@@ -28992,6 +28992,27 @@ rs6000_init_dwarf_reg_sizes_extra (tree address)
emit_move_insn (adjust_address (mem, mode, offset), value);
}
}
+
+ if (TARGET_MACHO && ! TARGET_ALTIVEC)
+ {
+ int i;
+ enum machine_mode mode = TYPE_MODE (char_type_node);
+ rtx addr = expand_expr (address, NULL_RTX, VOIDmode, EXPAND_NORMAL);
+ rtx mem = gen_rtx_MEM (BLKmode, addr);
+ rtx value = gen_int_mode (16, mode);
+
+ /* On Darwin, libgcc may be built to run on both G3 and G4/5.
+ The unwinder still needs to know the size of Altivec registers. */
+
+ for (i = FIRST_ALTIVEC_REGNO; i < LAST_ALTIVEC_REGNO+1; i++)
+ {
+ int column = DWARF_REG_TO_UNWIND_COLUMN (i);
+ HOST_WIDE_INT offset
+ = DWARF_FRAME_REGNUM (column) * GET_MODE_SIZE (mode);
+
+ emit_move_insn (adjust_address (mem, mode, offset), value);
+ }
+ }
}
/* Map internal gcc register numbers to DWARF2 register numbers. */