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Support DW_OP_GNU_parameter_ref for -O2 -g inferiors (BZ 827375).

This commit is contained in:
Jan Kratochvil 2012-06-14 09:41:43 +02:00
parent c382081360
commit 31e8955039
3 changed files with 1290 additions and 1 deletions
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416
gdb-parameterref-1of2.patch Normal file
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@ -0,0 +1,416 @@
http://sourceware.org/ml/gdb-patches/2012-06/msg00458.html
Subject: [patch 1/2] Generalize call_site.parameter key ("code cleanup")
Hi,
previously parameter could be identified either via DW_OP_reg or via
DW_OP_fbreg (both in DW_AT_location). As [patch 2/2] adds new identification
via DW_AT_abstract_origin generalize this two state deciding into more general
enum.
Thanks,
Jan
gdb/
2012-06-14 Jan Kratochvil <jan.kratochvil@redhat.com>
Code cleanup: Generalize call_site.parameter key.
* dwarf2expr.c (execute_stack_op) <DW_OP_GNU_entry_value>: Remove
variable dwarf_reg. New variable kind_u. Update parameters to
push_dwarf_reg_entry_value.
(ctx_no_push_dwarf_reg_entry_value): Update parameters.
* dwarf2expr.h (enum call_site_parameter_kind)
(union call_site_parameter_u): Forward declarations.
(struct dwarf_expr_context_funcs): Update parameters and their
description for push_dwarf_reg_entry_value.
(ctx_no_push_dwarf_reg_entry_value): Update parameters.
* dwarf2loc.c (call_site_parameter_matches): New function.
(dwarf_expr_reg_to_entry_parameter): Update parameters and their
description. Use call_site_parameter_matches.
(dwarf_expr_push_dwarf_reg_entry_value, value_of_dwarf_reg_entry):
Update parameters and their description.
(value_of_dwarf_block_entry): Remove variables dwarf_reg and fb_offset.
New variable kind_u. Adjust the caller for updated parameters.
(needs_dwarf_reg_entry_value): Update parameters.
* dwarf2read.c (read_call_site_scope): New variable loc. Use it
instead of attr. Update for the changed fields of struct
call_site_parameter.
* gdbtypes.h: Include dwarf2expr.h.
(enum call_site_parameter_kind): New.
(struct call_site.parameter): New field kind. Wrap dwarf_reg and
fb_offset into new union u.
--- a/gdb/dwarf2expr.c
+++ b/gdb/dwarf2expr.c
@@ -1355,33 +1355,35 @@ execute_stack_op (struct dwarf_expr_context *ctx,
case DW_OP_GNU_entry_value:
{
uint64_t len;
- int dwarf_reg;
CORE_ADDR deref_size;
+ union call_site_parameter_u kind_u;
op_ptr = safe_read_uleb128 (op_ptr, op_end, &len);
if (op_ptr + len > op_end)
error (_("DW_OP_GNU_entry_value: too few bytes available."));
- dwarf_reg = dwarf_block_to_dwarf_reg (op_ptr, op_ptr + len);
- if (dwarf_reg != -1)
+ kind_u.dwarf_reg = dwarf_block_to_dwarf_reg (op_ptr, op_ptr + len);
+ if (kind_u.dwarf_reg != -1)
{
op_ptr += len;
- ctx->funcs->push_dwarf_reg_entry_value (ctx, dwarf_reg,
- 0 /* unused */,
+ ctx->funcs->push_dwarf_reg_entry_value (ctx,
+ CALL_SITE_PARAMETER_DWARF_REG,
+ kind_u,
-1 /* deref_size */);
goto no_push;
}
- dwarf_reg = dwarf_block_to_dwarf_reg_deref (op_ptr, op_ptr + len,
- &deref_size);
- if (dwarf_reg != -1)
+ kind_u.dwarf_reg = dwarf_block_to_dwarf_reg_deref (op_ptr,
+ op_ptr + len,
+ &deref_size);
+ if (kind_u.dwarf_reg != -1)
{
if (deref_size == -1)
deref_size = ctx->addr_size;
op_ptr += len;
- ctx->funcs->push_dwarf_reg_entry_value (ctx, dwarf_reg,
- 0 /* unused */,
- deref_size);
+ ctx->funcs->push_dwarf_reg_entry_value (ctx,
+ CALL_SITE_PARAMETER_DWARF_REG,
+ kind_u, deref_size);
goto no_push;
}
@@ -1533,7 +1535,8 @@ ctx_no_get_base_type (struct dwarf_expr_context *ctx, cu_offset die)
void
ctx_no_push_dwarf_reg_entry_value (struct dwarf_expr_context *ctx,
- int dwarf_reg, CORE_ADDR fb_offset,
+ enum call_site_parameter_kind kind,
+ union call_site_parameter_u kind_u,
int deref_size)
{
internal_error (__FILE__, __LINE__,
--- a/gdb/dwarf2expr.h
+++ b/gdb/dwarf2expr.h
@@ -26,6 +26,8 @@
#include "leb128.h"
struct dwarf_expr_context;
+enum call_site_parameter_kind;
+union call_site_parameter_u;
/* Offset relative to the start of its containing CU (compilation unit). */
typedef struct
@@ -77,14 +79,12 @@ struct dwarf_expr_context_funcs
struct type *(*get_base_type) (struct dwarf_expr_context *ctx, cu_offset die);
/* Push on DWARF stack an entry evaluated for DW_TAG_GNU_call_site's
- DWARF_REG/FB_OFFSET at the caller of specified BATON. If DWARF register
- number DWARF_REG specifying the push_dwarf_reg_entry_value parameter is
- not -1 FB_OFFSET is ignored. Otherwise FB_OFFSET specifies stack
- parameter offset against caller's stack pointer (which equals the callee's
- frame base). If DEREF_SIZE is not -1 then use
- DW_AT_GNU_call_site_data_value instead of DW_AT_GNU_call_site_value. */
+ parameter matching KIND and KIND_U at the caller of specified BATON.
+ If DEREF_SIZE is not -1 then use DW_AT_GNU_call_site_data_value instead of
+ DW_AT_GNU_call_site_value. */
void (*push_dwarf_reg_entry_value) (struct dwarf_expr_context *ctx,
- int dwarf_reg, CORE_ADDR fb_offset,
+ enum call_site_parameter_kind kind,
+ union call_site_parameter_u kind_u,
int deref_size);
/* Return the address indexed by DW_OP_GNU_addr_index.
@@ -289,7 +289,8 @@ void ctx_no_dwarf_call (struct dwarf_expr_context *ctx, cu_offset die_offset);
struct type *ctx_no_get_base_type (struct dwarf_expr_context *ctx,
cu_offset die);
void ctx_no_push_dwarf_reg_entry_value (struct dwarf_expr_context *ctx,
- int dwarf_reg, CORE_ADDR fb_offset,
+ enum call_site_parameter_kind kind,
+ union call_site_parameter_u kind_u,
int deref_size);
CORE_ADDR ctx_no_get_addr_index (void *baton, unsigned int index);
--- a/gdb/dwarf2loc.c
+++ b/gdb/dwarf2loc.c
@@ -929,16 +929,34 @@ call_site_find_chain (struct gdbarch *gdbarch, CORE_ADDR caller_pc,
return retval;
}
-/* Fetch call_site_parameter from caller matching the parameters. FRAME is for
- callee. See DWARF_REG and FB_OFFSET description at struct
- dwarf_expr_context_funcs->push_dwarf_reg_entry_value.
+/* Return 1 if KIND and KIND_U match PARAMETER. Return 0 otherwise. */
+
+static int
+call_site_parameter_matches (struct call_site_parameter *parameter,
+ enum call_site_parameter_kind kind,
+ union call_site_parameter_u kind_u)
+{
+ if (kind == parameter->kind)
+ switch (kind)
+ {
+ case CALL_SITE_PARAMETER_DWARF_REG:
+ return kind_u.dwarf_reg == parameter->u.dwarf_reg;
+ case CALL_SITE_PARAMETER_FB_OFFSET:
+ return kind_u.fb_offset == parameter->u.fb_offset;
+ }
+ return 0;
+}
+
+/* Fetch call_site_parameter from caller matching KIND and KIND_U.
+ FRAME is for callee.
Function always returns non-NULL, it throws NO_ENTRY_VALUE_ERROR
otherwise. */
static struct call_site_parameter *
-dwarf_expr_reg_to_entry_parameter (struct frame_info *frame, int dwarf_reg,
- CORE_ADDR fb_offset,
+dwarf_expr_reg_to_entry_parameter (struct frame_info *frame,
+ enum call_site_parameter_kind kind,
+ union call_site_parameter_u kind_u,
struct dwarf2_per_cu_data **per_cu_return)
{
CORE_ADDR func_addr = get_frame_func (frame);
@@ -1001,12 +1019,7 @@ dwarf_expr_reg_to_entry_parameter (struct frame_info *frame, int dwarf_reg,
for (iparams = 0; iparams < call_site->parameter_count; iparams++)
{
parameter = &call_site->parameter[iparams];
- if (parameter->dwarf_reg == -1 && dwarf_reg == -1)
- {
- if (parameter->fb_offset == fb_offset)
- break;
- }
- else if (parameter->dwarf_reg == dwarf_reg)
+ if (call_site_parameter_matches (parameter, kind, kind_u))
break;
}
if (iparams == call_site->parameter_count)
@@ -1063,17 +1076,17 @@ dwarf_entry_parameter_to_value (struct call_site_parameter *parameter,
return dwarf2_evaluate_loc_desc (type, caller_frame, data, size + 1, per_cu);
}
-/* Execute call_site_parameter's DWARF block matching DEREF_SIZE for caller of
- the CTX's frame. CTX must be of dwarf_expr_ctx_funcs kind. See DWARF_REG
- and FB_OFFSET description at struct
- dwarf_expr_context_funcs->push_dwarf_reg_entry_value.
+/* Execute DWARF block of call_site_parameter which matches KIND and KIND_U.
+ Choose DEREF_SIZE value of that parameter. Search caller of the CTX's
+ frame. CTX must be of dwarf_expr_ctx_funcs kind.
The CTX caller can be from a different CU - per_cu_dwarf_call implementation
can be more simple as it does not support cross-CU DWARF executions. */
static void
dwarf_expr_push_dwarf_reg_entry_value (struct dwarf_expr_context *ctx,
- int dwarf_reg, CORE_ADDR fb_offset,
+ enum call_site_parameter_kind kind,
+ union call_site_parameter_u kind_u,
int deref_size)
{
struct dwarf_expr_baton *debaton;
@@ -1090,7 +1103,7 @@ dwarf_expr_push_dwarf_reg_entry_value (struct dwarf_expr_context *ctx,
frame = debaton->frame;
caller_frame = get_prev_frame (frame);
- parameter = dwarf_expr_reg_to_entry_parameter (frame, dwarf_reg, fb_offset,
+ parameter = dwarf_expr_reg_to_entry_parameter (frame, kind, kind_u,
&caller_per_cu);
data_src = deref_size == -1 ? parameter->value : parameter->data_value;
size = deref_size == -1 ? parameter->value_size : parameter->data_value_size;
@@ -1187,17 +1200,17 @@ static const struct lval_funcs entry_data_value_funcs =
entry_data_value_free_closure
};
-/* Read parameter of TYPE at (callee) FRAME's function entry. DWARF_REG and
- FB_OFFSET are used to match DW_AT_location at the caller's
- DW_TAG_GNU_call_site_parameter. See DWARF_REG and FB_OFFSET description at
- struct dwarf_expr_context_funcs->push_dwarf_reg_entry_value.
+/* Read parameter of TYPE at (callee) FRAME's function entry. KIND and KIND_U
+ are used to match DW_AT_location at the caller's
+ DW_TAG_GNU_call_site_parameter.
Function always returns non-NULL value. It throws NO_ENTRY_VALUE_ERROR if it
cannot resolve the parameter for any reason. */
static struct value *
value_of_dwarf_reg_entry (struct type *type, struct frame_info *frame,
- int dwarf_reg, CORE_ADDR fb_offset)
+ enum call_site_parameter_kind kind,
+ union call_site_parameter_u kind_u)
{
struct type *checked_type = check_typedef (type);
struct type *target_type = TYPE_TARGET_TYPE (checked_type);
@@ -1207,7 +1220,7 @@ value_of_dwarf_reg_entry (struct type *type, struct frame_info *frame,
struct dwarf2_per_cu_data *caller_per_cu;
CORE_ADDR addr;
- parameter = dwarf_expr_reg_to_entry_parameter (frame, dwarf_reg, fb_offset,
+ parameter = dwarf_expr_reg_to_entry_parameter (frame, kind, kind_u,
&caller_per_cu);
outer_val = dwarf_entry_parameter_to_value (parameter, -1 /* deref_size */,
@@ -1259,15 +1272,16 @@ static struct value *
value_of_dwarf_block_entry (struct type *type, struct frame_info *frame,
const gdb_byte *block, size_t block_len)
{
- int dwarf_reg;
- CORE_ADDR fb_offset;
+ union call_site_parameter_u kind_u;
- dwarf_reg = dwarf_block_to_dwarf_reg (block, block + block_len);
- if (dwarf_reg != -1)
- return value_of_dwarf_reg_entry (type, frame, dwarf_reg, 0 /* unused */);
+ kind_u.dwarf_reg = dwarf_block_to_dwarf_reg (block, block + block_len);
+ if (kind_u.dwarf_reg != -1)
+ return value_of_dwarf_reg_entry (type, frame, CALL_SITE_PARAMETER_DWARF_REG,
+ kind_u);
- if (dwarf_block_to_fb_offset (block, block + block_len, &fb_offset))
- return value_of_dwarf_reg_entry (type, frame, -1, fb_offset);
+ if (dwarf_block_to_fb_offset (block, block + block_len, &kind_u.fb_offset))
+ return value_of_dwarf_reg_entry (type, frame, CALL_SITE_PARAMETER_FB_OFFSET,
+ kind_u);
/* This can normally happen - throw NO_ENTRY_VALUE_ERROR to get the message
suppressed during normal operation. The expression can be arbitrary if
@@ -2358,7 +2372,8 @@ needs_frame_dwarf_call (struct dwarf_expr_context *ctx, cu_offset die_offset)
static void
needs_dwarf_reg_entry_value (struct dwarf_expr_context *ctx,
- int dwarf_reg, CORE_ADDR fb_offset, int deref_size)
+ enum call_site_parameter_kind kind,
+ union call_site_parameter_u kind_u, int deref_size)
{
struct needs_frame_baton *nf_baton = ctx->baton;
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -7816,6 +7816,7 @@ read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu)
child_die = sibling_die (child_die))
{
struct call_site_parameter *parameter;
+ struct attribute *loc;
if (child_die->tag != DW_TAG_GNU_call_site_parameter)
{
@@ -7829,8 +7830,8 @@ read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu)
/* DW_AT_location specifies the register number. Value of the data
assumed for the register is contained in DW_AT_GNU_call_site_value. */
- attr = dwarf2_attr (child_die, DW_AT_location, cu);
- if (!attr || !attr_form_is_block (attr))
+ loc = dwarf2_attr (child_die, DW_AT_location, cu);
+ if (loc == NULL || !attr_form_is_block (loc))
{
complaint (&symfile_complaints,
_("No DW_FORM_block* DW_AT_location for "
@@ -7838,19 +7839,26 @@ read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu)
child_die->offset.sect_off, objfile->name);
continue;
}
- parameter->dwarf_reg = dwarf_block_to_dwarf_reg (DW_BLOCK (attr)->data,
- &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size]);
- if (parameter->dwarf_reg == -1
- && !dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (attr)->data,
- &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size],
- &parameter->fb_offset))
+ else
{
- complaint (&symfile_complaints,
- _("Only single DW_OP_reg or DW_OP_fbreg is supported "
- "for DW_FORM_block* DW_AT_location for "
- "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"),
- child_die->offset.sect_off, objfile->name);
- continue;
+ parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg
+ (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]);
+ if (parameter->u.dwarf_reg != -1)
+ parameter->kind = CALL_SITE_PARAMETER_DWARF_REG;
+ else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data,
+ &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size],
+ &parameter->u.fb_offset))
+ parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET;
+ else
+ {
+ complaint (&symfile_complaints,
+ _("Only single DW_OP_reg or DW_OP_fbreg is supported "
+ "for DW_FORM_block* DW_AT_location is supported for "
+ "DW_TAG_GNU_call_site child DIE 0x%x "
+ "[in module %s]"),
+ child_die->offset.sect_off, objfile->name);
+ continue;
+ }
}
attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu);
--- a/gdb/gdbtypes.h
+++ b/gdb/gdbtypes.h
@@ -23,6 +23,7 @@
#define GDBTYPES_H 1
#include "hashtab.h"
+#include "dwarf2expr.h"
/* Forward declarations for prototypes. */
struct field;
@@ -915,6 +916,17 @@ struct func_type
struct call_site *tail_call_list;
};
+/* struct call_site_parameter can be referenced in callees by several ways. */
+
+enum call_site_parameter_kind
+{
+ /* Use field call_site_parameter.u.dwarf_reg. */
+ CALL_SITE_PARAMETER_DWARF_REG,
+
+ /* Use field call_site_parameter.u.fb_offset. */
+ CALL_SITE_PARAMETER_FB_OFFSET
+};
+
/* A place where a function gets called from, represented by
DW_TAG_GNU_call_site. It can be looked up from symtab->call_site_htab. */
@@ -948,15 +960,19 @@ struct call_site
/* Describe DW_TAG_GNU_call_site's DW_TAG_formal_parameter. */
struct call_site_parameter
{
- /* DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX as DWARF
- register number, for register passed parameters. If -1 then use
- fb_offset. */
- int dwarf_reg;
-
- /* Offset from the callee's frame base, for stack passed parameters.
- This equals offset from the caller's stack pointer. Valid only if
- DWARF_REGNUM is -1. */
- CORE_ADDR fb_offset;
+ ENUM_BITFIELD (call_site_parameter_kind) kind : 2;
+
+ union call_site_parameter_u
+ {
+ /* DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX as DWARF
+ register number, for register passed parameters. */
+ int dwarf_reg;
+
+ /* Offset from the callee's frame base, for stack passed parameters.
+ This equals offset from the caller's stack pointer. */
+ CORE_ADDR fb_offset;
+ }
+ u;
/* DW_TAG_formal_parameter's DW_AT_GNU_call_site_value. It is never
NULL. */

864
gdb-parameterref-2of2.patch Normal file
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@ -0,0 +1,864 @@
http://sourceware.org/ml/gdb-patches/2012-06/msg00459.html
Subject: [patch 2/2] Support gcc-4.7 DW_OP_GNU_parameter_ref
Hi,
this add-on to gdb.arch/amd64-entry-value.exp has been somehow forgotten:
[PATCH] Improve debug info for IPA-SRA optimized code - add DW_OP_GNU_parameter_ref support (PR debug/47858)
http://gcc.gnu.org/ml/gcc-patches/2011-06/msg00649.html
And for gcc-4.7+ -O2 -g code GDB may print (instead of the calculated value):
(gdb) p y
Unhandled dwarf expression opcode 0xfa
The support is pretty simple, there is just now third kind of binding between
callers and callees parameter values.
No regressions on {x86_64,x86_64-m32,i686}-fedora17-linux-gnu.
Thanks,
Jan
gdb/
2012-06-14 Jan Kratochvil <jan.kratochvil@redhat.com>
* dwarf2expr.c (execute_stack_op): Support DW_OP_GNU_parameter_ref.
* dwarf2loc.c (call_site_parameter_matches): Support
CALL_SITE_PARAMETER_PARAM_OFFSET.
(needs_dwarf_reg_entry_value): Push stub value.
* dwarf2read.c (read_call_site_scope): New variable origin. Support
CALL_SITE_PARAMETER_PARAM_OFFSET and its DW_AT_abstract_origin.
* gdbtypes.h (enum call_site_parameter_kind): New item
CALL_SITE_PARAMETER_PARAM_OFFSET.
(struct call_site.parameter.u): New field param_offset.
gdb/testsuite/
2012-06-14 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.arch/amd64-entry-value-param.S: New file.
* gdb.arch/amd64-entry-value-param.c: New file.
* gdb.arch/amd64-entry-value-param.exp: New file.
--- a/gdb/dwarf2expr.c
+++ b/gdb/dwarf2expr.c
@@ -1392,6 +1392,21 @@ execute_stack_op (struct dwarf_expr_context *ctx,
"or for DW_OP_breg*(0)+DW_OP_deref*"));
}
+ case DW_OP_GNU_parameter_ref:
+ {
+ cu_offset offset;
+ union call_site_parameter_u kind_u;
+
+ kind_u.param_offset.cu_off = extract_unsigned_integer (op_ptr, 4,
+ byte_order);
+ op_ptr += 4;
+ ctx->funcs->push_dwarf_reg_entry_value (ctx,
+ CALL_SITE_PARAMETER_PARAM_OFFSET,
+ kind_u,
+ -1 /* deref_size */);
+ }
+ goto no_push;
+
case DW_OP_GNU_const_type:
{
cu_offset type_die;
--- a/gdb/dwarf2loc.c
+++ b/gdb/dwarf2loc.c
@@ -943,6 +943,8 @@ call_site_parameter_matches (struct call_site_parameter *parameter,
return kind_u.dwarf_reg == parameter->u.dwarf_reg;
case CALL_SITE_PARAMETER_FB_OFFSET:
return kind_u.fb_offset == parameter->u.fb_offset;
+ case CALL_SITE_PARAMETER_PARAM_OFFSET:
+ return kind_u.param_offset.cu_off == parameter->u.param_offset.cu_off;
}
return 0;
}
@@ -2378,6 +2380,9 @@ needs_dwarf_reg_entry_value (struct dwarf_expr_context *ctx,
struct needs_frame_baton *nf_baton = ctx->baton;
nf_baton->needs_frame = 1;
+
+ /* The expression may require some stub values on DWARF stack. */
+ dwarf_expr_push_address (ctx, 0, 0);
}
/* DW_OP_GNU_addr_index doesn't require a frame. */
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -7816,7 +7816,7 @@ read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu)
child_die = sibling_die (child_die))
{
struct call_site_parameter *parameter;
- struct attribute *loc;
+ struct attribute *loc, *origin;
if (child_die->tag != DW_TAG_GNU_call_site_parameter)
{
@@ -7827,11 +7827,23 @@ read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu)
gdb_assert (call_site->parameter_count < nparams);
parameter = &call_site->parameter[call_site->parameter_count];
- /* DW_AT_location specifies the register number. Value of the data
- assumed for the register is contained in DW_AT_GNU_call_site_value. */
+ /* DW_AT_location specifies the register number or DW_AT_abstract_origin
+ specifies DW_TAG_formal_parameter. Value of the data assumed for the
+ register is contained in DW_AT_GNU_call_site_value. */
loc = dwarf2_attr (child_die, DW_AT_location, cu);
- if (loc == NULL || !attr_form_is_block (loc))
+ origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu);
+ if (loc == NULL && origin != NULL && is_ref_attr (origin))
+ {
+ sect_offset offset;
+
+ parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET;
+ offset = dwarf2_get_ref_die_offset (origin);
+ gdb_assert (offset.sect_off >= cu->header.offset.sect_off);
+ parameter->u.param_offset.cu_off = (offset.sect_off
+ - cu->header.offset.sect_off);
+ }
+ else if (loc == NULL || origin != NULL || !attr_form_is_block (loc))
{
complaint (&symfile_complaints,
_("No DW_FORM_block* DW_AT_location for "
--- a/gdb/gdbtypes.h
+++ b/gdb/gdbtypes.h
@@ -924,7 +924,10 @@ enum call_site_parameter_kind
CALL_SITE_PARAMETER_DWARF_REG,
/* Use field call_site_parameter.u.fb_offset. */
- CALL_SITE_PARAMETER_FB_OFFSET
+ CALL_SITE_PARAMETER_FB_OFFSET,
+
+ /* Use field call_site_parameter.u.param_offset. */
+ CALL_SITE_PARAMETER_PARAM_OFFSET
};
/* A place where a function gets called from, represented by
@@ -971,6 +974,11 @@ struct call_site
/* Offset from the callee's frame base, for stack passed parameters.
This equals offset from the caller's stack pointer. */
CORE_ADDR fb_offset;
+
+ /* Offset relative to the start of this PER_CU to
+ DW_TAG_formal_parameter which is referenced by both caller and
+ the callee. */
+ cu_offset param_offset;
}
u;
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-entry-value-param.S
@@ -0,0 +1,611 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2012 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* This file is compiled from gdb.arch/amd64-entry-value-param.c
+ using -g -dA -S -O2. */
+
+ .file "amd64-entry-value-param.c"
+ .text
+.Ltext0:
+ .p2align 4,,15
+ .type foo.isra.0.constprop.2, @function
+foo.isra.0.constprop.2:
+.LFB4:
+ .file 1 "gdb.arch/amd64-entry-value-param.c"
+ /* gdb.arch/amd64-entry-value-param.c:21 */
+ .loc 1 21 0
+ .cfi_startproc
+.LVL0:
+/* BLOCK 2 freq:10000 seq:0 */
+/* PRED: ENTRY [100.0%] (fallthru) */
+ /* gdb.arch/amd64-entry-value-param.c:26 */
+ .loc 1 26 0
+ movl vv(%rip), %eax
+ addl $1, %eax
+ movl %eax, vv(%rip)
+ /* gdb.arch/amd64-entry-value-param.c:27 */
+ .loc 1 27 0
+ leal 3(%rdi), %eax
+/* SUCC: EXIT [100.0%] */
+ /* gdb.arch/amd64-entry-value-param.c:28 */
+ .loc 1 28 0
+ ret
+ .cfi_endproc
+.LFE4:
+ .size foo.isra.0.constprop.2, .-foo.isra.0.constprop.2
+ .p2align 4,,15
+ .type bar.constprop.1, @function
+bar.constprop.1:
+.LFB5:
+ /* gdb.arch/amd64-entry-value-param.c:31 */
+ .loc 1 31 0
+ .cfi_startproc
+/* BLOCK 2 freq:10000 seq:0 */
+/* PRED: ENTRY [100.0%] (fallthru) */
+.LVL1:
+ pushq %rbx
+.LCFI0:
+ .cfi_def_cfa_offset 16
+ .cfi_offset 3, -16
+ /* gdb.arch/amd64-entry-value-param.c:33 */
+ .loc 1 33 0
+ movl $10, %edi
+ call foo.isra.0.constprop.2
+.LVL2:
+ movl $10, %edi
+ movl %eax, %ebx
+ call foo.isra.0.constprop.2
+.LVL3:
+ movl $16, %edi
+ addl %eax, %ebx
+ call foo.isra.0.constprop.2
+.LVL4:
+ leal 10(%rbx,%rax), %eax
+ /* gdb.arch/amd64-entry-value-param.c:34 */
+ .loc 1 34 0
+ popq %rbx
+.LCFI1:
+ .cfi_def_cfa_offset 8
+/* SUCC: EXIT [100.0%] */
+ ret
+ .cfi_endproc
+.LFE5:
+ .size bar.constprop.1, .-bar.constprop.1
+ .section .text.startup,"ax",@progbits
+ .p2align 4,,15
+ .globl main
+ .type main, @function
+main:
+.LFB2:
+ /* gdb.arch/amd64-entry-value-param.c:38 */
+ .loc 1 38 0
+ .cfi_startproc
+/* BLOCK 2 freq:10000 seq:0 */
+/* PRED: ENTRY [100.0%] (fallthru) */
+ /* gdb.arch/amd64-entry-value-param.c:39 */
+ .loc 1 39 0
+ jmp bar.constprop.1
+/* SUCC: EXIT [100.0%] (ab,sibcall) */
+.LVL5:
+ .cfi_endproc
+.LFE2:
+ .size main, .-main
+ .comm vv,4,4
+ .text
+.Letext0:
+ .section .debug_info,"",@progbits
+.Ldebug_info0:
+ .4byte 0x1b7 /* Length of Compilation Unit Info */
+ .2byte 0x2 /* DWARF version number */
+ .4byte .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
+ .byte 0x8 /* Pointer Size (in bytes) */
+ .uleb128 0x1 /* (DIE (0xb) DW_TAG_compile_unit) */
+ .4byte .LASF0 /* DW_AT_producer: "GNU C 4.7.1 20120612 (prerelease)" */
+ .byte 0x1 /* DW_AT_language */
+ .4byte .LASF1 /* DW_AT_name: "gdb.arch/amd64-entry-value-param.c" */
+ .4byte .LASF2 /* DW_AT_comp_dir: "" */
+ .4byte .Ldebug_ranges0+0 /* DW_AT_ranges */
+ .quad 0 /* DW_AT_low_pc */
+ .quad 0 /* DW_AT_entry_pc */
+ .4byte .Ldebug_line0 /* DW_AT_stmt_list */
+ .uleb128 0x2 /* (DIE (0x31) DW_TAG_subprogram) */
+ .ascii "foo\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x15 /* DW_AT_decl_line */
+ .byte 0x1 /* DW_AT_prototyped */
+ .4byte 0x79 /* DW_AT_type */
+ .byte 0 /* DW_AT_inline */
+ .4byte 0x79 /* DW_AT_sibling */
+ .uleb128 0x3 /* (DIE (0x42) DW_TAG_formal_parameter) */
+ .ascii "x\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x15 /* DW_AT_decl_line */
+ .4byte 0x79 /* DW_AT_type */
+ .uleb128 0x3 /* (DIE (0x4b) DW_TAG_formal_parameter) */
+ .ascii "y\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x15 /* DW_AT_decl_line */
+ .4byte 0x79 /* DW_AT_type */
+ .uleb128 0x3 /* (DIE (0x54) DW_TAG_formal_parameter) */
+ .ascii "z\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x15 /* DW_AT_decl_line */
+ .4byte 0x79 /* DW_AT_type */
+ .uleb128 0x4 /* (DIE (0x5d) DW_TAG_variable) */
+ .ascii "a\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x17 /* DW_AT_decl_line */
+ .4byte 0x79 /* DW_AT_type */
+ .uleb128 0x4 /* (DIE (0x66) DW_TAG_variable) */
+ .ascii "b\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x18 /* DW_AT_decl_line */
+ .4byte 0x79 /* DW_AT_type */
+ .uleb128 0x4 /* (DIE (0x6f) DW_TAG_variable) */
+ .ascii "c\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x19 /* DW_AT_decl_line */
+ .4byte 0x79 /* DW_AT_type */
+ .byte 0 /* end of children of DIE 0x31 */
+ .uleb128 0x5 /* (DIE (0x79) DW_TAG_base_type) */
+ .byte 0x4 /* DW_AT_byte_size */
+ .byte 0x5 /* DW_AT_encoding */
+ .ascii "int\0" /* DW_AT_name */
+ .uleb128 0x2 /* (DIE (0x80) DW_TAG_subprogram) */
+ .ascii "bar\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x1f /* DW_AT_decl_line */
+ .byte 0x1 /* DW_AT_prototyped */
+ .4byte 0x79 /* DW_AT_type */
+ .byte 0x1 /* DW_AT_inline */
+ .4byte 0x9b /* DW_AT_sibling */
+ .uleb128 0x3 /* (DIE (0x91) DW_TAG_formal_parameter) */
+ .ascii "x\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x1f /* DW_AT_decl_line */
+ .4byte 0x79 /* DW_AT_type */
+ .byte 0 /* end of children of DIE 0x80 */
+ .uleb128 0x6 /* (DIE (0x9b) DW_TAG_subprogram) */
+ .4byte 0x31 /* DW_AT_abstract_origin */
+ .quad .LFB4 /* DW_AT_low_pc */
+ .quad .LFE4 /* DW_AT_high_pc */
+ .byte 0x2 /* DW_AT_frame_base */
+ .byte 0x77 /* DW_OP_breg7 */
+ .sleb128 8
+ .byte 0x1 /* DW_AT_GNU_all_call_sites */
+ .4byte 0xf1 /* DW_AT_sibling */
+ .uleb128 0x7 /* (DIE (0xb8) DW_TAG_formal_parameter) */
+ .4byte 0x42 /* DW_AT_abstract_origin */
+ .byte 0x1 /* DW_AT_location */
+ .byte 0x55 /* DW_OP_reg5 */
+ .uleb128 0x7 /* (DIE (0xbf) DW_TAG_formal_parameter) */
+ .4byte 0x4b /* DW_AT_abstract_origin */
+ .byte 0x6 /* DW_AT_location */
+ .byte 0xfa /* DW_OP_GNU_parameter_ref */
+ .4byte 0x4b
+ .byte 0x9f /* DW_OP_stack_value */
+ .uleb128 0x8 /* (DIE (0xcb) DW_TAG_variable) */
+ .4byte 0x5d /* DW_AT_abstract_origin */
+ .byte 0x5 /* DW_AT_location */
+ .byte 0x75 /* DW_OP_breg5 */
+ .sleb128 0
+ .byte 0x31 /* DW_OP_lit1 */
+ .byte 0x24 /* DW_OP_shl */
+ .byte 0x9f /* DW_OP_stack_value */
+ .uleb128 0x8 /* (DIE (0xd6) DW_TAG_variable) */
+ .4byte 0x66 /* DW_AT_abstract_origin */
+ .byte 0x8 /* DW_AT_location */
+ .byte 0xfa /* DW_OP_GNU_parameter_ref */
+ .4byte 0x4b
+ .byte 0x31 /* DW_OP_lit1 */
+ .byte 0x24 /* DW_OP_shl */
+ .byte 0x9f /* DW_OP_stack_value */
+ .uleb128 0x9 /* (DIE (0xe4) DW_TAG_variable) */
+ .4byte 0x6f /* DW_AT_abstract_origin */
+ .byte 0x6 /* DW_AT_const_value */
+ .uleb128 0xa /* (DIE (0xea) DW_TAG_formal_parameter) */
+ .4byte 0x54 /* DW_AT_abstract_origin */
+ .byte 0x3 /* DW_AT_const_value */
+ .byte 0 /* end of children of DIE 0x9b */
+ .uleb128 0xb /* (DIE (0xf1) DW_TAG_subprogram) */
+ .4byte 0x80 /* DW_AT_abstract_origin */
+ .quad .LFB5 /* DW_AT_low_pc */
+ .quad .LFE5 /* DW_AT_high_pc */
+ .4byte .LLST0 /* DW_AT_frame_base */
+ .byte 0x1 /* DW_AT_GNU_all_call_sites */
+ .4byte 0x16c /* DW_AT_sibling */
+ .uleb128 0xa /* (DIE (0x10f) DW_TAG_formal_parameter) */
+ .4byte 0x91 /* DW_AT_abstract_origin */
+ .byte 0xa /* DW_AT_const_value */
+ .uleb128 0xc /* (DIE (0x115) DW_TAG_GNU_call_site) */
+ .quad .LVL2 /* DW_AT_low_pc */
+ .4byte 0x9b /* DW_AT_abstract_origin */
+ .4byte 0x133 /* DW_AT_sibling */
+ .uleb128 0xd /* (DIE (0x126) DW_TAG_GNU_call_site_parameter) */
+ .byte 0x1 /* DW_AT_location */
+ .byte 0x55 /* DW_OP_reg5 */
+ .byte 0x1 /* DW_AT_GNU_call_site_value */
+ .byte 0x3a /* DW_OP_lit10 */
+ .uleb128 0xe /* (DIE (0x12b) DW_TAG_GNU_call_site_parameter) */
+ .4byte 0x4b /* DW_AT_abstract_origin */
+ .byte 0x1 /* DW_AT_GNU_call_site_value */
+ .byte 0x32 /* DW_OP_lit2 */
+ .byte 0 /* end of children of DIE 0x115 */
+ .uleb128 0xc /* (DIE (0x133) DW_TAG_GNU_call_site) */
+ .quad .LVL3 /* DW_AT_low_pc */
+ .4byte 0x9b /* DW_AT_abstract_origin */
+ .4byte 0x151 /* DW_AT_sibling */
+ .uleb128 0xd /* (DIE (0x144) DW_TAG_GNU_call_site_parameter) */
+ .byte 0x1 /* DW_AT_location */
+ .byte 0x55 /* DW_OP_reg5 */
+ .byte 0x1 /* DW_AT_GNU_call_site_value */
+ .byte 0x3a /* DW_OP_lit10 */
+ .uleb128 0xe /* (DIE (0x149) DW_TAG_GNU_call_site_parameter) */
+ .4byte 0x4b /* DW_AT_abstract_origin */
+ .byte 0x1 /* DW_AT_GNU_call_site_value */
+ .byte 0x34 /* DW_OP_lit4 */
+ .byte 0 /* end of children of DIE 0x133 */
+ .uleb128 0xf /* (DIE (0x151) DW_TAG_GNU_call_site) */
+ .quad .LVL4 /* DW_AT_low_pc */
+ .4byte 0x9b /* DW_AT_abstract_origin */
+ .uleb128 0xd /* (DIE (0x15e) DW_TAG_GNU_call_site_parameter) */
+ .byte 0x1 /* DW_AT_location */
+ .byte 0x55 /* DW_OP_reg5 */
+ .byte 0x1 /* DW_AT_GNU_call_site_value */
+ .byte 0x40 /* DW_OP_lit16 */
+ .uleb128 0xe /* (DIE (0x163) DW_TAG_GNU_call_site_parameter) */
+ .4byte 0x4b /* DW_AT_abstract_origin */
+ .byte 0x1 /* DW_AT_GNU_call_site_value */
+ .byte 0x3a /* DW_OP_lit10 */
+ .byte 0 /* end of children of DIE 0x151 */
+ .byte 0 /* end of children of DIE 0xf1 */
+ .uleb128 0x10 /* (DIE (0x16c) DW_TAG_subprogram) */
+ .byte 0x1 /* DW_AT_external */
+ .4byte .LASF3 /* DW_AT_name: "main" */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x25 /* DW_AT_decl_line */
+ .byte 0x1 /* DW_AT_prototyped */
+ .4byte 0x79 /* DW_AT_type */
+ .quad .LFB2 /* DW_AT_low_pc */
+ .quad .LFE2 /* DW_AT_high_pc */
+ .byte 0x2 /* DW_AT_frame_base */
+ .byte 0x77 /* DW_OP_breg7 */
+ .sleb128 8
+ .byte 0x1 /* DW_AT_GNU_all_call_sites */
+ .4byte 0x1a0 /* DW_AT_sibling */
+ .uleb128 0x11 /* (DIE (0x191) DW_TAG_GNU_call_site) */
+ .quad .LVL5 /* DW_AT_low_pc */
+ .byte 0x1 /* DW_AT_GNU_tail_call */
+ .4byte 0xf1 /* DW_AT_abstract_origin */
+ .byte 0 /* end of children of DIE 0x16c */
+ .uleb128 0x12 /* (DIE (0x1a0) DW_TAG_variable) */
+ .ascii "vv\0" /* DW_AT_name */
+ .byte 0x1 /* DW_AT_decl_file (gdb.arch/amd64-entry-value-param.c) */
+ .byte 0x12 /* DW_AT_decl_line */
+ .4byte 0x1b5 /* DW_AT_type */
+ .byte 0x1 /* DW_AT_external */
+ .byte 0x9 /* DW_AT_location */
+ .byte 0x3 /* DW_OP_addr */
+ .quad vv
+ .uleb128 0x13 /* (DIE (0x1b5) DW_TAG_volatile_type) */
+ .4byte 0x79 /* DW_AT_type */
+ .byte 0 /* end of children of DIE 0xb */
+ .section .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+ .uleb128 0x1 /* (abbrev code) */
+ .uleb128 0x11 /* (TAG: DW_TAG_compile_unit) */
+ .byte 0x1 /* DW_children_yes */
+ .uleb128 0x25 /* (DW_AT_producer) */
+ .uleb128 0xe /* (DW_FORM_strp) */
+ .uleb128 0x13 /* (DW_AT_language) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0xe /* (DW_FORM_strp) */
+ .uleb128 0x1b /* (DW_AT_comp_dir) */
+ .uleb128 0xe /* (DW_FORM_strp) */
+ .uleb128 0x55 /* (DW_AT_ranges) */
+ .uleb128 0x6 /* (DW_FORM_data4) */
+ .uleb128 0x11 /* (DW_AT_low_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x52 /* (DW_AT_entry_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x10 /* (DW_AT_stmt_list) */
+ .uleb128 0x6 /* (DW_FORM_data4) */
+ .byte 0
+ .byte 0
+ .uleb128 0x2 /* (abbrev code) */
+ .uleb128 0x2e /* (TAG: DW_TAG_subprogram) */
+ .byte 0x1 /* DW_children_yes */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0x8 /* (DW_FORM_string) */
+ .uleb128 0x3a /* (DW_AT_decl_file) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3b /* (DW_AT_decl_line) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x27 /* (DW_AT_prototyped) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x49 /* (DW_AT_type) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x20 /* (DW_AT_inline) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x1 /* (DW_AT_sibling) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0x3 /* (abbrev code) */
+ .uleb128 0x5 /* (TAG: DW_TAG_formal_parameter) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0x8 /* (DW_FORM_string) */
+ .uleb128 0x3a /* (DW_AT_decl_file) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3b /* (DW_AT_decl_line) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x49 /* (DW_AT_type) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0x4 /* (abbrev code) */
+ .uleb128 0x34 /* (TAG: DW_TAG_variable) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0x8 /* (DW_FORM_string) */
+ .uleb128 0x3a /* (DW_AT_decl_file) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3b /* (DW_AT_decl_line) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x49 /* (DW_AT_type) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0x5 /* (abbrev code) */
+ .uleb128 0x24 /* (TAG: DW_TAG_base_type) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0xb /* (DW_AT_byte_size) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3e /* (DW_AT_encoding) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0x8 /* (DW_FORM_string) */
+ .byte 0
+ .byte 0
+ .uleb128 0x6 /* (abbrev code) */
+ .uleb128 0x2e /* (TAG: DW_TAG_subprogram) */
+ .byte 0x1 /* DW_children_yes */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x11 /* (DW_AT_low_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x12 /* (DW_AT_high_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x40 /* (DW_AT_frame_base) */
+ .uleb128 0xa /* (DW_FORM_block1) */
+ .uleb128 0x2117 /* (DW_AT_GNU_all_call_sites) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x1 /* (DW_AT_sibling) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0x7 /* (abbrev code) */
+ .uleb128 0x5 /* (TAG: DW_TAG_formal_parameter) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x2 /* (DW_AT_location) */
+ .uleb128 0xa /* (DW_FORM_block1) */
+ .byte 0
+ .byte 0
+ .uleb128 0x8 /* (abbrev code) */
+ .uleb128 0x34 /* (TAG: DW_TAG_variable) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x2 /* (DW_AT_location) */
+ .uleb128 0xa /* (DW_FORM_block1) */
+ .byte 0
+ .byte 0
+ .uleb128 0x9 /* (abbrev code) */
+ .uleb128 0x34 /* (TAG: DW_TAG_variable) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x1c /* (DW_AT_const_value) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .byte 0
+ .byte 0
+ .uleb128 0xa /* (abbrev code) */
+ .uleb128 0x5 /* (TAG: DW_TAG_formal_parameter) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x1c /* (DW_AT_const_value) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .byte 0
+ .byte 0
+ .uleb128 0xb /* (abbrev code) */
+ .uleb128 0x2e /* (TAG: DW_TAG_subprogram) */
+ .byte 0x1 /* DW_children_yes */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x11 /* (DW_AT_low_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x12 /* (DW_AT_high_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x40 /* (DW_AT_frame_base) */
+ .uleb128 0x6 /* (DW_FORM_data4) */
+ .uleb128 0x2117 /* (DW_AT_GNU_all_call_sites) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x1 /* (DW_AT_sibling) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0xc /* (abbrev code) */
+ .uleb128 0x4109 /* (TAG: DW_TAG_GNU_call_site) */
+ .byte 0x1 /* DW_children_yes */
+ .uleb128 0x11 /* (DW_AT_low_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x1 /* (DW_AT_sibling) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0xd /* (abbrev code) */
+ .uleb128 0x410a /* (TAG: DW_TAG_GNU_call_site_parameter) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x2 /* (DW_AT_location) */
+ .uleb128 0xa /* (DW_FORM_block1) */
+ .uleb128 0x2111 /* (DW_AT_GNU_call_site_value) */
+ .uleb128 0xa /* (DW_FORM_block1) */
+ .byte 0
+ .byte 0
+ .uleb128 0xe /* (abbrev code) */
+ .uleb128 0x410a /* (TAG: DW_TAG_GNU_call_site_parameter) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x2111 /* (DW_AT_GNU_call_site_value) */
+ .uleb128 0xa /* (DW_FORM_block1) */
+ .byte 0
+ .byte 0
+ .uleb128 0xf /* (abbrev code) */
+ .uleb128 0x4109 /* (TAG: DW_TAG_GNU_call_site) */
+ .byte 0x1 /* DW_children_yes */
+ .uleb128 0x11 /* (DW_AT_low_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0x10 /* (abbrev code) */
+ .uleb128 0x2e /* (TAG: DW_TAG_subprogram) */
+ .byte 0x1 /* DW_children_yes */
+ .uleb128 0x3f /* (DW_AT_external) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0xe /* (DW_FORM_strp) */
+ .uleb128 0x3a /* (DW_AT_decl_file) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3b /* (DW_AT_decl_line) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x27 /* (DW_AT_prototyped) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x49 /* (DW_AT_type) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x11 /* (DW_AT_low_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x12 /* (DW_AT_high_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x40 /* (DW_AT_frame_base) */
+ .uleb128 0xa /* (DW_FORM_block1) */
+ .uleb128 0x2117 /* (DW_AT_GNU_all_call_sites) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x1 /* (DW_AT_sibling) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0x11 /* (abbrev code) */
+ .uleb128 0x4109 /* (TAG: DW_TAG_GNU_call_site) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x11 /* (DW_AT_low_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x2115 /* (DW_AT_GNU_tail_call) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x31 /* (DW_AT_abstract_origin) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .uleb128 0x12 /* (abbrev code) */
+ .uleb128 0x34 /* (TAG: DW_TAG_variable) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0x8 /* (DW_FORM_string) */
+ .uleb128 0x3a /* (DW_AT_decl_file) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3b /* (DW_AT_decl_line) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x49 /* (DW_AT_type) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .uleb128 0x3f /* (DW_AT_external) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x2 /* (DW_AT_location) */
+ .uleb128 0xa /* (DW_FORM_block1) */
+ .byte 0
+ .byte 0
+ .uleb128 0x13 /* (abbrev code) */
+ .uleb128 0x35 /* (TAG: DW_TAG_volatile_type) */
+ .byte 0 /* DW_children_no */
+ .uleb128 0x49 /* (DW_AT_type) */
+ .uleb128 0x13 /* (DW_FORM_ref4) */
+ .byte 0
+ .byte 0
+ .byte 0
+ .section .debug_loc,"",@progbits
+.Ldebug_loc0:
+.LLST0:
+ .quad .LFB5 /* Location list begin address (*.LLST0) */
+ .quad .LCFI0 /* Location list end address (*.LLST0) */
+ .2byte 0x2 /* Location expression size */
+ .byte 0x77 /* DW_OP_breg7 */
+ .sleb128 8
+ .quad .LCFI0 /* Location list begin address (*.LLST0) */
+ .quad .LCFI1 /* Location list end address (*.LLST0) */
+ .2byte 0x2 /* Location expression size */
+ .byte 0x77 /* DW_OP_breg7 */
+ .sleb128 16
+ .quad .LCFI1 /* Location list begin address (*.LLST0) */
+ .quad .LFE5 /* Location list end address (*.LLST0) */
+ .2byte 0x2 /* Location expression size */
+ .byte 0x77 /* DW_OP_breg7 */
+ .sleb128 8
+ .quad 0 /* Location list terminator begin (*.LLST0) */
+ .quad 0 /* Location list terminator end (*.LLST0) */
+ .section .debug_aranges,"",@progbits
+ .4byte 0x3c /* Length of Address Ranges Info */
+ .2byte 0x2 /* DWARF Version */
+ .4byte .Ldebug_info0 /* Offset of Compilation Unit Info */
+ .byte 0x8 /* Size of Address */
+ .byte 0 /* Size of Segment Descriptor */
+ .2byte 0 /* Pad to 16 byte boundary */
+ .2byte 0
+ .quad .Ltext0 /* Address */
+ .quad .Letext0-.Ltext0 /* Length */
+ .quad .LFB2 /* Address */
+ .quad .LFE2-.LFB2 /* Length */
+ .quad 0
+ .quad 0
+ .section .debug_ranges,"",@progbits
+.Ldebug_ranges0:
+ .quad .Ltext0 /* Offset 0 */
+ .quad .Letext0
+ .quad .LFB2 /* Offset 0x10 */
+ .quad .LFE2
+ .quad 0
+ .quad 0
+ .section .debug_line,"",@progbits
+.Ldebug_line0:
+ .section .debug_str,"MS",@progbits,1
+.LASF1:
+ .string "gdb.arch/amd64-entry-value-param.c"
+.LASF3:
+ .string "main"
+.LASF2:
+ .string ""
+.LASF0:
+ .string "GNU C 4.7.1 20120612 (prerelease)"
+ .ident "GCC: (GNU) 4.7.1 20120612 (prerelease)"
+ .section .note.GNU-stack,"",@progbits
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-entry-value-param.c
@@ -0,0 +1,40 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2012 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+volatile int vv;
+
+static __attribute__((noinline)) int
+foo (int x, int y, int z)
+{
+ int a = x * 2;
+ int b = y * 2;
+ int c = z * 2;
+ vv++; /* break-here */
+ return x + z;
+}
+
+static __attribute__((noinline)) int
+bar (int x)
+{
+ return foo (x, 2, 3) + foo (x, 4, 3) + foo (x + 6, x, 3) + x;
+}
+
+int
+main (void)
+{
+ return bar (10);
+}
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-entry-value-param.exp
@@ -0,0 +1,51 @@
+# Copyright (C) 2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+set testfile amd64-entry-value-param
+set srcfile ${testfile}.S
+set csrcfile ${testfile}.c
+set opts {}
+
+if [info exists COMPILE] {
+ # make check RUNTESTFLAGS="gdb.arch/amd64-entry-value-param.exp COMPILE=1"
+ set srcfile ${csrcfile}
+ lappend opts debug optimize=-O2
+} elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
+ verbose "Skipping amd64-entry-value-param."
+ return
+}
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} $opts] } {
+ return -1
+}
+
+if ![runto_main] {
+ return -1
+}
+
+set srcfile $csrcfile
+gdb_breakpoint [gdb_get_line_number "break-here"]
+
+gdb_continue_to_breakpoint "break-here" ".* break-here .*"
+gdb_test "p y" " = 2"
+gdb_test "p b" " = 4"
+
+gdb_continue_to_breakpoint "break-here" ".* break-here .*"
+gdb_test "p y" " = 4"
+gdb_test "p b" " = 8"
+
+gdb_continue_to_breakpoint "break-here" ".* break-here .*"
+gdb_test "p y" " = 10"
+gdb_test "p b" " = 20"

11
gdb.spec
View File

@ -35,7 +35,7 @@ Version: 7.4.50.%{snap}
# The release always contains a leading reserved number, start it at 1.
# `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
Release: 3%{?dist}
Release: 4%{?dist}
License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and BSD and Public Domain
Group: Development/Debuggers
@ -567,6 +567,10 @@ Patch694: gdb-disable-mcheck.patch
# Fix assertion on some files as glibc-2.15.90-8.fc18 (Doug Evans).
Patch695: gdb-index-assert.patch
# Support DW_OP_GNU_parameter_ref for -O2 -g inferiors (BZ 827375).
Patch696: gdb-parameterref-1of2.patch
Patch697: gdb-parameterref-2of2.patch
%if 0%{!?rhel:1} || 0%{?rhel} > 6
# RL_STATE_FEDORA_GDB would not be found for:
# Patch642: gdb-readline62-ask-more-rh.patch
@ -855,6 +859,8 @@ rm -f gdb/jv-exp.c gdb/m2-exp.c gdb/objc-exp.c gdb/p-exp.c
%patch693 -p1
%patch694 -p1
%patch695 -p1
%patch696 -p1
%patch697 -p1
%patch393 -p1
%if 0%{!?el5:1} || 0%{?scl:1}
@ -1344,6 +1350,9 @@ fi
%endif # 0%{!?el5:1} || "%{_target_cpu}" == "noarch"
%changelog
* Thu Jun 14 2012 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.4.50.20120603-4.fc18
- Support DW_OP_GNU_parameter_ref for -O2 -g inferiors (BZ 827375).
* Wed Jun 6 2012 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.4.50.20120603-3.fc18
- Disable -lmcheck in the development builds.
- Fix assertion on some files as glibc-2.15.90-8.fc18 (Doug Evans).