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* [binutils-gdb] Add dwarf2_per_objfile parameter to dwarf2_read_addr_index
@ 2020-05-27 15:51 Simon Marchi
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From: Simon Marchi @ 2020-05-27 15:51 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=82ca3f5189e9f8199dc21baeabe2a31a342db163
commit 82ca3f5189e9f8199dc21baeabe2a31a342db163
Author: Simon Marchi <simon.marchi@efficios.com>
Date: Wed May 27 11:14:02 2020 -0400
Add dwarf2_per_objfile parameter to dwarf2_read_addr_index
Pass it all the way from the symbol batons. This allows removing a
dwarf2_per_cu_data::dwarf2_per_objfile reference.
gdb/ChangeLog:
* dwarf2/read.h (dwarf2_read_addr_index): Add dwarf2_per_objfile
parameter.
* dwarf2/read.c (dwarf2_read_addr_index): Likewise.
* dwarf2/loc.c (decode_debug_loclists_addresses): Add
dwarf2_per_objfile parameter.
(decode_debug_loc_dwo_addresses): Likewise.
(dwarf2_find_location_expression): Update.
(class dwarf_evaluate_loc_desc) <get_addr_index>: Update.
(locexpr_describe_location_piece): Add dwarf2_per_objfile
parameter.
(disassemble_dwarf_expression): Add dwarf2_per_objfile
parameter.
(locexpr_describe_location_1): Likewise.
(locexpr_describe_location): Update.
Change-Id: I8414755e41a87c92f96e408524cc7aaccf086cda
Diff:
---
gdb/ChangeLog | 17 ++++++++++++++++
gdb/dwarf2/loc.c | 60 +++++++++++++++++++++++++++++++------------------------
gdb/dwarf2/read.c | 5 +++--
gdb/dwarf2/read.h | 1 +
4 files changed, 55 insertions(+), 28 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 45e33cbc91b..1df34cc8622 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,20 @@
+2020-05-27 Simon Marchi <simon.marchi@efficios.com>
+
+ * dwarf2/read.h (dwarf2_read_addr_index): Add dwarf2_per_objfile
+ parameter.
+ * dwarf2/read.c (dwarf2_read_addr_index): Likewise.
+ * dwarf2/loc.c (decode_debug_loclists_addresses): Add
+ dwarf2_per_objfile parameter.
+ (decode_debug_loc_dwo_addresses): Likewise.
+ (dwarf2_find_location_expression): Update.
+ (class dwarf_evaluate_loc_desc) <get_addr_index>: Update.
+ (locexpr_describe_location_piece): Add dwarf2_per_objfile
+ parameter.
+ (disassemble_dwarf_expression): Add dwarf2_per_objfile
+ parameter.
+ (locexpr_describe_location_1): Likewise.
+ (locexpr_describe_location): Update.
+
2020-05-27 Simon Marchi <simon.marchi@efficios.com>
* dwarf2/read.h (struct dwarf2_per_cu_data) <text_offset>:
diff --git a/gdb/dwarf2/loc.c b/gdb/dwarf2/loc.c
index e2c61aa668c..5692cf00279 100644
--- a/gdb/dwarf2/loc.c
+++ b/gdb/dwarf2/loc.c
@@ -163,7 +163,8 @@ decode_debug_loc_addresses (const gdb_byte *loc_ptr, const gdb_byte *buf_end,
The result indicates the kind of entry found. */
static enum debug_loc_kind
-decode_debug_loclists_addresses (struct dwarf2_per_cu_data *per_cu,
+decode_debug_loclists_addresses (dwarf2_per_cu_data *per_cu,
+ dwarf2_per_objfile *per_objfile,
const gdb_byte *loc_ptr,
const gdb_byte *buf_end,
const gdb_byte **new_ptr,
@@ -184,14 +185,14 @@ decode_debug_loclists_addresses (struct dwarf2_per_cu_data *per_cu,
loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &u64);
if (loc_ptr == NULL)
return DEBUG_LOC_BUFFER_OVERFLOW;
- *high = dwarf2_read_addr_index (per_cu, u64);
+ *high = dwarf2_read_addr_index (per_cu, per_objfile, u64);
*new_ptr = loc_ptr;
return DEBUG_LOC_BASE_ADDRESS;
case DW_LLE_startx_length:
loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &u64);
if (loc_ptr == NULL)
return DEBUG_LOC_BUFFER_OVERFLOW;
- *low = dwarf2_read_addr_index (per_cu, u64);
+ *low = dwarf2_read_addr_index (per_cu, per_objfile, u64);
*high = *low;
loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &u64);
if (loc_ptr == NULL)
@@ -253,7 +254,8 @@ decode_debug_loclists_addresses (struct dwarf2_per_cu_data *per_cu,
The result indicates the kind of entry found. */
static enum debug_loc_kind
-decode_debug_loc_dwo_addresses (struct dwarf2_per_cu_data *per_cu,
+decode_debug_loc_dwo_addresses (dwarf2_per_cu_data *per_cu,
+ dwarf2_per_objfile *per_objfile,
const gdb_byte *loc_ptr,
const gdb_byte *buf_end,
const gdb_byte **new_ptr,
@@ -275,25 +277,25 @@ decode_debug_loc_dwo_addresses (struct dwarf2_per_cu_data *per_cu,
loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &high_index);
if (loc_ptr == NULL)
return DEBUG_LOC_BUFFER_OVERFLOW;
- *high = dwarf2_read_addr_index (per_cu, high_index);
+ *high = dwarf2_read_addr_index (per_cu, per_objfile, high_index);
*new_ptr = loc_ptr;
return DEBUG_LOC_BASE_ADDRESS;
case DW_LLE_GNU_start_end_entry:
loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &low_index);
if (loc_ptr == NULL)
return DEBUG_LOC_BUFFER_OVERFLOW;
- *low = dwarf2_read_addr_index (per_cu, low_index);
+ *low = dwarf2_read_addr_index (per_cu, per_objfile, low_index);
loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &high_index);
if (loc_ptr == NULL)
return DEBUG_LOC_BUFFER_OVERFLOW;
- *high = dwarf2_read_addr_index (per_cu, high_index);
+ *high = dwarf2_read_addr_index (per_cu, per_objfile, high_index);
*new_ptr = loc_ptr;
return DEBUG_LOC_START_END;
case DW_LLE_GNU_start_length_entry:
loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &low_index);
if (loc_ptr == NULL)
return DEBUG_LOC_BUFFER_OVERFLOW;
- *low = dwarf2_read_addr_index (per_cu, low_index);
+ *low = dwarf2_read_addr_index (per_cu, per_objfile, low_index);
if (loc_ptr + 4 > buf_end)
return DEBUG_LOC_BUFFER_OVERFLOW;
*high = *low;
@@ -340,6 +342,7 @@ dwarf2_find_location_expression (struct dwarf2_loclist_baton *baton,
if (baton->per_cu->version () < 5 && baton->from_dwo)
kind = decode_debug_loc_dwo_addresses (baton->per_cu,
+ baton->per_objfile,
loc_ptr, buf_end, &new_ptr,
&low, &high, byte_order);
else if (baton->per_cu->version () < 5)
@@ -349,6 +352,7 @@ dwarf2_find_location_expression (struct dwarf2_loclist_baton *baton,
signed_addr_p);
else
kind = decode_debug_loclists_addresses (baton->per_cu,
+ baton->per_objfile,
loc_ptr, buf_end, &new_ptr,
&low, &high, byte_order,
addr_size, signed_addr_p);
@@ -682,7 +686,7 @@ public:
CORE_ADDR get_addr_index (unsigned int index) override
{
- return dwarf2_read_addr_index (per_cu, index);
+ return dwarf2_read_addr_index (per_cu, per_objfile, index);
}
/* Callback function for get_object_address. Return the address of the VLA
@@ -3698,11 +3702,12 @@ locexpr_regname (struct gdbarch *gdbarch, int dwarf_regnum)
static const gdb_byte *
locexpr_describe_location_piece (struct symbol *symbol, struct ui_file *stream,
- CORE_ADDR addr, struct objfile *objfile,
- struct dwarf2_per_cu_data *per_cu,
+ CORE_ADDR addr, dwarf2_per_cu_data *per_cu,
+ dwarf2_per_objfile *per_objfile,
const gdb_byte *data, const gdb_byte *end,
unsigned int addr_size)
{
+ objfile *objfile = per_objfile->objfile;
struct gdbarch *gdbarch = objfile->arch ();
size_t leb128_size;
@@ -3841,7 +3846,7 @@ locexpr_describe_location_piece (struct symbol *symbol, struct ui_file *stream,
uint64_t offset;
data = safe_read_uleb128 (data + 1, end, &offset);
- offset = dwarf2_read_addr_index (per_cu, offset);
+ offset = dwarf2_read_addr_index (per_cu, per_objfile, offset);
fprintf_filtered (stream,
_("a thread-local variable at offset 0x%s "
"in the thread-local storage for `%s'"),
@@ -3874,7 +3879,8 @@ disassemble_dwarf_expression (struct ui_file *stream,
int offset_size, const gdb_byte *start,
const gdb_byte *data, const gdb_byte *end,
int indent, int all,
- struct dwarf2_per_cu_data *per_cu)
+ dwarf2_per_cu_data *per_cu,
+ dwarf2_per_objfile *per_objfile)
{
while (data < end
&& (all
@@ -4212,7 +4218,7 @@ disassemble_dwarf_expression (struct ui_file *stream,
fputc_filtered ('\n', stream);
disassemble_dwarf_expression (stream, arch, addr_size, offset_size,
start, data, data + ul, indent + 2,
- all, per_cu);
+ all, per_cu, per_objfile);
data += ul;
continue;
@@ -4225,12 +4231,12 @@ disassemble_dwarf_expression (struct ui_file *stream,
case DW_OP_addrx:
case DW_OP_GNU_addr_index:
data = safe_read_uleb128 (data, end, &ul);
- ul = dwarf2_read_addr_index (per_cu, ul);
+ ul = dwarf2_read_addr_index (per_cu, per_objfile, ul);
fprintf_filtered (stream, " 0x%s", phex_nz (ul, addr_size));
break;
case DW_OP_GNU_const_index:
data = safe_read_uleb128 (data, end, &ul);
- ul = dwarf2_read_addr_index (per_cu, ul);
+ ul = dwarf2_read_addr_index (per_cu, per_objfile, ul);
fprintf_filtered (stream, " %s", pulongest (ul));
break;
@@ -4267,11 +4273,13 @@ static void
locexpr_describe_location_1 (struct symbol *symbol, CORE_ADDR addr,
struct ui_file *stream,
const gdb_byte *data, size_t size,
- struct objfile *objfile, unsigned int addr_size,
- int offset_size, struct dwarf2_per_cu_data *per_cu)
+ unsigned int addr_size,
+ int offset_size, dwarf2_per_cu_data *per_cu,
+ dwarf2_per_objfile *per_objfile)
{
const gdb_byte *end = data + size;
int first_piece = 1, bad = 0;
+ objfile *objfile = per_objfile->objfile;
while (data < end)
{
@@ -4286,7 +4294,7 @@ locexpr_describe_location_1 (struct symbol *symbol, CORE_ADDR addr,
if (!dwarf_always_disassemble)
{
data = locexpr_describe_location_piece (symbol, stream,
- addr, objfile, per_cu,
+ addr, per_cu, per_objfile,
data, end, addr_size);
/* If we printed anything, or if we have an empty piece,
then don't disassemble. */
@@ -4303,7 +4311,7 @@ locexpr_describe_location_1 (struct symbol *symbol, CORE_ADDR addr,
addr_size, offset_size, data,
data, end, 0,
dwarf_always_disassemble,
- per_cu);
+ per_cu, per_objfile);
}
if (data < end)
@@ -4363,15 +4371,13 @@ locexpr_describe_location (struct symbol *symbol, CORE_ADDR addr,
{
struct dwarf2_locexpr_baton *dlbaton
= (struct dwarf2_locexpr_baton *) SYMBOL_LOCATION_BATON (symbol);
- dwarf2_per_objfile *per_objfile = dlbaton->per_objfile;
- struct objfile *objfile = per_objfile->objfile;
unsigned int addr_size = dlbaton->per_cu->addr_size ();
int offset_size = dlbaton->per_cu->offset_size ();
locexpr_describe_location_1 (symbol, addr, stream,
dlbaton->data, dlbaton->size,
- objfile, addr_size, offset_size,
- dlbaton->per_cu);
+ addr_size, offset_size,
+ dlbaton->per_cu, dlbaton->per_objfile);
}
/* Describe the location of SYMBOL as an agent value in VALUE, generating
@@ -4529,6 +4535,7 @@ loclist_describe_location (struct symbol *symbol, CORE_ADDR addr,
if (dlbaton->per_cu->version () < 5 && dlbaton->from_dwo)
kind = decode_debug_loc_dwo_addresses (dlbaton->per_cu,
+ dlbaton->per_objfile,
loc_ptr, buf_end, &new_ptr,
&low, &high, byte_order);
else if (dlbaton->per_cu->version () < 5)
@@ -4538,6 +4545,7 @@ loclist_describe_location (struct symbol *symbol, CORE_ADDR addr,
signed_addr_p);
else
kind = decode_debug_loclists_addresses (dlbaton->per_cu,
+ dlbaton->per_objfile,
loc_ptr, buf_end, &new_ptr,
&low, &high, byte_order,
addr_size, signed_addr_p);
@@ -4590,8 +4598,8 @@ loclist_describe_location (struct symbol *symbol, CORE_ADDR addr,
/* Now describe this particular location. */
locexpr_describe_location_1 (symbol, low, stream, loc_ptr, length,
- objfile, addr_size, offset_size,
- dlbaton->per_cu);
+ addr_size, offset_size,
+ dlbaton->per_cu, dlbaton->per_objfile);
fprintf_filtered (stream, "\n");
diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 9169bac33e8..31251732ca3 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -19404,9 +19404,10 @@ read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr,
/* See read.h. */
CORE_ADDR
-dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, unsigned int addr_index)
+dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu,
+ dwarf2_per_objfile *dwarf2_per_objfile,
+ unsigned int addr_index)
{
- struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile;
struct dwarf2_cu *cu = per_cu->cu;
gdb::optional<ULONGEST> addr_base;
int addr_size;
diff --git a/gdb/dwarf2/read.h b/gdb/dwarf2/read.h
index 15951f5221d..68e322f8bbe 100644
--- a/gdb/dwarf2/read.h
+++ b/gdb/dwarf2/read.h
@@ -579,6 +579,7 @@ struct type *dwarf2_get_die_type (cu_offset die_offset,
may no longer exist. */
CORE_ADDR dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu,
+ dwarf2_per_objfile *dwarf2_per_objfile,
unsigned int addr_index);
/* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU.
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2020-05-27 15:51 [binutils-gdb] Add dwarf2_per_objfile parameter to dwarf2_read_addr_index Simon Marchi
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