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[PATCH v6 09/15] vla: resolve dynamic bounds if value contents is a constant byte-sequence
- From: Sanimir Agovic <sanimir dot agovic at intel dot com>
- To: brobecker at adacore dot com
- Cc: gdb-patches at sourceware dot org, tromey at redhat dot com
- Date: Thu, 10 Apr 2014 14:40:11 +0200
- Subject: [PATCH v6 09/15] vla: resolve dynamic bounds if value contents is a constant byte-sequence
- Authentication-results: sourceware.org; auth=none
- References: <1397133617-26681-1-git-send-email-sanimir dot agovic at intel dot com>
A variable location might be a constant value and therefore no inferior memory
access is needed to read the content. In this case try to resolve the type
bounds.
2013-11-26 Sanimir Agovic <sanimir.agovic@intel.com>
Keven Boell <keven.boell@intel.com>
* findvar.c (default_read_var_value): Resolve dynamic bounds if location
points to a constant blob.
Signed-off-by: Sanimir Agovic <sanimir.agovic@intel.com>
---
gdb/findvar.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/gdb/findvar.c b/gdb/findvar.c
index ec6afd6..d54637c 100644
--- a/gdb/findvar.c
+++ b/gdb/findvar.c
@@ -441,7 +441,10 @@ default_read_var_value (struct symbol *var, struct frame_info *frame)
switch (SYMBOL_CLASS (var))
{
case LOC_CONST:
- /* Put the constant back in target format. */
+ if (is_dynamic_type (type))
+ /* Value is a constant byte-sequence and needs no memory access. */
+ type = resolve_dynamic_type (type, /* Unused address. */ 0);
+ /* Put the constant back in target format. */
v = allocate_value (type);
store_signed_integer (value_contents_raw (v), TYPE_LENGTH (type),
gdbarch_byte_order (get_type_arch (type)),
@@ -468,6 +471,9 @@ default_read_var_value (struct symbol *var, struct frame_info *frame)
return v;
case LOC_CONST_BYTES:
+ if (is_dynamic_type (type))
+ /* Value is a constant byte-sequence and needs no memory access. */
+ type = resolve_dynamic_type (type, /* Unused address. */ 0);
v = allocate_value (type);
memcpy (value_contents_raw (v), SYMBOL_VALUE_BYTES (var),
TYPE_LENGTH (type));
--
1.8.4.2