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Add support for ELF core files on OpenBSD/sparc64.

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gdb/ChangeLog:

        * sparc64obsd-tdep.c (sparc64obsd_gregset): New variable.
        (sparc64obsd_supply_gregset): Handle registers sets used in ELF
        core dumps.
        (sparc64obsd_init_abi): Adjust minimum size of the general purpose
        register set used in ELF core dumps.  Add floating-point register set.
This commit is contained in:
Mark Kettenis 2014-02-04 13:18:15 +01:00
parent c5bb736278
commit 26fd922825
2 changed files with 51 additions and 10 deletions
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8
gdb/ChangeLog
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@ -1,3 +1,11 @@
2014-02-04 Mark Kettenis <kettenis@gnu.org>
* sparc64obsd-tdep.c (sparc64obsd_gregset): New variable.
(sparc64obsd_supply_gregset): Handle registers sets used in ELF
core dumps.
(sparc64obsd_init_abi): Adjust minimum size of the general purpose
register set used in ELF core dumps. Add floating-point register set.
2014-02-03 Kevin Buettner <kevinb@redhat.com>
* mn10300-tdep.c (mn10300_dwarf2_reg_to_regnum): Rewrite

53
gdb/sparc64obsd-tdep.c
View file

@ -35,14 +35,30 @@
#include "solib-svr4.h"
#include "bsd-uthread.h"
/* OpenBSD uses the traditional NetBSD core file format, even for
ports that use ELF. The core files don't use multiple register
sets. Instead, the general-purpose and floating-point registers
are lumped together in a single section. Unlike on NetBSD, OpenBSD
uses a different layout for its general-purpose registers than the
layout used for ptrace(2). */
/* Older OpenBSD versions used the traditional NetBSD core file
format, even for ports that use ELF. These core files don't use
multiple register sets. Instead, the general-purpose and
floating-point registers are lumped together in a single section.
Unlike on NetBSD, OpenBSD uses a different layout for its
general-purpose registers than the layout used for ptrace(2).
Newer OpenBSD versions use ELF core files. Here the register sets
match the ptrace(2) layout. */
/* From <machine/reg.h>. */
const struct sparc_gregset sparc64obsd_gregset =
{
0 * 8, /* "tstate" */
1 * 8, /* %pc */
2 * 8, /* %npc */
3 * 8, /* %y */
-1, /* %fprs */
-1,
5 * 8, /* %g1 */
20 * 8, /* %l0 */
4 /* sizeof (%y) */
};
const struct sparc_gregset sparc64obsd_core_gregset =
{
0 * 8, /* "tstate" */
@ -61,10 +77,24 @@ sparc64obsd_supply_gregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
const char *regs = gregs;
const void *fpregs = (char *)gregs + 288;
sparc64_supply_gregset (&sparc64obsd_core_gregset, regcache, regnum, regs);
sparc64_supply_fpregset (&sparc64_bsd_fpregset, regcache, regnum, regs + 288);
if (len < 832)
{
sparc64_supply_gregset (&sparc64obsd_gregset, regcache, regnum, gregs);
return;
}
sparc64_supply_gregset (&sparc64obsd_core_gregset, regcache, regnum, gregs);
sparc64_supply_fpregset (&sparc64_bsd_fpregset, regcache, regnum, fpregs);
}
static void
sparc64obsd_supply_fpregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *fpregs, size_t len)
{
sparc64_supply_fpregset (&sparc64_bsd_fpregset, regcache, regnum, fpregs);
}
@ -379,7 +409,10 @@ sparc64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
tdep->gregset = regset_alloc (gdbarch, sparc64obsd_supply_gregset, NULL);
tdep->sizeof_gregset = 832;
tdep->sizeof_gregset = 288;
tdep->fpregset = regset_alloc (gdbarch, sparc64obsd_supply_fpregset, NULL);
tdep->sizeof_fpregset = 272;
/* Make sure we can single-step "new" syscalls. */
tdep->step_trap = sparcnbsd_step_trap;