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From: Andreas Arnez <arnez@linux.vnet.ibm.com>
To: gdb-patches@sourceware.org
Cc: Jeff Johnston <jjohnstn@redhat.com>
Subject: [PATCH v2 13/13] IA64 Linux: Define regset structures.
Date: Wed, 25 Jun 2014 16:49:00 -0000	[thread overview]
Message-ID: <1403714949-28133-14-git-send-email-arnez@linux.vnet.ibm.com> (raw)
In-Reply-To: <1403714949-28133-1-git-send-email-arnez@linux.vnet.ibm.com>

gdb/
	* ia64-linux-tdep.c: Include "regset.h".
	(ia64_linux_gregmap, ia64_linux_fpregmap): New register maps.
	(IA64_LINUX_GREGS_SIZE, IA64_LINUX_FPREGS_SIZE): New macros.
	(ia64_linux_supply_fpregset): New function.
	(ia64_linux_gregset, ia64_linux_fpregset): New regsets.
	(ia64_linux_regset_from_core_section): New function.
	(ia64_linux_init_abi): Set regset_from_core_section gdbarch
	method.
---
 gdb/ia64-linux-tdep.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)

diff --git a/gdb/ia64-linux-tdep.c b/gdb/ia64-linux-tdep.c
index 128924e..9989602 100644
--- a/gdb/ia64-linux-tdep.c
+++ b/gdb/ia64-linux-tdep.c
@@ -26,6 +26,7 @@
 #include "solib-svr4.h"
 #include "symtab.h"
 #include "linux-tdep.h"
+#include "regset.h"
 
 #include <ctype.h>
 
@@ -131,6 +132,88 @@ ia64_linux_stap_is_single_operand (struct gdbarch *gdbarch, const char *s)
 	  || isdigit (*s));  /* Literal number.  */
 }
 
+/* Core file support. */
+
+static const struct regcache_map_entry ia64_linux_gregmap[] =
+  {
+    { 32, IA64_GR0_REGNUM },	/* r0 ... r31 */
+    { 8, REGCACHE_MAP_SKIP_BYTES }, /* FIXME: NAT collection bits? */
+    { 1, IA64_PR_REGNUM },
+    { 8, IA64_BR0_REGNUM },	/* b0 ... b7 */
+    { 1, IA64_IP_REGNUM },
+    { 1, IA64_CFM_REGNUM },
+    { 1, IA64_PSR_REGNUM },
+    { 1, IA64_RSC_REGNUM },
+    { 1, IA64_BSP_REGNUM },
+    { 1, IA64_BSPSTORE_REGNUM },
+    { 1, IA64_RNAT_REGNUM },
+    { 1, IA64_CCV_REGNUM },
+    { 1, IA64_UNAT_REGNUM },
+    { 1, IA64_FPSR_REGNUM },
+    { 1, IA64_PFS_REGNUM },
+    { 1, IA64_LC_REGNUM },
+    { 1, IA64_EC_REGNUM },
+    { 0 }
+  };
+
+#define IA64_LINUX_GREGS_SIZE (55 * 8)
+
+static const struct regcache_map_entry ia64_linux_fpregmap[] =
+  {
+    { 128, IA64_FR0_REGNUM },	/* f0 ... f127 */
+    { 0 }
+  };
+
+#define IA64_LINUX_FPREGS_SIZE (128 * 8)
+
+static void
+ia64_linux_supply_fpregset (const struct regset *regset,
+			    struct regcache *regcache,
+			    int regnum, const void *regs, size_t len)
+{
+  const gdb_byte f_zero[16] = { 0 };
+  const gdb_byte f_one[16] =
+    { 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0xff, 0, 0, 0, 0, 0, 0 };
+
+  regcache_supply_regset (regset, regcache, regnum, regs, len);
+
+  /* Kernel generated cores have fr1==0 instead of 1.0.  Older GDBs
+     did the same.  So ignore whatever might be recorded in fpregset_t
+     for fr0/fr1 and always supply their expected values.  */
+  if (regnum == -1 || regnum == IA64_FR0_REGNUM)
+    regcache_raw_supply (regcache, IA64_FR0_REGNUM, f_zero);
+  if (regnum == -1 || regnum == IA64_FR1_REGNUM)
+    regcache_raw_supply (regcache, IA64_FR1_REGNUM, f_one);
+}
+
+static const struct regset ia64_linux_gregset =
+  {
+    ia64_linux_gregmap,
+    regcache_supply_regset, regcache_collect_regset
+  };
+
+static const struct regset ia64_linux_fpregset =
+  {
+    ia64_linux_fpregmap,
+    ia64_linux_supply_fpregset, regcache_collect_regset
+  };
+
+static const struct regset *
+ia64_linux_regset_from_core_section (struct gdbarch *gdbarch,
+				     const char *sect_name,
+				     size_t sect_size)
+{
+  if (strcmp (sect_name, ".reg") == 0
+      && sect_size >= IA64_LINUX_GREGS_SIZE)
+    return &ia64_linux_gregset;
+
+  if (strcmp (sect_name, ".reg2") == 0
+      && sect_size >= IA64_LINUX_FPREGS_SIZE)
+    return &ia64_linux_fpregset;
+
+  return NULL;
+}
+
 static void
 ia64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
@@ -161,6 +244,10 @@ ia64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   set_gdbarch_fetch_tls_load_module_address (gdbarch,
                                              svr4_fetch_objfile_link_map);
 
+  /* Core file support. */
+  set_gdbarch_regset_from_core_section (gdbarch,
+					ia64_linux_regset_from_core_section);
+
   /* SystemTap related.  */
   set_gdbarch_stap_register_prefixes (gdbarch, stap_register_prefixes);
   set_gdbarch_stap_register_indirection_prefixes (gdbarch,
-- 
1.8.4.2

  parent reply	other threads:[~2014-06-25 16:49 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-25 16:49 [PATCH v2 00/13] Regset rework preparations part 2 Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 05/13] ALPHA Linux: Fill 'collect_regset' in regset structures Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 04/13] AARCH64 " Andreas Arnez
2014-07-07  9:57   ` Omair Javaid
2014-06-25 16:49 ` [PATCH v2 02/13] regcache: Add functions suitable for regset_supply/collect Andreas Arnez
2014-07-07  9:32   ` Omair Javaid
2014-07-08 11:32     ` Andreas Arnez
2014-07-08 19:09       ` Omair Javaid
2014-07-10  7:54         ` Andreas Arnez
2014-07-19 13:10           ` Omair Javaid
2014-06-25 16:49 ` [PATCH v2 12/13] M68K Linux: Define regset structures Andreas Arnez
2014-07-15 12:13   ` Ulrich Weigand
2014-07-16 18:01     ` Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 01/13] Rename 'descr' field in regset structure to 'regmap' Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 07/13] HPPA Linux: Fill 'collect_regset' in regset structures Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 11/13] TILEGX Linux: Fill 'collect_regset' in regset structure Andreas Arnez
2014-07-15 10:12   ` Ulrich Weigand
2014-07-16 13:30     ` Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 03/13] S390: Migrate to regcache_supply/collect_regset Andreas Arnez
2014-07-15  9:27   ` Ulrich Weigand
2014-07-15 12:07     ` Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 06/13] FRV Linux: Fill 'collect_regset' in regset structures Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 10/13] SCORE: Fill 'collect_regset' in regset structure Andreas Arnez
2014-07-15 10:01   ` Ulrich Weigand
2014-07-15 12:25     ` Andreas Arnez
2014-06-25 16:49 ` Andreas Arnez [this message]
2014-07-15 13:01   ` [PATCH v2 13/13] IA64 Linux: Define regset structures Ulrich Weigand
2014-07-18  9:06     ` Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 09/13] NIOS2 Linux: Fill 'collect_regset' in regset structure Andreas Arnez
2014-06-25 16:49 ` [PATCH v2 08/13] M32R " Andreas Arnez
2014-07-01  8:00 ` [ping][PATCH v2 00/13] Regset rework preparations part 2 Andreas Arnez

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