Imagelibrary/binutils-gdb
1
0
Fork 1
mirror of https://github.com/bminor/binutils-gdb.git synced 2025-12-26 01:07:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

* ppc-sysv-tdep.c (ppc_sysv_abi_push_dummy_call): Check the selected

Browse Source 
soft float and vector ABIs.  Support the generic vector ABI for
	AltiVec types.
	(do_ppc_sysv_return_value): Likewise.  Correct argument types and
	casts.
	(ppc64_sysv_abi_push_dummy_call): Assert that floating point is
	supported.
	* ppc-tdep.h (enum powerpc_vector_abi): New.
	(struct gdbarch_tdep): Add soft_float and vector_abi.
	* rs6000-tdep.c (setpowerpccmdlist, showpowerpccmdlist)
	(powerpc_soft_float_global, powerpc_vector_strings)
	(powerpc_vector_abi_global, powerpc_vector_abi_string): New.
	(rs6000_gdbarch_init): Check for soft-float and vector ABI markings.
	(set_powerpc_command, show_powerpc_command, powerpc_set_soft_float)
	(powerpc_set_vector_abi): New.
	(_initialize_rs6000_tdep): Register "set powerpc" and "show powerpc"
	commands.
	* Makefile.in (elf_ppc_h): New.
	(rs6000-tdep.o): Update.

	* gdb.texinfo (PowerPC): Document "set powerpc vector-abi" and "set
	powerpc soft-float".

	* gdb.arch/altivec-abi.exp: Run multiple times for GCC on GNU/Linux.
	Test "set powerpc vector-abi".  Skip auto-detection tests for old
	toolchains.
This commit is contained in:
Daniel Jacobowitz
2007-10-30 19:35:35 +00:00
parent 7020f05c27
commit 55eddb0f7a
9 changed files with 431 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files

182
gdb/rs6000-tdep.c
View File

@@ -49,6 +49,7 @@
#include "libxcoff.h"
#include "elf-bfd.h"
#include "elf/ppc.h"
#include "solib-svr4.h"
#include "ppc-tdep.h"
@@ -77,6 +78,27 @@
#include "features/rs6000/powerpc-e500.c"
#include "features/rs6000/rs6000.c"
/* The list of available "set powerpc ..." and "show powerpc ..."
commands. */
static struct cmd_list_element *setpowerpccmdlist = NULL;
static struct cmd_list_element *showpowerpccmdlist = NULL;
static enum auto_boolean powerpc_soft_float_global = AUTO_BOOLEAN_AUTO;
/* The vector ABI to use. Keep this in sync with powerpc_vector_abi. */
static const char *powerpc_vector_strings[] =
{
"auto",
"generic",
"altivec",
"spe",
NULL
};
/* A variable that can be configured by the user. */
static enum powerpc_vector_abi powerpc_vector_abi_global = POWERPC_VEC_AUTO;
static const char *powerpc_vector_abi_string = "auto";
/* If the kernel has to deliver a signal, it pushes a sigcontext
structure on the stack and then calls the signal handler, passing
the address of the sigcontext in an argument register. Usually
@@ -3145,6 +3167,9 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
bfd abfd;
int sysv_abi;
asection *sect;
enum auto_boolean soft_float_flag = powerpc_soft_float_global;
int soft_float;
enum powerpc_vector_abi vector_abi = powerpc_vector_abi_global;
int have_fpu = 1, have_spe = 0, have_mq = 0, have_altivec = 0;
int tdesc_wordsize = -1;
const struct target_desc *tdesc = info.target_desc;
@@ -3417,6 +3442,76 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
return NULL;
}
#ifdef HAVE_ELF
if (soft_float_flag == AUTO_BOOLEAN_AUTO && from_elf_exec)
{
switch (bfd_elf_get_obj_attr_int (info.abfd, OBJ_ATTR_GNU,
Tag_GNU_Power_ABI_FP))
{
case 1:
soft_float_flag = AUTO_BOOLEAN_FALSE;
break;
case 2:
soft_float_flag = AUTO_BOOLEAN_TRUE;
break;
default:
break;
}
}
if (vector_abi == POWERPC_VEC_AUTO && from_elf_exec)
{
switch (bfd_elf_get_obj_attr_int (info.abfd, OBJ_ATTR_GNU,
Tag_GNU_Power_ABI_Vector))
{
case 1:
vector_abi = POWERPC_VEC_GENERIC;
break;
case 2:
vector_abi = POWERPC_VEC_ALTIVEC;
break;
case 3:
vector_abi = POWERPC_VEC_SPE;
break;
default:
break;
}
}
#endif
if (soft_float_flag == AUTO_BOOLEAN_TRUE)
soft_float = 1;
else if (soft_float_flag == AUTO_BOOLEAN_FALSE)
soft_float = 0;
else
soft_float = !have_fpu;
/* If we have a hard float binary or setting but no floating point
registers, downgrade to soft float anyway. We're still somewhat
useful in this scenario. */
if (!soft_float && !have_fpu)
soft_float = 1;
/* Similarly for vector registers. */
if (vector_abi == POWERPC_VEC_ALTIVEC && !have_altivec)
vector_abi = POWERPC_VEC_GENERIC;
if (vector_abi == POWERPC_VEC_SPE && !have_spe)
vector_abi = POWERPC_VEC_GENERIC;
if (vector_abi == POWERPC_VEC_AUTO)
{
if (have_altivec)
vector_abi = POWERPC_VEC_ALTIVEC;
else if (have_spe)
vector_abi = POWERPC_VEC_SPE;
else
vector_abi = POWERPC_VEC_GENERIC;
}
/* Do not limit the vector ABI based on available hardware, since we
do not yet know what hardware we'll decide we have. Yuck! FIXME! */
/* Find a candidate among extant architectures. */
for (arches = gdbarch_list_lookup_by_info (arches, &info);
arches != NULL;
@@ -3426,6 +3521,10 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
meaningful, because 64-bit CPUs can run in 32-bit mode. So, perform
separate word size check. */
tdep = gdbarch_tdep (arches->gdbarch);
if (tdep && tdep->soft_float != soft_float)
continue;
if (tdep && tdep->vector_abi != vector_abi)
continue;
if (tdep && tdep->wordsize == wordsize)
{
if (tdesc_data != NULL)
@@ -3444,6 +3543,8 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep = XCALLOC (1, struct gdbarch_tdep);
tdep->wordsize = wordsize;
tdep->soft_float = soft_float;
tdep->vector_abi = vector_abi;
gdbarch = gdbarch_alloc (&info, tdep);
@@ -3643,6 +3744,61 @@ rs6000_dump_tdep (struct gdbarch *gdbarch, struct ui_file *file)
/* FIXME: Dump gdbarch_tdep. */
}
/* PowerPC-specific commands. */
static void
set_powerpc_command (char *args, int from_tty)
{
printf_unfiltered (_("\
\"set powerpc\" must be followed by an appropriate subcommand.\n"));
help_list (setpowerpccmdlist, "set powerpc ", all_commands, gdb_stdout);
}
static void
show_powerpc_command (char *args, int from_tty)
{
cmd_show_list (showpowerpccmdlist, from_tty, "");
}
static void
powerpc_set_soft_float (char *args, int from_tty,
struct cmd_list_element *c)
{
struct gdbarch_info info;
/* Update the architecture. */
gdbarch_info_init (&info);
if (!gdbarch_update_p (info))
internal_error (__FILE__, __LINE__, "could not update architecture");
}
static void
powerpc_set_vector_abi (char *args, int from_tty,
struct cmd_list_element *c)
{
struct gdbarch_info info;
enum powerpc_vector_abi vector_abi;
for (vector_abi = POWERPC_VEC_AUTO;
vector_abi != POWERPC_VEC_LAST;
vector_abi++)
if (strcmp (powerpc_vector_abi_string,
powerpc_vector_strings[vector_abi]) == 0)
{
powerpc_vector_abi_global = vector_abi;
break;
}
if (vector_abi == POWERPC_VEC_LAST)
internal_error (__FILE__, __LINE__, _("Invalid vector ABI accepted: %s."),
powerpc_vector_abi_string);
/* Update the architecture. */
gdbarch_info_init (&info);
if (!gdbarch_update_p (info))
internal_error (__FILE__, __LINE__, "could not update architecture");
}
/* Initialization code. */
extern initialize_file_ftype _initialize_rs6000_tdep; /* -Wmissing-prototypes */
@@ -3668,4 +3824,30 @@ _initialize_rs6000_tdep (void)
initialize_tdesc_powerpc_860 ();
initialize_tdesc_powerpc_e500 ();
initialize_tdesc_rs6000 ();
/* Add root prefix command for all "set powerpc"/"show powerpc"
commands. */
add_prefix_cmd ("powerpc", no_class, set_powerpc_command,
_("Various PowerPC-specific commands."),
&setpowerpccmdlist, "set powerpc ", 0, &setlist);
add_prefix_cmd ("powerpc", no_class, show_powerpc_command,
_("Various PowerPC-specific commands."),
&showpowerpccmdlist, "show powerpc ", 0, &showlist);
/* Add a command to allow the user to force the ABI. */
add_setshow_auto_boolean_cmd ("soft-float", class_support,
&powerpc_soft_float_global,
_("Set whether to use a soft-float ABI."),
_("Show whether to use a soft-float ABI."),
NULL,
powerpc_set_soft_float, NULL,
&setpowerpccmdlist, &showpowerpccmdlist);
add_setshow_enum_cmd ("vector-abi", class_support, powerpc_vector_strings,
&powerpc_vector_abi_string,
_("Set the vector ABI."),
_("Show the vector ABI."),
NULL, powerpc_set_vector_abi, NULL,
&setpowerpccmdlist, &showpowerpccmdlist);
}