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M68K Linux: Define regset structures.

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This commit is contained in:
Andreas Arnez 2014-07-17 08:35:43 +00:00 committed by Ulrich Weigand
parent 8f1cee41f8
commit 08f9f542cb
2 changed files with 76 additions and 0 deletions
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10
gdb/ChangeLog
View File

@ -1,3 +1,13 @@
2014-08-07 Andreas Arnez <arnez@linux.vnet.ibm.com>
* m68klinux-tdep.c: Include "regset.h".
(m68k_linux_gregmap, m68k_linux_fpregmap): New register maps.
(M68K_LINUX_GREGS_SIZE, M68K_LINUX_FPREGS_SIZE): New macros.
(m68k_linux_gregset, m68k_linux_fpregset): New regsets.
(m68k_linux_regset_from_core_section): New function.
(m68k_linux_init_abi): Set regset_from_core_section gdbarch
method.
2014-08-07 Andreas Arnez <arnez@linux.vnet.ibm.com>
* tilegx-linux-tdep.c (tilegx_linux_supply_regset): Delete

66
gdb/m68klinux-tdep.c
View File

@ -37,6 +37,7 @@
#include "observer.h"
#include "elf/common.h"
#include "linux-tdep.h"
#include "regset.h"
/* Offsets (in target ints) into jmp_buf. */
@ -326,6 +327,67 @@ static const struct frame_unwind m68k_linux_sigtramp_frame_unwind =
m68k_linux_sigtramp_frame_sniffer
};
/* Register maps for supply/collect regset functions. */
static const struct regcache_map_entry m68k_linux_gregmap[] =
{
{ 7, M68K_D1_REGNUM, 4 }, /* d1 ... d7 */
{ 7, M68K_A0_REGNUM, 4 }, /* a0 ... a6 */
{ 1, M68K_D0_REGNUM, 4 },
{ 1, M68K_SP_REGNUM, 4 },
{ 1, REGCACHE_MAP_SKIP, 4 }, /* orig_d0 (skip) */
{ 1, M68K_PS_REGNUM, 4 },
{ 1, M68K_PC_REGNUM, 4 },
/* Ignore 16-bit fields 'fmtvec' and '__fill'. */
{ 0 }
};
#define M68K_LINUX_GREGS_SIZE (20 * 4)
static const struct regcache_map_entry m68k_linux_fpregmap[] =
{
{ 8, M68K_FP0_REGNUM, 12 }, /* fp0 ... fp7 */
{ 1, M68K_FPC_REGNUM, 4 },
{ 1, M68K_FPS_REGNUM, 4 },
{ 1, M68K_FPI_REGNUM, 4 },
{ 0 }
};
#define M68K_LINUX_FPREGS_SIZE (27 * 4)
/* Register sets. */
static const struct regset m68k_linux_gregset =
{
m68k_linux_gregmap,
regcache_supply_regset, regcache_collect_regset
};
static const struct regset m68k_linux_fpregset =
{
m68k_linux_fpregmap,
regcache_supply_regset, regcache_collect_regset
};
/* Return the appropriate register set for the core section identified
by SECT_NAME and SECT_SIZE. */
static const struct regset *
m68k_linux_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name,
size_t sect_size)
{
if (strcmp (sect_name, ".reg") == 0
&& sect_size >= M68K_LINUX_GREGS_SIZE)
return &m68k_linux_gregset;
if (strcmp (sect_name, ".reg2") == 0
&& sect_size >= M68K_LINUX_FPREGS_SIZE)
return &m68k_linux_fpregset;
return NULL;
}
static void
m68k_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
@ -360,6 +422,10 @@ m68k_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
/* Core file support. */
set_gdbarch_regset_from_core_section
(gdbarch, m68k_linux_regset_from_core_section);
/* Enable TLS support. */
set_gdbarch_fetch_tls_load_module_address (gdbarch,
svr4_fetch_objfile_link_map);