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Re: [PATCH mainline/7.12.1] Create tdep->rl78_psw_type lazily
- From: Yao Qi <qiyaoltc at gmail dot com>
- To: gdb-patches at sourceware dot org
- Date: Fri, 9 Dec 2016 16:05:43 +0000
- Subject: Re: [PATCH mainline/7.12.1] Create tdep->rl78_psw_type lazily
- Authentication-results: sourceware.org; auth=none
- References: <1481287961-10631-1-git-send-email-yao.qi@linaro.org>
On 16-12-09 12:52:41, Yao Qi wrote:
> gdb:
>
> 2016-12-09 Yao Qi <yao.qi@linaro.org>
>
> PR tdep/20953
> * rl78-tdep.c (rl78_psw_type): New function.
> (rl78_register_type): Call rl78_psw_type.
> (rl78_gdbarch_init): Move code to rl78_psw_type.
Patch is pushed into 7.12 branch. Patch is updated for
gdb.base/all-architectures.exp.in, and pushed into master
as below.
--
Yao (齐尧)
>From 1a31b34a18d61dee55042f2ab23c8fa9203fe6ef Mon Sep 17 00:00:00 2001
From: Yao Qi <yao.qi@linaro.org>
Date: Fri, 9 Dec 2016 15:27:43 +0000
Subject: [PATCH] Create tdep->rl78_psw_type lazily
I build GDB for all targets enabled. When I "set architecture rl78",
GDB crashes,
(gdb) set architecture rl78
Program received signal SIGSEGV, Segmentation fault.
append_flags_type_flag (type=0x20cc0e0, bitpos=bitpos@entry=0, name=name@entry=0x11dba3f "CY") at ../../binutils-gdb/gdb/gdbtypes.c:4926
4926 name);
(gdb) bt 10
#0 append_flags_type_flag (type=0x20cc0e0, bitpos=bitpos@entry=0, name=name@entry=0x11dba3f "CY") at ../../binutils-gdb/gdb/gdbtypes.c:4926
#1 0x00000000004aaca8 in rl78_gdbarch_init (info=..., arches=<optimized out>) at ../../binutils-gdb/gdb/rl78-tdep.c:1410
#2 0x00000000006b05a4 in gdbarch_find_by_info (info=...) at ../../binutils-gdb/gdb/gdbarch.c:5269
#3 0x000000000060eee4 in gdbarch_update_p (info=...) at ../../binutils-gdb/gdb/arch-utils.c:557
#4 0x000000000060f8a8 in set_architecture (ignore_args=<optimized out>, from_tty=1, c=<optimized out>) at ../../binutils-gdb/gdb/arch-utils.c:531
#5 0x0000000000593d0b in do_set_command (arg=<optimized out>, arg@entry=0x20be851 "rl78", from_tty=from_tty@entry=1, c=c@entry=0x20b1540)
at ../../binutils-gdb/gdb/cli/cli-setshow.c:455
#6 0x00000000007665c3 in execute_command (p=<optimized out>, p@entry=0x20be840 "set architecture rl78", from_tty=1) at ../../binutils-gdb/gdb/top.c:666
#7 0x00000000006935f4 in command_handler (command=0x20be840 "set architecture rl78") at ../../binutils-gdb/gdb/event-top.c:577
#8 0x00000000006938d8 in command_line_handler (rl=<optimized out>) at ../../binutils-gdb/gdb/event-top.c:767
#9 0x0000000000692c2c in gdb_rl_callback_handler (rl=0x20be890 "") at ../../binutils-gdb/gdb/event-top.c:200
The cause is that we want to access some builtin types in gdbarch init, but
it is not initialized yet. I fix it by creating the type when it is to be
used. We've already done this in sparc, sparc64 and m68k.
gdb:
2016-12-09 Yao Qi <yao.qi@linaro.org>
PR tdep/20953
* rl78-tdep.c (rl78_psw_type): New function.
(rl78_register_type): Call rl78_psw_type.
(rl78_gdbarch_init): Move code to rl78_psw_type.
gdb/testsuite:
2016-12-09 Yao Qi <yao.qi@linaro.org>
* gdb.base/all-architectures.exp.in: Remove kfail for rl78.
diff --git a/gdb/rl78-tdep.c b/gdb/rl78-tdep.c
index 95a26a5..0e88fbc 100644
--- a/gdb/rl78-tdep.c
+++ b/gdb/rl78-tdep.c
@@ -261,6 +261,30 @@ struct rl78_prologue
int reg_offset[RL78_NUM_TOTAL_REGS];
};
+/* Construct type for PSW register. */
+
+static struct type *
+rl78_psw_type (struct gdbarch *gdbarch)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ if (tdep->rl78_psw_type == NULL)
+ {
+ tdep->rl78_psw_type = arch_flags_type (gdbarch,
+ "builtin_type_rl78_psw", 1);
+ append_flags_type_flag (tdep->rl78_psw_type, 0, "CY");
+ append_flags_type_flag (tdep->rl78_psw_type, 1, "ISP0");
+ append_flags_type_flag (tdep->rl78_psw_type, 2, "ISP1");
+ append_flags_type_flag (tdep->rl78_psw_type, 3, "RBS0");
+ append_flags_type_flag (tdep->rl78_psw_type, 4, "AC");
+ append_flags_type_flag (tdep->rl78_psw_type, 5, "RBS1");
+ append_flags_type_flag (tdep->rl78_psw_type, 6, "Z");
+ append_flags_type_flag (tdep->rl78_psw_type, 7, "IE");
+ }
+
+ return tdep->rl78_psw_type;
+}
+
/* Implement the "register_type" gdbarch method. */
static struct type *
@@ -273,7 +297,7 @@ rl78_register_type (struct gdbarch *gdbarch, int reg_nr)
else if (reg_nr == RL78_RAW_PC_REGNUM)
return tdep->rl78_uint32;
else if (reg_nr == RL78_PSW_REGNUM)
- return (tdep->rl78_psw_type);
+ return rl78_psw_type (gdbarch);
else if (reg_nr <= RL78_MEM_REGNUM
|| (RL78_X_REGNUM <= reg_nr && reg_nr <= RL78_H_REGNUM)
|| (RL78_BANK0_R0_REGNUM <= reg_nr
@@ -1406,16 +1430,6 @@ rl78_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep->rl78_code_pointer
= arch_pointer_type (gdbarch, 32, "rl78_code_addr_t", tdep->rl78_void);
- tdep->rl78_psw_type = arch_flags_type (gdbarch, "builtin_type_rl78_psw", 1);
- append_flags_type_flag (tdep->rl78_psw_type, 0, "CY");
- append_flags_type_flag (tdep->rl78_psw_type, 1, "ISP0");
- append_flags_type_flag (tdep->rl78_psw_type, 2, "ISP1");
- append_flags_type_flag (tdep->rl78_psw_type, 3, "RBS0");
- append_flags_type_flag (tdep->rl78_psw_type, 4, "AC");
- append_flags_type_flag (tdep->rl78_psw_type, 5, "RBS1");
- append_flags_type_flag (tdep->rl78_psw_type, 6, "Z");
- append_flags_type_flag (tdep->rl78_psw_type, 7, "IE");
-
/* Registers. */
set_gdbarch_num_regs (gdbarch, RL78_NUM_REGS);
set_gdbarch_num_pseudo_regs (gdbarch, RL78_NUM_PSEUDO_REGS);
diff --git a/gdb/testsuite/gdb.base/all-architectures.exp.in b/gdb/testsuite/gdb.base/all-architectures.exp.in
index 4a8099c..94bee2e 100644
--- a/gdb/testsuite/gdb.base/all-architectures.exp.in
+++ b/gdb/testsuite/gdb.base/all-architectures.exp.in
@@ -209,12 +209,6 @@ with_test_prefix "tests" {
continue
}
- if {$arch == "rl78"} {
- if {$want_tests_messages} {
- kfail "set architecture rl78" "gdb/20953"
- }
- continue
- }
if {$arch == "rx"} {
if {$want_tests_messages} {
kfail "set architecture rx" "gdb/20954"