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[binutils-gdb] gdb: xtensa-linux: support THREADPTR register
- From: Max Filippov <jcmvbkbc at sourceware dot org>
- To: gdb-cvs at sourceware dot org
- Date: 27 Mar 2017 20:07:38 -0000
- Subject: [binutils-gdb] gdb: xtensa-linux: support THREADPTR register
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f74f865e5030057deb8a6a56af4a9e003d82cdcd
commit f74f865e5030057deb8a6a56af4a9e003d82cdcd
Author: Max Filippov <jcmvbkbc@gmail.com>
Date: Fri Nov 18 11:39:47 2016 -0800
gdb: xtensa-linux: support THREADPTR register
Make THREADPTR user register accessible.
gdb/
2017-03-27 Max Filippov <jcmvbkbc@gmail.com>
* xtensa-linux-nat.c (fill_gregset): Call regcache_raw_collect
for THREADPTR register.
(supply_gregset_reg): Call regcache_raw_supply for THREADPTR
register.
* xtensa-tdep.c (XTENSA_DBREGN_UREG): New definition.
(xtensa_derive_tdep): Initialize tdep->threadptr_regnum.
* xtensa-tdep.h (gdbarch_tdep::threadptr_regnum): New field.
Diff:
---
gdb/ChangeLog | 10 ++++++++++
gdb/xtensa-linux-nat.c | 8 ++++++++
gdb/xtensa-tdep.c | 4 ++++
gdb/xtensa-tdep.h | 1 +
4 files changed, 23 insertions(+)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2cebe10..25fde72 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,15 @@
2017-03-27 Max Filippov <jcmvbkbc@gmail.com>
+ * xtensa-linux-nat.c (fill_gregset): Call regcache_raw_collect
+ for THREADPTR register.
+ (supply_gregset_reg): Call regcache_raw_supply for THREADPTR
+ register.
+ * xtensa-tdep.c (XTENSA_DBREGN_UREG): New definition.
+ (xtensa_derive_tdep): Initialize tdep->threadptr_regnum.
+ * xtensa-tdep.h (gdbarch_tdep::threadptr_regnum): New field.
+
+2017-03-27 Max Filippov <jcmvbkbc@gmail.com>
+
* xtensa-tdep.c (xtensa_pseudo_register_read): Treat all
registers above gdbarch_num_regs (gdbarch) as privileged in
call0 ABI.
diff --git a/gdb/xtensa-linux-nat.c b/gdb/xtensa-linux-nat.c
index a4b001e..2781686 100644
--- a/gdb/xtensa-linux-nat.c
+++ b/gdb/xtensa-linux-nat.c
@@ -82,6 +82,10 @@ fill_gregset (const struct regcache *regcache,
regcache_raw_collect (regcache,
gdbarch_tdep (gdbarch)->sar_regnum,
®s->sar);
+ if (regnum == gdbarch_tdep (gdbarch)->threadptr_regnum || regnum == -1)
+ regcache_raw_collect (regcache,
+ gdbarch_tdep (gdbarch)->threadptr_regnum,
+ ®s->threadptr);
if (regnum >=gdbarch_tdep (gdbarch)->ar_base
&& regnum < gdbarch_tdep (gdbarch)->ar_base
+ gdbarch_tdep (gdbarch)->num_aregs)
@@ -148,6 +152,10 @@ supply_gregset_reg (struct regcache *regcache,
regcache_raw_supply (regcache,
gdbarch_tdep (gdbarch)->sar_regnum,
®s->sar);
+ if (regnum == gdbarch_tdep (gdbarch)->threadptr_regnum || regnum == -1)
+ regcache_raw_supply (regcache,
+ gdbarch_tdep (gdbarch)->threadptr_regnum,
+ ®s->threadptr);
if (regnum >=gdbarch_tdep (gdbarch)->ar_base
&& regnum < gdbarch_tdep (gdbarch)->ar_base
+ gdbarch_tdep (gdbarch)->num_aregs)
diff --git a/gdb/xtensa-tdep.c b/gdb/xtensa-tdep.c
index 2338ac1..13f1514 100644
--- a/gdb/xtensa-tdep.c
+++ b/gdb/xtensa-tdep.c
@@ -3107,6 +3107,8 @@ xtensa_derive_tdep (struct gdbarch_tdep *tdep)
/* Special registers 0..255 (core). */
#define XTENSA_DBREGN_SREG(n) (0x0200+(n))
+/* User registers 0..255. */
+#define XTENSA_DBREGN_UREG(n) (0x0300+(n))
for (rmap = tdep->regmap, n = 0; rmap->target_number != -1; n++, rmap++)
{
@@ -3138,6 +3140,8 @@ xtensa_derive_tdep (struct gdbarch_tdep *tdep)
tdep->litbase_regnum = n;
else if (rmap->target_number == XTENSA_DBREGN_SREG(230))
tdep->ps_regnum = n;
+ else if (rmap->target_number == XTENSA_DBREGN_UREG(231))
+ tdep->threadptr_regnum = n;
#if 0
else if (rmap->target_number == XTENSA_DBREGN_SREG(226))
tdep->interrupt_regnum = n;
diff --git a/gdb/xtensa-tdep.h b/gdb/xtensa-tdep.h
index 46aeecb..986aa68 100644
--- a/gdb/xtensa-tdep.h
+++ b/gdb/xtensa-tdep.h
@@ -204,6 +204,7 @@ struct gdbarch_tdep
int lcount_regnum;
int sar_regnum; /* Register number of SAR. */
int litbase_regnum; /* Register number of LITBASE. */
+ int threadptr_regnum; /* Register number of THREADPTR. */
int interrupt_regnum; /* Register number for interrupt. */
int interrupt2_regnum; /* Register number for interrupt2. */