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-rw-r--r--loc2c.c41
1 files changed, 37 insertions, 4 deletions
diff --git a/loc2c.c b/loc2c.c
index 7cae16cd..5f4e4495 100644
--- a/loc2c.c
+++ b/loc2c.c
@@ -251,9 +251,11 @@ translate (struct obstack *pool, int indent, Dwarf_Addr addrbias,
break;
case DW_OP_drop:
- POP (ignore);
- emit ("%*s/* drop " STACKFMT "*/\n", indent * 2, "", ignore);
- break;
+ {
+ POP (ignore);
+ emit ("%*s/* drop " STACKFMT "*/\n", indent * 2, "", ignore);
+ break;
+ }
case DW_OP_pick:
sp = expr[i].number;
@@ -622,7 +624,7 @@ location_relative (struct obstack *pool,
const Dwarf_Op *expr, size_t len, Dwarf_Addr address,
struct location **input, Dwarf_Attribute *fb_attr)
{
- Dwarf_Sword *stack;
+ Dwarf_Sword *stack = NULL;
unsigned int stack_depth = 0, max_stack = 0;
inline void deepen (void)
{
@@ -1667,7 +1669,38 @@ c_translate_pointer_store (struct obstack *pool, int indent,
}
+/* Translate a fragment to add an offset to the currently calculated
+ address of the input location. Used for struct fields. Only works
+ when location is already an actual base address.
+*/
+
+void
+c_translate_add_offset (struct obstack *pool, int indent, const char *comment,
+ Dwarf_Sword off, struct location **input)
+{
+ indent++;
+ if (comment == NULL || comment[0] == '\0')
+ comment = "field offset";
+ switch ((*input)->type)
+ {
+ case loc_address:
+ obstack_printf (pool, "%*saddr += " SFORMAT "; // %s\n",
+ indent * 2 + 2, "", off, comment);
+ *input = (*input)->next = new_synthetic_loc (pool, *input, false);
+ break;
+ case loc_register:
+ FAIL (*input, N_("cannot add offset of object in register"));
+ break;
+ case loc_noncontiguous:
+ FAIL (*input, N_("cannot add offset of noncontiguous object"));
+ break;
+
+ default:
+ abort ();
+ break;
+ }
+}
/* Determine the element stride of an array type. */
static Dwarf_Word