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[PATCH-ppc 2/5] Add VSX support for core-files
- From: Luis Machado <luisgpm at linux dot vnet dot ibm dot com>
- To: gdb-patches at sourceware dot org
- Date: Fri, 25 Jul 2008 17:15:46 -0300
- Subject: [PATCH-ppc 2/5] Add VSX support for core-files
- Reply-to: luisgpm at linux dot vnet dot ibm dot com
This patch adds the required support to dump VSX registers and read them
them back from a specific VSX notes section. This is in sync with the
format used by the Kernel.
---
2008-07-25 Luis Machado <luisgpm@br.ibm.com>
* ppc-linux-tdep.c (ppc_linux_regset_sections): Add new ".reg-ppc-vsx" field.
(ppc32_linux_vsxregset): New 32-bit VSX-enabled regset.
(ppc_linux_regset_from_core_section): Handle VSX core section.
(ppc_linux_core_read_description): Support VSX-enabled core files.
* corelow.c (get_core_register_section): Support VSX-enabled
core files.
Index: gdb/ppc-linux-tdep.c
===================================================================
--- gdb.orig/ppc-linux-tdep.c 2008-07-23 09:28:09.000000000 -0700
+++ gdb/ppc-linux-tdep.c 2008-07-23 09:31:44.000000000 -0700
@@ -496,6 +496,7 @@
{ ".reg", 268 },
{ ".reg2", 264 },
{ ".reg-ppc-vmx", 544 },
+ { ".reg-ppc-vsx", 256 },
{ NULL, 0}
};
@@ -743,6 +744,13 @@
NULL
};
+static const struct regset ppc32_linux_vsxregset = {
+ &ppc32_linux_reg_offsets,
+ ppc_supply_vsxregset,
+ ppc_collect_vsxregset,
+ NULL
+};
+
const struct regset *
ppc_linux_gregset (int wordsize)
{
@@ -771,6 +779,8 @@
return &ppc32_linux_fpregset;
if (strcmp (sect_name, ".reg-ppc-vmx") == 0)
return &ppc32_linux_vrregset;
+ if (strcmp (sect_name, ".reg-ppc-vsx") == 0)
+ return &ppc32_linux_vsxregset;
return NULL;
}
@@ -974,6 +984,7 @@
bfd *abfd)
{
asection *altivec = bfd_get_section_by_name (abfd, ".reg-ppc-vmx");
+ asection *vsx = bfd_get_section_by_name (abfd, ".reg-ppc-vsx");
asection *section = bfd_get_section_by_name (abfd, ".reg");
if (! section)
return NULL;
@@ -981,10 +992,20 @@
switch (bfd_section_size (abfd, section))
{
case 48 * 4:
- return altivec? tdesc_powerpc_altivec32l : tdesc_powerpc_32l;
+ if (vsx)
+ return tdesc_powerpc_vsx32l;
+ else if (altivec)
+ return tdesc_powerpc_altivec32l;
+ else
+ return tdesc_powerpc_32l;
case 48 * 8:
- return altivec? tdesc_powerpc_altivec64l : tdesc_powerpc_64l;
+ if (vsx)
+ return tdesc_powerpc_vsx64l;
+ else if (altivec)
+ return tdesc_powerpc_altivec64l;
+ else
+ return tdesc_powerpc_64l;
default:
return NULL;
Index: gdb/corelow.c
===================================================================
--- gdb.orig/corelow.c 2008-07-23 09:28:09.000000000 -0700
+++ gdb/corelow.c 2008-07-23 09:31:44.000000000 -0700
@@ -499,6 +499,8 @@
".reg-xfp", 3, "extended floating-point", 0);
get_core_register_section (regcache,
".reg-ppc-vmx", 3, "ppc Altivec", 0);
+ get_core_register_section (regcache,
+ ".reg-ppc-vsx", 4, "POWER7 VSX", 0);
/* Supply dummy value for all registers not found in the core. */
for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)