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[vla] Fix crash for dynamic.exp with gcc-gfortran-4.1.2-51.el5.x86_64. 

- Reintroduce RHEL-5 glibc workaround for bt-clone-stop.exp.
- testsuite: Update/fix rh634108-solib_address.exp for the upstreamed API.
This commit is contained in:
Jan Kratochvil 2012-03-02 23:16:12 +01:00
parent e05ce76998
commit fb7506558d
4 changed files with 369 additions and 6 deletions
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323
gdb-6.5-bz216711-clone-is-outermost.patch
View File

@ -23,8 +23,325 @@ instead.
Port to GDB-6.7.
Index: gdb-7.4.50.20120120/gdb/amd64-linux-tdep.c
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/amd64-linux-tdep.c 2012-03-02 22:15:48.000000000 +0100
+++ gdb-7.4.50.20120120/gdb/amd64-linux-tdep.c 2012-03-02 22:16:13.526569163 +0100
@@ -268,6 +268,80 @@ amd64_linux_register_reggroup_p (struct
/* Set the program counter for process PTID to PC. */
+/* Detect the outermost frame; during unwind of
+ #5 0x000000305cec68c3 in clone () from /lib64/tls/libc.so.6
+ avoid the additional bogus frame
+ #6 0x0000000000000000 in ??
+ We compare if the `linux_clone_code' block is _before_ unwound PC. */
+
+static const unsigned char linux_clone_code[] =
+{
+/* libc/sysdeps/unix/sysv/linux/x86_64/clone.S */
+/* #ifdef RESET_PID */
+/* ... */
+/* mov $SYS_ify(getpid), %eax */
+/* 0xb8, 0x27, 0x00, 0x00, 0x00 */
+/* OR */
+/* mov $SYS_ify(getpid), %rax */
+/* 0x48, 0xc7, 0xc0, 0x27, 0x00, 0x00, 0x00 */
+/* so just: */
+ 0x27, 0x00, 0x00, 0x00,
+/* syscall */
+ 0x0f, 0x05,
+/* movl %eax, %fs:PID */
+ 0x64, 0x89, 0x04, 0x25, 0x94, 0x00, 0x00, 0x00,
+/* movl %eax, %fs:TID */
+ 0x64, 0x89, 0x04, 0x25, 0x90, 0x00, 0x00, 0x00,
+/* #endif */
+/* |* Set up arguments for the function call. *| */
+/* popq %rax |* Function to call. *| */
+ 0x58,
+/* popq %rdi |* Argument. *| */
+ 0x5f,
+/* call *%rax$ */
+ 0xff, 0xd0
+};
+
+#define LINUX_CLONE_LEN (sizeof linux_clone_code)
+
+static int
+amd64_linux_clone_running (struct frame_info *this_frame)
+{
+ CORE_ADDR pc = get_frame_pc (this_frame);
+ unsigned char buf[LINUX_CLONE_LEN];
+
+ if (!safe_frame_unwind_memory (this_frame, pc - LINUX_CLONE_LEN, buf,
+ LINUX_CLONE_LEN))
+ return 0;
+
+ if (memcmp (buf, linux_clone_code, LINUX_CLONE_LEN) != 0)
+ return 0;
+
+ return 1;
+}
+
+static int
+amd64_linux_outermost_frame (struct frame_info *this_frame)
+{
+ CORE_ADDR pc = get_frame_pc (this_frame);
+ char *name;
+
+ find_pc_partial_function (pc, &name, NULL, NULL);
+
+ /* If we have NAME, we can optimize the search.
+ `clone' NAME still needs to have the code checked as its name may be
+ present in the user code.
+ `__clone' NAME should not be present in the user code but in the initial
+ parts of the `__clone' implementation the unwind still makes sense.
+ More detailed unwinding decision would be too much sensitive to possible
+ subtle changes in specific glibc revisions. */
+ if (name == NULL || strcmp (name, "clone") == 0
+ || strcmp ("__clone", name) == 0)
+ return (amd64_linux_clone_running (this_frame) != 0);
+
+ return 0;
+}
+
static void
amd64_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
{
@@ -1321,6 +1395,8 @@ amd64_linux_init_abi (struct gdbarch_inf
tdep->xsave_xcr0_offset = I386_LINUX_XSAVE_XCR0_OFFSET;
+ tdep->outermost_frame_p = amd64_linux_outermost_frame;
+
/* GNU/Linux uses SVR4-style shared libraries. */
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_lp64_fetch_link_map_offsets);
Index: gdb-7.4.50.20120120/gdb/amd64-tdep.c
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/amd64-tdep.c 2012-01-04 09:16:56.000000000 +0100
+++ gdb-7.4.50.20120120/gdb/amd64-tdep.c 2012-03-02 22:17:39.133287571 +0100
@@ -2108,6 +2108,7 @@ amd64_frame_unwind_stop_reason (struct f
{
struct amd64_frame_cache *cache =
amd64_frame_cache (this_frame, this_cache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame));
if (!cache->base_p)
return UNWIND_UNAVAILABLE;
@@ -2116,6 +2117,10 @@ amd64_frame_unwind_stop_reason (struct f
if (cache->base == 0)
return UNWIND_OUTERMOST;
+ /* Detect OS dependent outermost frames; such as `clone'. */
+ if (tdep->outermost_frame_p && tdep->outermost_frame_p (this_frame))
+ return UNWIND_OUTERMOST;
+
return UNWIND_NO_REASON;
}
@@ -2125,6 +2130,7 @@ amd64_frame_this_id (struct frame_info *
{
struct amd64_frame_cache *cache =
amd64_frame_cache (this_frame, this_cache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame));
if (!cache->base_p)
return;
@@ -2133,6 +2139,10 @@ amd64_frame_this_id (struct frame_info *
if (cache->base == 0)
return;
+ /* Detect OS dependent outermost frames; such as `clone'. */
+ if (tdep->outermost_frame_p && tdep->outermost_frame_p (this_frame))
+ return;
+
(*this_id) = frame_id_build (cache->base + 16, cache->pc);
}
Index: gdb-7.4.50.20120120/gdb/i386-tdep.c
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/i386-tdep.c 2012-03-02 22:15:48.000000000 +0100
+++ gdb-7.4.50.20120120/gdb/i386-tdep.c 2012-03-02 22:16:13.528569157 +0100
@@ -7613,6 +7613,9 @@ i386_gdbarch_init (struct gdbarch_info i
tdep->xsave_xcr0_offset = -1;
+ /* Unwinding stops on i386 automatically. */
+ tdep->outermost_frame_p = NULL;
+
tdep->record_regmap = i386_record_regmap;
set_gdbarch_long_long_align_bit (gdbarch, 32);
Index: gdb-7.4.50.20120120/gdb/i386-tdep.h
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/i386-tdep.h 2012-03-02 22:15:48.000000000 +0100
+++ gdb-7.4.50.20120120/gdb/i386-tdep.h 2012-03-02 22:16:13.529569154 +0100
@@ -219,6 +219,9 @@ struct gdbarch_tdep
int (*i386_sysenter_record) (struct regcache *regcache);
/* Parse syscall args. */
int (*i386_syscall_record) (struct regcache *regcache);
+
+ /* Detect OS dependent outermost frames; such as `clone'. */
+ int (*outermost_frame_p) (struct frame_info *this_frame);
};
/* Floating-point registers. */
Index: gdb-7.4.50.20120120/gdb/ia64-tdep.c
===================================================================
--- gdb-7.4.50.20120120.orig/gdb/ia64-tdep.c 2012-03-02 22:15:48.000000000 +0100
+++ gdb-7.4.50.20120120/gdb/ia64-tdep.c 2012-03-02 22:16:13.529569154 +0100
@@ -2181,6 +2181,138 @@ static const struct frame_unwind ia64_fr
default_frame_sniffer
};
+/* Detect the outermost frame; during unwind of
+ #6 0x2000000000347100 in __clone2 () from /lib/libc.so.6.1
+ avoid the additional bogus frame
+ #7 0x0000000000000000 in ?? () */
+
+static char linux_clone2_code[] =
+{
+/* libc/sysdeps/unix/sysv/linux/ia64/clone2.S */
+ 0x09, 0x00, 0x20, 0x12, 0x90, 0x11, 0x00, 0x40,
+ 0x28, 0x20, 0x23, 0x00, 0x00, 0x00, 0x04, 0x00,
+/* st4 [r9]=r8 */
+/* st4 [r10]=r8 */
+/* ;; */
+/* #endif */
+ 0x02, 0x50, 0x21, 0x40, 0x18, 0x14, 0x90, 0x02,
+ 0x90, 0x00, 0x42, 0x00, 0x00, 0x00, 0x04, 0x00,
+/* 1: ld8 out1=[in0],8 |* Retrieve code pointer. *| */
+/* mov out0=in4 |* Pass proper argument to fn *| */
+/* ;; */
+ 0x11, 0x08, 0x00, 0x40, 0x18, 0x10, 0x60, 0x50,
+ 0x05, 0x80, 0x03, 0x00, 0x68, 0x00, 0x80, 0x12,
+/* ld8 gp=[in0] |* Load function gp. *| */
+/* mov b6=out1 */
+/* br.call.dptk.many rp=b6 |* Call fn(arg) in the child *| */
+/* ;; */
+ 0x10, 0x48, 0x01, 0x10, 0x00, 0x21, 0x10, 0x00,
+ 0xa0, 0x00, 0x42, 0x00, 0x98, 0xdf, 0xf7, 0x5b,
+/* mov out0=r8 |* Argument to _exit *| */
+/* mov gp=loc0 */
+/* .globl HIDDEN_JUMPTARGET(_exit) */
+/* br.call.dpnt.many rp=HIDDEN_JUMPTARGET(_exit) */
+/* |* call _exit with result from fn. *| */
+ 0x11, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0x00, 0x02, 0x00, 0x80, 0x00, 0x00, 0x84, 0x00
+/* ret |* Not reached. *| */
+};
+
+#define LINUX_CLONE_PRE_SLOTS 3 /* Number of slots before PC. */
+#define LINUX_CLONE_LEN (sizeof linux_clone2_code)
+
+static int
+ia64_linux_clone2_running (struct frame_info *this_frame)
+{
+ CORE_ADDR pc = get_frame_pc (this_frame);
+ char buf[LINUX_CLONE_LEN];
+ struct minimal_symbol *minsym;
+ long long instr;
+
+ if (!safe_frame_unwind_memory (this_frame, pc - LINUX_CLONE_PRE_SLOTS * 16,
+ buf, LINUX_CLONE_LEN))
+ return 0;
+
+ if (memcmp (buf, linux_clone2_code, LINUX_CLONE_PRE_SLOTS * 16) != 0)
+ return 0;
+
+ /* Adjust the expected "_exit" address. */
+ minsym = lookup_minimal_symbol_text ("_exit", NULL);
+ if (minsym == NULL)
+ return 0;
+
+ instr = slotN_contents (&linux_clone2_code[LINUX_CLONE_PRE_SLOTS * 16], 2);
+ instr &= ~(((1L << 20) - 1) << 13);
+ /* Address is relative to the jump instruction slot, not the next one. */
+ instr |= (((SYMBOL_VALUE_ADDRESS (minsym) - (pc & ~0xfL)) >> 4)
+ & ((1L << 20) - 1)) << 13;
+ replace_slotN_contents (&linux_clone2_code[LINUX_CLONE_PRE_SLOTS * 16], instr,
+ 2);
+
+ if (memcmp (&buf[LINUX_CLONE_PRE_SLOTS * 16],
+ &linux_clone2_code[LINUX_CLONE_PRE_SLOTS * 16],
+ LINUX_CLONE_LEN - (LINUX_CLONE_PRE_SLOTS * 16)) != 0)
+ return 0;
+
+ return 1;
+}
+
+static int
+ia64_outermost_frame (struct frame_info *this_frame)
+{
+ CORE_ADDR pc = get_frame_pc (this_frame);
+ char *name;
+
+ find_pc_partial_function (pc, &name, NULL, NULL);
+
+ /* If we have NAME, we can optimize the search.
+ `clone' NAME still needs to have the code checked as its name may be
+ present in the user code.
+ `__clone' NAME should not be present in the user code but in the initial
+ parts of the `__clone' implementation the unwind still makes sense.
+ More detailed unwinding decision would be too much sensitive to possible
+ subtle changes in specific glibc revisions. */
+ if (name == NULL || strcmp (name, "clone2") == 0
+ || strcmp ("__clone2", name) == 0)
+ return (ia64_linux_clone2_running (this_frame) != 0);
+
+ return 0;
+}
+
+static void
+ia64_clone2_frame_this_id (struct frame_info *this_frame, void **this_cache,
+ struct frame_id *this_id)
+{
+ /* Leave the default outermost frame at *THIS_ID. */
+}
+
+static struct value *
+ia64_clone2_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
+{
+ return frame_unwind_got_register (this_frame, regnum, regnum);
+}
+
+static int
+ia64_clone2_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_prologue_cache)
+{
+ if (ia64_outermost_frame (this_frame))
+ return 1;
+
+ return 0;
+}
+
+static const struct frame_unwind ia64_clone2_frame_unwind =
+{
+ NORMAL_FRAME,
+ &ia64_clone2_frame_this_id,
+ &ia64_clone2_frame_prev_register,
+ NULL,
+ &ia64_clone2_frame_sniffer
+};
+
/* Signal trampolines. */
static void
@@ -4153,6 +4285,7 @@ ia64_gdbarch_init (struct gdbarch_info i
set_gdbarch_dummy_id (gdbarch, ia64_dummy_id);
set_gdbarch_unwind_pc (gdbarch, ia64_unwind_pc);
+ frame_unwind_append_unwinder (gdbarch, &ia64_clone2_frame_unwind);
#ifdef HAVE_LIBUNWIND_IA64_H
frame_unwind_append_unwinder (gdbarch,
&ia64_libunwind_sigtramp_frame_unwind);
Index: gdb-7.4.50.20120120/gdb/testsuite/gdb.threads/bt-clone-stop.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ gdb-6.8.50.20090802/gdb/testsuite/gdb.threads/bt-clone-stop.c 2009-08-03 15:50:08.000000000 +0200
+++ gdb-7.4.50.20120120/gdb/testsuite/gdb.threads/bt-clone-stop.c 2012-03-02 22:16:13.530569151 +0100
@@ -0,0 +1,39 @@
+/* This testcase is part of GDB, the GNU debugger.
+
@ -65,10 +382,10 @@ instead.
+ for (;;)
+ pause();
+}
Index: gdb-6.8.50.20090802/gdb/testsuite/gdb.threads/bt-clone-stop.exp
Index: gdb-7.4.50.20120120/gdb/testsuite/gdb.threads/bt-clone-stop.exp
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ gdb-6.8.50.20090802/gdb/testsuite/gdb.threads/bt-clone-stop.exp 2009-08-03 15:50:08.000000000 +0200
+++ gdb-7.4.50.20120120/gdb/testsuite/gdb.threads/bt-clone-stop.exp 2012-03-02 22:16:13.530569151 +0100
@@ -0,0 +1,61 @@
+# Copyright 2006 Free Software Foundation, Inc.
+

34
gdb-archer-vla-rhel5gcc.patch Normal file
View File

@ -0,0 +1,34 @@
commit a999ae2c722b366b94987941f0ce899f95e8d679
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Fri Mar 2 22:08:49 2012 +0100
Fix crash for gdb.fortran/dynamic.exp with gcc-gfortran-4.1.2-51.el5.x86_64.
--- a/gdb/valops.c
+++ b/gdb/valops.c
@@ -1037,7 +1037,8 @@ int
value_fetch_lazy (struct value *val)
{
gdb_assert (value_lazy (val));
- allocate_value_contents (val);
+ if (VALUE_LVAL (val) != lval_memory)
+ allocate_value_contents (val);
if (value_bitsize (val))
{
/* To read a lazy bitfield, read the entire enclosing value. This
@@ -1080,11 +1081,15 @@ value_fetch_lazy (struct value *val)
if (length)
{
+ /* Delay it after object_address_get_data above. */
+ allocate_value_contents (val);
addr += value_offset (val);
read_value_memory (val, 0, value_stack (val),
addr, value_contents_all_raw (val), length);
}
}
+ /* Just to be sure it has been called. */
+ allocate_value_contents (val);
}
else if (VALUE_LVAL (val) == lval_register)
{

4
gdb-bz634108-solib_address.patch
View File

@ -1,5 +1,7 @@
Fix gdb.solib_address (fix by Phil Muldoon).
s/solib_address/solib_name/ during upstreaming.
--- /dev/null
+++ b/gdb/testsuite/gdb.python/rh634108-solib_address.exp
@@ -0,0 +1,24 @@
@ -26,4 +28,4 @@ Fix gdb.solib_address (fix by Phil Muldoon).
+# Skip all tests if Python scripting is not enabled.
+if { [skip_python_tests] } { continue }
+
+gdb_test "python print gdb.solib_address(-1)" "None" "gdb.solib_address exists"
+gdb_test "python print gdb.solib_name(-1)" "None" "gdb.solib_name exists"

14
gdb.spec
View File

@ -33,7 +33,7 @@ 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: 23%{?dist}
Release: 24%{?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
@ -237,7 +237,7 @@ Patch208: gdb-6.5-BEA-testsuite.patch
Patch213: gdb-6.5-readline-long-line-crash-test.patch
# Fix bogus 0x0 unwind of the thread's topmost function clone(3) (BZ 216711).
#=fedoratest
#=push
Patch214: gdb-6.5-bz216711-clone-is-outermost.patch
# Test sideeffects of skipping ppc .so libs trampolines (BZ 218379).
@ -548,6 +548,10 @@ Patch645: gdb-prologue-not-skipped.patch
#=push
Patch646: gdb-exit-warning.patch
# [vla] Fix crash for dynamic.exp with gcc-gfortran-4.1.2-51.el5.x86_64.
#=push+work
Patch648: gdb-archer-vla-rhel5gcc.patch
%if 0%{!?rhel:1} || 0%{?rhel} > 6
# RL_STATE_FEDORA_GDB would not be found for:
# Patch642: gdb-readline62-ask-more-rh.patch
@ -811,6 +815,7 @@ rm -f gdb/jv-exp.c gdb/m2-exp.c gdb/objc-exp.c gdb/p-exp.c
%patch644 -p1
%patch645 -p1
%patch646 -p1
%patch648 -p1
%patch393 -p1
%if 0%{!?el5:1} || 0%{?scl:1}
@ -1248,6 +1253,11 @@ fi
%{_infodir}/gdb.info*
%changelog
* Fri Mar 2 2012 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.4.50.20120120-24.fc17
- [vla] Fix crash for dynamic.exp with gcc-gfortran-4.1.2-51.el5.x86_64.
- Reintroduce RHEL-5 glibc workaround for bt-clone-stop.exp.
- testsuite: Update/fix rh634108-solib_address.exp for the upstreamed API.
* Wed Feb 29 2012 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.4.50.20120120-23.fc17
- Add kernel vDSO workaround (`no loadable ...') on RHEL-5 (kernel BZ 765875).
- Fix skipping of prologues on RHEL-5 gcc-4.1 -O2 -g code (BZ 797889).