[PowerPC] Add support for PPR and DSCR
authorEdjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Fri, 26 Oct 2018 12:37:54 +0000 (09:37 -0300)
committerPedro Franco de Carvalho <pedromfc@linux.ibm.com>
Fri, 26 Oct 2018 13:03:46 +0000 (10:03 -0300)
commit7ca18ed6d22398dd3009ba72d3a1e7747e40753d
treec531258259984fbedc9196c14420ca56da323b75
parent93b4691f0fe1f8249de3c3f9d2e271cb0ba3254e
[PowerPC] Add support for PPR and DSCR

This patch adds gdb support for the Program Priorty Register and the
Data Stream Control Register, for the powerpc linux native and core
file targets, and for the powerpc linux server stub.

gdb/ChangeLog:
2018-10-26  Edjunior Barbosa Machado  <emachado@linux.vnet.ibm.com>
    Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

* arch/ppc-linux-tdesc.h (tdesc_powerpc_isa205_ppr_dscr_vsx32l)
(tdesc_powerpc_isa205_ppr_dscr_vsx64l): Declare.
* arch/ppc-linux-common.h (PPC_LINUX_SIZEOF_PPRREGSET)
(PPC_LINUX_SIZEOF_DSCRREGSET): Define.
(struct ppc_linux_features) <ppr_dscr>: New field.
(ppc_linux_no_features): Add initializer for ppr_dscr field.
* arch/ppc-linux-common.c (ppc_linux_match_description): Return
new tdescs.
* nat/ppc-linux.h (PPC_FEATURE2_DSCR, NT_PPC_PPR, NT_PPC_DSCR):
Define if not already defined.
* features/Makefile (WHICH): Add
rs6000/powerpc-isa205-ppr-dscr-vsx32l and
rs6000/powerpc-isa205-ppr-dscr-vsx64l.
(XMLTOC): Add rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml and
rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml.
* features/rs6000/power-dscr.xml: New file.
* features/rs6000/power-ppr.xml: New file.
* features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml: New file.
* features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml: New file.
* features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.c: Generate.
* features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.c: Generate.
* regformats/rs6000/powerpc-isa205-ppr-dscr-vsx32l.dat: Generate.
* regformats/rs6000/powerpc-isa205-ppr-dscr-vsx64l.dat: Generate.
* ppc-linux-nat.c: Include <sys/uio.h>.
(fetch_regset, store_regset, check_regset): New functions.
(fetch_register, fetch_ppc_registers): Call fetch_regset with
DSCR and PPR regsets.
(store_register, store_ppc_registers): Call store_regset with
DSCR and PPR regsets.
(ppc_linux_get_hwcap2): New function.
(ppc_linux_nat_target::read_description): Call
ppc_linux_get_hwcap2 and check_regset, set ppr_dscr field in the
features struct if needed.
* ppc-linux-tdep.c: Include
features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.c and
features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.c.
(ppc32_regmap_ppr, ppc32_regmap_dscr, ppc32_linux_pprregset)
(ppc32_linux_dscrregset): New globals.
(ppc_linux_iterate_over_regset_sections): Call back with the ppr
and dscr regsets.
(ppc_linux_core_read_description): Check if the ppr and dscr
sections are present and set ppr_dscr in the features struct.
(_initialize_ppc_linux_tdep): Call
initialize_tdesc_powerpc_isa205_ppr_dscr_vsx32l and
initialize_tdesc_powerpc_isa205_ppr_dscr_vsx64l.
* ppc-linux-tdep.h (ppc32_linux_pprregset)
(ppc32_linux_dscrregset): Declare.
* ppc-tdep.h (struct gdbarch_tdep) <ppc_ppr_regnum>: New field.
<ppc_dscr_regnum>: New field.
(enum) <PPC_PPR_REGNUM, PPC_DSCR_REGNUM>: New enum values.
* rs6000-tdep.c (rs6000_gdbarch_init): Look for and validate ppr
and dscr features.
(ppc_process_record_op31): Record changes to PPR and DSCR.

gdb/gdbserver/ChangeLog:
2018-10-26  Edjunior Barbosa Machado  <emachado@linux.vnet.ibm.com>
    Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

* configure.srv (ipa_ppc_linux_regobj): Add
powerpc-isa205-ppr-dscr-vsx32l-ipa.o and
powerpc-isa205-ppr-dscr-vsx64l-ipa.o.
(powerpc*-*-linux*): Add powerpc-isa205-ppr-dscr-vsx32l.o and
powerpc-isa205-ppr-dscr-vsx64l.o to srv_regobj, add
rs6000/power-dscr.xml, rs6000/power-ppr.xml,
rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml and
rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml to srv_xmlfiles.
* linux-ppc-tdesc-init.h (enum ppc_linux_tdesc)
<PPC_TDESC_ISA205_PPR_DSCR_VSX>: New enum value.
(init_registers_powerpc_isa205_ppr_dscr_vsx32l)
(init_registers_powerpc_isa205_ppr_dscr_vsx64l): Declare.
* linux-ppc-low.c: Include "elf/common.h" and <sys/uio.h>.
(ppc_hwcap): Add comment.
(ppc_hwcap2): New global.
(ppc_check_regset, ppc_fill_pprregset, ppc_store_pprregset)
(ppc_fill_dscrregset, ppc_store_dscrregset): New functions.
(ppc_regsets): Add entries for the DSCR and PPR regsets.
(ppc_arch_setup): Get AT_HWCAP2.  Set ppr_dscr in features struct
when needed.  Set sizes for the the DSCR and PPR regsets.
(ppc_get_ipa_tdesc_idx): Return PPC_TDESC_ISA205_PPR_DSCR_VSX.
(initialize_low_arch): Call
init_registers_powerpc_isa205_ppr_dscr_vsx32l and
init_registers_powerpc_isa205_ppr_dscr_vsx64l.
* linux-ppc-ipa.c (get_ipa_tdesc): Handle
PPC_TDESC_ISA205_PPR_DSCR_VSX.
(initialize_low_tracepoint): Call
init_registers_powerpc_isa205_ppr_dscr_vsx32l and
init_registers_powerpc_isa205_ppr_dscr_vsx64l.

gdb/testsuite/ChangeLog:
2018-10-26  Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

* gdb.arch/powerpc-ppr-dscr.c: New file.
* gdb.arch/powerpc-ppr-dscr.exp: New file.

gdb/doc/ChangeLog:
2018-10-26  Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

* gdb.texinfo (PowerPC Features): Describe new features
"org.gnu.gdb.power.ppr" and "org.gnu.gdb.power.dscr".
29 files changed:
gdb/ChangeLog
gdb/arch/ppc-linux-common.c
gdb/arch/ppc-linux-common.h
gdb/arch/ppc-linux-tdesc.h
gdb/doc/ChangeLog
gdb/doc/gdb.texinfo
gdb/features/Makefile
gdb/features/rs6000/power-dscr.xml [new file with mode: 0644]
gdb/features/rs6000/power-ppr.xml [new file with mode: 0644]
gdb/features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.c [new file with mode: 0644]
gdb/features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml [new file with mode: 0644]
gdb/features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.c [new file with mode: 0644]
gdb/features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml [new file with mode: 0644]
gdb/gdbserver/ChangeLog
gdb/gdbserver/configure.srv
gdb/gdbserver/linux-ppc-ipa.c
gdb/gdbserver/linux-ppc-low.c
gdb/gdbserver/linux-ppc-tdesc-init.h
gdb/nat/ppc-linux.h
gdb/ppc-linux-nat.c
gdb/ppc-linux-tdep.c
gdb/ppc-linux-tdep.h
gdb/ppc-tdep.h
gdb/regformats/rs6000/powerpc-isa205-ppr-dscr-vsx32l.dat [new file with mode: 0644]
gdb/regformats/rs6000/powerpc-isa205-ppr-dscr-vsx64l.dat [new file with mode: 0644]
gdb/rs6000-tdep.c
gdb/testsuite/ChangeLog
gdb/testsuite/gdb.arch/powerpc-ppr-dscr.c [new file with mode: 0644]
gdb/testsuite/gdb.arch/powerpc-ppr-dscr.exp [new file with mode: 0644]