gencfi.c 2022-09-08 13:54:05.539276706 +0100
+++ binutils-2.35.2/gas/dw2gencfi.c 2022-09-08 14:05:56.128016840 +0100
@@ -2054,6 +2054,64 @@ output_fde (struct fde_entry *fde, struc
symbol_set_value_now (end_address);
}
+/* Allow these insns to be put in the initial sequence of a CIE.
+ If J is non-NULL, then compare I and J insns for a match. */
+
+static inline bfd_boolean
+initial_cie_insn (const struct cfi_insn_data *i, const struct cfi_insn_data *j)
+{
+ if (j && i->insn != j->insn)
+ return FALSE;
+
+ switch (i->insn)
+ {
+ case DW_CFA_offset:
+ case DW_CFA_def_cfa:
+ case DW_CFA_val_offset:
+ if (j)
+ {
+ if (i->u.ri.reg != j->u.ri.reg)
+ return FALSE;
+ if (i->u.ri.offset != j->u.ri.offset)
+ return FALSE;
+ }
+ break;
+
+ case DW_CFA_register:
+ if (j)
+ {
+ if (i->u.rr.reg1 != j->u.rr.reg1)
+ return FALSE;
+ if (i->u.rr.reg2 != j->u.rr.reg2)
+ return FALSE;
+ }
+ break;
+
+ case DW_CFA_def_cfa_register:
+ case DW_CFA_restore:
+ case DW_CFA_undefined:
+ case DW_CFA_same_value:
+ if (j)
+ {
+ if (i->u.r != j->u.r)
+ return FALSE;
+ }
+ break;
+
+ case DW_CFA_def_cfa_offset:
+ if (j)
+ {
+ if (i->u.i != j->u.i)
+ return FALSE;
+ }
+ break;
+
+ default:
+ return FALSE;
+ }
+ return TRUE;
+}
+
static struct cie_entry *
select_cie_for_fde (struct fde_entry *fde, bfd_boolean eh_frame,
struct cfi_insn_data **pfirst, int align)
@@ -2099,71 +2157,15 @@ select_cie_for_fde (struct fde_entry *fd
i != cie->last && j != NULL;
i = i->next, j = j->next)
{
- if (i->insn != j->insn)
- goto fail;
- switch (i->insn)
- {
- case DW_CFA_advance_loc:
- case DW_CFA_remember_state:
- /* We reached the first advance/remember in the FDE,
- but did not reach the end of the CIE list. */
- goto fail;
-
- case DW_CFA_offset:
- case DW_CFA_def_cfa:
- if (i->u.ri.reg != j->u.ri.reg)
- goto fail;
- if (i->u.ri.offset != j->u.ri.offset)
- goto fail;
- break;
-
- case DW_CFA_register:
- if (i->u.rr.reg1 != j->u.rr.reg1)
- goto fail;
- if (i->u.rr.reg2 != j->u.rr.reg2)
- goto fail;
- break;
-
- case DW_CFA_def_cfa_register:
- case DW_CFA_restore:
- case DW_CFA_undefined:
- case DW_CFA_same_value:
- if (i->u.r != j->u.r)
- goto fail;
- break;
-
- case DW_CFA_def_cfa_offset:
- if (i->u.i != j->u.i)
- goto fail;
- break;
-
- case CFI_escape:
- case CFI_val_encoded_addr:
- case CFI_label:
- /* Don't bother matching these for now. */
- goto fail;
-
- default:
- abort ();
- }
+ if (!initial_cie_insn (i, j))
+ break;
}
- /* Success if we reached the end of the CIE list, and we've either
- run out of FDE entries or we've encountered an advance,
- remember, or escape. */
- if (i == cie->last
- && (!j
- || j->insn == DW_CFA_advance_loc
- || j->insn == DW_CFA_remember_state
- || j->insn == CFI_escape
- || j->insn == CFI_val_encoded_addr
- || j->insn == CFI_label))
+ if (i == cie->last)
{
*pfirst = j;
return cie;
}
-
- fail:;
}
cie = XNEW (struct cie_entry);
@@ -2181,11 +2183,7 @@ select_cie_for_fde (struct fde_entry *fd
#endif
for (i = cie->first; i ; i = i->next)
- if (i->insn == DW_CFA_advance_loc
- || i->insn == DW_CFA_remember_state
- || i->insn == CFI_escape
- || i->insn == CFI_val_encoded_addr
- || i->insn == CFI_label)
+ if (!initial_cie_insn (i, NULL))
break;
cie->last = i;