[Buildroot] [PATCH 1/3] package/gdb: add support for gdb 10.x

* [Buildroot] [PATCH 1/3] package/gdb: add support for gdb 10.x
@ 2020-12-28 20:10 Thomas Petazzoni
  2020-12-28 20:10 ` [Buildroot] [PATCH 2/3] package/gdb: make gdb 9.2 the default version Thomas Petazzoni
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Thomas Petazzoni @ 2020-12-28 20:10 UTC (permalink / raw)
  To: buildroot

All patches from gdb 9.2 are kept, except
0006-sim-ppc-Fix-linker-error-with-fno-common.patch which is
upstream. The other patches are rebased to accommodate some code
re-organization in gdb 10.x, especially the move of the gdbserver code
from gdb/gdbserver/ to gdbserver/.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
 ...e-pt_regs-uapi_pt_regs-on-GLIBC-syst.patch | 55 ++++++++++++++++
 ...-pt_-dsp-regs-uapi_pt_-dsp-regs-on-G.patch | 43 +++++++++++++
 package/gdb/10.1/0003-use-asm-sgidefs.h.patch | 40 ++++++++++++
 .../0004-gdbserver-fix-build-for-m68k.patch   | 63 +++++++++++++++++++
 ...fork-inferior-include-linux-ptrace.h.patch | 53 ++++++++++++++++
 package/gdb/Config.in.host                    |  4 ++
 package/gdb/gdb.hash                          |  1 +
 package/gdb/gdb.mk                            |  6 ++
 8 files changed, 265 insertions(+)
 create mode 100644 package/gdb/10.1/0001-ppc-ptrace-Define-pt_regs-uapi_pt_regs-on-GLIBC-syst.patch
 create mode 100644 package/gdb/10.1/0002-sh-ptrace-Define-pt_-dsp-regs-uapi_pt_-dsp-regs-on-G.patch
 create mode 100644 package/gdb/10.1/0003-use-asm-sgidefs.h.patch
 create mode 100644 package/gdb/10.1/0004-gdbserver-fix-build-for-m68k.patch
 create mode 100644 package/gdb/10.1/0005-nat-fork-inferior-include-linux-ptrace.h.patch

diff --git a/package/gdb/10.1/0001-ppc-ptrace-Define-pt_regs-uapi_pt_regs-on-GLIBC-syst.patch b/package/gdb/10.1/0001-ppc-ptrace-Define-pt_regs-uapi_pt_regs-on-GLIBC-syst.patch
new file mode 100644
index 0000000000..9369a14d2c
--- /dev/null
+++ b/package/gdb/10.1/0001-ppc-ptrace-Define-pt_regs-uapi_pt_regs-on-GLIBC-syst.patch
@@ -0,0 +1,55 @@
+From 64b8ab56118d2fea027adfb7ebbc01668b29528e Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 6 Aug 2016 17:32:50 -0700
+Subject: [PATCH] ppc/ptrace: Define pt_regs uapi_pt_regs on !GLIBC systems
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+[Rebase on gdb 8.3]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ gdb/nat/ppc-linux.h        | 6 ++++++
+ gdbserver/linux-ppc-low.cc | 6 ++++++
+ 2 files changed, 12 insertions(+)
+
+diff --git a/gdb/nat/ppc-linux.h b/gdb/nat/ppc-linux.h
+index d937a65b69c..1fd54b4a0e0 100644
+--- a/gdb/nat/ppc-linux.h
++++ b/gdb/nat/ppc-linux.h
+@@ -18,7 +18,13 @@
+ #ifndef NAT_PPC_LINUX_H
+ #define NAT_PPC_LINUX_H
+ 
++#if !defined(__GLIBC__)
++# define pt_regs uapi_pt_regs
++#endif
+ #include <asm/ptrace.h>
++#if !defined(__GLIBC__)
++# undef pt_regs
++#endif
+ #include <asm/cputable.h>
+ 
+ /* This sometimes isn't defined.  */
+diff --git a/gdbserver/linux-ppc-low.cc b/gdbserver/linux-ppc-low.cc
+index 337d555aee7..5d518f37268 100644
+--- a/gdbserver/linux-ppc-low.cc
++++ b/gdbserver/linux-ppc-low.cc
+@@ -23,7 +23,13 @@
+ #include "elf/common.h"
+ #include <sys/uio.h>
+ #include <elf.h>
++#if !defined(__GLIBC__)
++# define pt_regs uapi_pt_regs
++#endif
+ #include <asm/ptrace.h>
++#if !defined(__GLIBC__)
++# undef pt_regs
++#endif
+ 
+ #include "arch/ppc-linux-common.h"
+ #include "arch/ppc-linux-tdesc.h"
+-- 
+2.29.2
+
diff --git a/package/gdb/10.1/0002-sh-ptrace-Define-pt_-dsp-regs-uapi_pt_-dsp-regs-on-G.patch b/package/gdb/10.1/0002-sh-ptrace-Define-pt_-dsp-regs-uapi_pt_-dsp-regs-on-G.patch
new file mode 100644
index 0000000000..2f96d29820
--- /dev/null
+++ b/package/gdb/10.1/0002-sh-ptrace-Define-pt_-dsp-regs-uapi_pt_-dsp-regs-on-G.patch
@@ -0,0 +1,43 @@
+From d205f398e1e36f9673f50f368a3f29fd1dfaa794 Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Date: Sat, 3 Jun 2017 21:23:52 +0200
+Subject: [PATCH] sh/ptrace: Define pt_{dsp,}regs uapi_pt_{dsp,}regs on !GLIBC
+ systems
+
+Fixes a pt_{dsp,}regs redefinition when building with the musl C library
+on SuperH.
+
+Inspired by
+http://git.yoctoproject.org/clean/cgit.cgi/poky/plain/meta/recipes-devtools/gdb/gdb/0004-ppc-ptrace-Define-pt_regs-uapi_pt_regs-on-GLIBC-syst.patch,
+adapted for SuperH.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+[Rebase	on gdb 8.0]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ gdbserver/linux-sh-low.cc | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/gdbserver/linux-sh-low.cc b/gdbserver/linux-sh-low.cc
+index a6d3fc60047..b83cce6b9fe 100644
+--- a/gdbserver/linux-sh-low.cc
++++ b/gdbserver/linux-sh-low.cc
+@@ -76,7 +76,15 @@ extern const struct target_desc *tdesc_sh;
+ #include <sys/reg.h>
+ #endif
+ 
++#if !defined(__GLIBC__)
++# define pt_regs uapi_pt_regs
++# define pt_dspregs uapi_pt_dspregs
++#endif
+ #include <asm/ptrace.h>
++#if !defined(__GLIBC__)
++# undef pt_regs
++# undef pt_dspregs
++#endif
+ 
+ #define sh_num_regs 41
+ 
+-- 
+2.29.2
+
diff --git a/package/gdb/10.1/0003-use-asm-sgidefs.h.patch b/package/gdb/10.1/0003-use-asm-sgidefs.h.patch
new file mode 100644
index 0000000000..e04ebd1dd5
--- /dev/null
+++ b/package/gdb/10.1/0003-use-asm-sgidefs.h.patch
@@ -0,0 +1,40 @@
+From 65acc8800dba7e10da882871d4648241805c47ce Mon Sep 17 00:00:00 2001
+From: Andre McCurdy <amccurdy@gmail.com>
+Date: Sat, 30 Apr 2016 15:29:06 -0700
+Subject: [PATCH] use <asm/sgidefs.h>
+
+Build fix for MIPS with musl libc
+
+The MIPS specific header <sgidefs.h> is provided by glibc and uclibc
+but not by musl. Regardless of the libc, the kernel headers provide
+<asm/sgidefs.h> which provides the same definitions, so use that
+instead.
+
+Upstream-Status: Pending
+
+[Vincent:
+Taken from: https://sourceware.org/bugzilla/show_bug.cgi?id=21070]
+
+Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
+---
+ gdb/mips-linux-nat.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/gdb/mips-linux-nat.c b/gdb/mips-linux-nat.c
+index 38ff461a35b..b6cf194b2bf 100644
+--- a/gdb/mips-linux-nat.c
++++ b/gdb/mips-linux-nat.c
+@@ -31,7 +31,7 @@
+ #include "gdb_proc_service.h"
+ #include "gregset.h"
+ 
+-#include <sgidefs.h>
++#include <asm/sgidefs.h>
+ #include "nat/gdb_ptrace.h"
+ #include <asm/ptrace.h>
+ #include "inf-ptrace.h"
+-- 
+2.29.2
+
diff --git a/package/gdb/10.1/0004-gdbserver-fix-build-for-m68k.patch b/package/gdb/10.1/0004-gdbserver-fix-build-for-m68k.patch
new file mode 100644
index 0000000000..846f7ed293
--- /dev/null
+++ b/package/gdb/10.1/0004-gdbserver-fix-build-for-m68k.patch
@@ -0,0 +1,63 @@
+From 90ebe548922538b854de52e8b687384f44360984 Mon Sep 17 00:00:00 2001
+From: Romain Naour <romain.naour@gmail.com>
+Date: Fri, 22 Jun 2018 22:40:26 +0200
+Subject: [PATCH] gdbserver: fix build for m68k
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+As for strace [1], when <sys/reg.h> is included after <linux/ptrace.h>,
+the build fails on m68k with the following diagnostics:
+
+In file included from ./../nat/linux-ptrace.h:28:0,
+                 from linux-low.h:27,
+                 from linux-m68k-low.c:20:
+[...]/usr/include/sys/reg.h:26:3: error: expected identifier before numeric constant
+   PT_D1 = 0,
+   ^
+[...]usr/include/sys/reg.h:26:3: error: expected ??}?? before numeric constant
+[...]usr/include/sys/reg.h:26:3: error: expected unqualified-id before numeric constant
+In file included from linux-m68k-low.c:27:0:
+[...]usr/include/sys/reg.h:99:1: error: expected declaration before ??}?? token
+ };
+ ^
+
+Fix this by moving <sys/reg.h> on top of "linux-low.h".
+
+[1] https://github.com/strace/strace/commit/6ebf6c4f9e5ebca123a5b5f24afe67cf0473cf92
+
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ gdbserver/linux-m68k-low.cc | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
+
+diff --git a/gdbserver/linux-m68k-low.cc b/gdbserver/linux-m68k-low.cc
+index 838ba353b0b..36679682b9a 100644
+--- a/gdbserver/linux-m68k-low.cc
++++ b/gdbserver/linux-m68k-low.cc
+@@ -17,6 +17,11 @@
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+ 
+ #include "server.h"
++
++#ifdef HAVE_SYS_REG_H
++#include <sys/reg.h>
++#endif
++
+ #include "linux-low.h"
+ 
+ /* Linux target op definitions for the m68k architecture.  */
+@@ -80,10 +85,6 @@ m68k_target::low_decr_pc_after_break ()
+ void init_registers_m68k (void);
+ extern const struct target_desc *tdesc_m68k;
+ 
+-#ifdef HAVE_SYS_REG_H
+-#include <sys/reg.h>
+-#endif
+-
+ #define m68k_num_regs 29
+ #define m68k_num_gregs 18
+ 
+-- 
+2.29.2
+
diff --git a/package/gdb/10.1/0005-nat-fork-inferior-include-linux-ptrace.h.patch b/package/gdb/10.1/0005-nat-fork-inferior-include-linux-ptrace.h.patch
new file mode 100644
index 0000000000..33dce4d940
--- /dev/null
+++ b/package/gdb/10.1/0005-nat-fork-inferior-include-linux-ptrace.h.patch
@@ -0,0 +1,53 @@
+From c8454711eca2e79437e17ed1e1e68b48b4c8d927 Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+Date: Sun, 24 Jun 2018 23:33:55 +0200
+Subject: [PATCH] nat/fork-inferior: include linux-ptrace.h
+
+To decide whether fork() or vfork() should be used, fork-inferior.c
+uses the following test:
+
+  #if !(defined(__UCLIBC__) && defined(HAS_NOMMU))
+
+However, HAS_NOMMU is never defined, because it gets defined in
+linux-ptrace.h, which is not included by fork-inferior.c. Due to this,
+gdbserver fails to build on noMMU architectures. This commit fixes
+that by simply including linux-ptrace.h.
+
+This bug was introduced by commit
+2090129c36c7e582943b7d300968d19b46160d84 ("Share fork_inferior et al
+with gdbserver"). Indeed, the same fork()/vfork() selection was done,
+but in another file where linux-ptrace.h was included.
+
+Fixes the following build issue:
+
+../nat/fork-inferior.c: In function 'pid_t fork_inferior(const char*, const string&, char**, void (*)(), void (*)(int), void (*)(), const char*, void (*)(const char*, char* const*, char* const*))':
+../nat/fork-inferior.c:376:11: error: 'fork' was not declared in this scope
+     pid = fork ();
+           ^~~~
+../nat/fork-inferior.c:376:11: note: suggested alternative: 'vfork'
+     pid = fork ();
+           ^~~~
+           vfork
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+[Romain: rebase on gdb 8.3]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ gdb/nat/fork-inferior.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/gdb/nat/fork-inferior.c b/gdb/nat/fork-inferior.c
+index 7ba0126871d..53e1ec72f09 100644
+--- a/gdb/nat/fork-inferior.c
++++ b/gdb/nat/fork-inferior.c
+@@ -27,6 +27,7 @@
+ #include "gdbsupport/pathstuff.h"
+ #include "gdbsupport/signals-state-save-restore.h"
+ #include "gdbsupport/gdb_tilde_expand.h"
++#include "linux-ptrace.h"
+ #include <vector>
+ 
+ extern char **environ;
+-- 
+2.29.2
+
diff --git a/package/gdb/Config.in.host b/package/gdb/Config.in.host
index 4b868e2255..3abc4f7d23 100644
--- a/package/gdb/Config.in.host
+++ b/package/gdb/Config.in.host
@@ -78,6 +78,9 @@ config BR2_GDB_VERSION_8_3
 config BR2_GDB_VERSION_9_2
 	bool "gdb 9.2.x"
 
+config BR2_GDB_VERSION_10
+	bool "gdb 10.x"
+
 endchoice
 
 endif
@@ -90,4 +93,5 @@ config BR2_GDB_VERSION
 	default "8.2.1"    if BR2_GDB_VERSION_8_2 || !BR2_PACKAGE_HOST_GDB
 	default "8.3.1"    if BR2_GDB_VERSION_8_3
 	default "9.2"      if BR2_GDB_VERSION_9_2
+	default "10.1"	   if BR2_GDB_VERSION_10
 	depends on BR2_PACKAGE_GDB || BR2_PACKAGE_HOST_GDB
diff --git a/package/gdb/gdb.hash b/package/gdb/gdb.hash
index 1f14eeafaf..779ca141bc 100644
--- a/package/gdb/gdb.hash
+++ b/package/gdb/gdb.hash
@@ -2,6 +2,7 @@
 sha512  2aa81cfd389bb48c35d7d9f95cc10e88b4f7ad4597bdde0f8f1fd312f60f10d9fb2cc6e5a9355227d89ff328f7feb0fc411a69394560cafeb9fa75d35d896d11  gdb-8.2.1.tar.xz
 sha512  9053a2dc6b9eb921907afbc4cecc75d635aa76df5e8c4f0e5824ccf57cb206b299c19b127fff000b65c334826ff8304a54ff6098428365a8e997cca886c39e9a  gdb-8.3.1.tar.xz
 sha512  73635f00f343117aa5e2436f1e1597099e2bfb31ef7bb162b273fa1ea282c3fa9b0f52762e70bfc7ad0334addb8d159e9ac7cbe5998ca4f755ea8cf90714d274  gdb-9.2.tar.xz
+sha512  0dc54380435c6853db60f1e388b94836d294dfa9ad7f518385a27db4edd03cb970f8717d5f1e9c9a0d4a33d7fcf91bc2e5d6c9cf9e4b561dcc74e65b806c1537  gdb-10.1.tar.xz
 
 # Locally calculated (fetched from Github)
 sha512  5a2acf2fd33ab2ff589e1037ca40abda54328997dcff26b2b49b874bd3be980be5a63342962254f3c3bda98e32ce7a33af704d37353352833dee193135600458  gdb-arc-2020.09-release-gdb.tar.gz
diff --git a/package/gdb/gdb.mk b/package/gdb/gdb.mk
index f31b168bf1..c74279a43e 100644
--- a/package/gdb/gdb.mk
+++ b/package/gdb/gdb.mk
@@ -8,6 +8,12 @@ GDB_VERSION = $(call qstrip,$(BR2_GDB_VERSION))
 GDB_SITE = $(BR2_GNU_MIRROR)/gdb
 GDB_SOURCE = gdb-$(GDB_VERSION).tar.xz
 
+# recent gdb versions (>= 10) have gdbserver moved at the top-level,
+# which requires a different build logic.
+ifeq ($(BR2_GDB_VERSION_10),y)
+GDB_GDBSERVER_TOPLEVEL = y
+endif
+
 ifeq ($(BR2_arc),y)
 GDB_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,binutils-gdb,$(GDB_VERSION))
 GDB_SOURCE = gdb-$(GDB_VERSION).tar.gz
-- 
2.29.2

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