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IA64 Linux: Define regset structures.

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This commit is contained in:
Andreas Arnez 2014-07-18 08:14:27 +00:00 • committed by Ulrich Weigand
parent 08f9f542cb
commit 070bdf0b1a
2 changed files with 101 additions and 0 deletions
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11
gdb/ChangeLog
View file

@ -1,3 +1,14 @@
2014-08-07 Andreas Arnez <arnez@linux.vnet.ibm.com>
* 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.
2014-08-07 Andreas Arnez <arnez@linux.vnet.ibm.com>
* m68klinux-tdep.c: Include "regset.h".

90
gdb/ia64-linux-tdep.c
View file

@ -26,6 +26,7 @@
#include "solib-svr4.h"
#include "symtab.h"
#include "linux-tdep.h"
#include "regset.h"
#include <ctype.h>
@ -131,6 +132,91 @@ 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, 8 }, /* r0 ... r31 */
{ 1, REGCACHE_MAP_SKIP, 8 }, /* FIXME: NAT collection bits? */
{ 1, IA64_PR_REGNUM, 8 },
{ 8, IA64_BR0_REGNUM, 8 }, /* b0 ... b7 */
{ 1, IA64_IP_REGNUM, 8 },
{ 1, IA64_CFM_REGNUM, 8 },
{ 1, IA64_PSR_REGNUM, 8 },
{ 1, IA64_RSC_REGNUM, 8 },
{ 1, IA64_BSP_REGNUM, 8 },
{ 1, IA64_BSPSTORE_REGNUM, 8 },
{ 1, IA64_RNAT_REGNUM, 8 },
{ 1, IA64_CCV_REGNUM, 8 },
{ 1, IA64_UNAT_REGNUM, 8 },
{ 1, IA64_FPSR_REGNUM, 8 },
{ 1, IA64_PFS_REGNUM, 8 },
{ 1, IA64_LC_REGNUM, 8 },
{ 1, IA64_EC_REGNUM, 8 },
{ 0 }
};
/* Size of 'gregset_t', as defined by the Linux kernel. Note that
this is more than actually mapped in the regmap above. */
#define IA64_LINUX_GREGS_SIZE (128 * 8)
static const struct regcache_map_entry ia64_linux_fpregmap[] =
{
{ 128, IA64_FR0_REGNUM, 16 }, /* f0 ... f127 */
{ 0 }
};
#define IA64_LINUX_FPREGS_SIZE (128 * 16)
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 +247,10 @@ 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,