ChangeLog:
* s390-tdep.h (S390_ORIG_R2_REGNUM): Define.
(S390_LAST_BREAK_REGNUM): Likewise.
(S390_SYSTEM_CALL_REGNUM): Likewise.
(S390_NUM_REGS): Update.
(s390_regmap_last_break): Add declaration.
(s390x_regmap_last_break): Likewise.
(s390_regmap_system_call): Likewise.
(tdesc_s390_linux32v1): Add declaration.
(tdesc_s390_linux32v2): Likewise.
(tdesc_s390_linux64v1): Likewise.
(tdesc_s390_linux64v2): Likewise.
(tdesc_s390x_linux64v1): Likewise.
(tdesc_s390x_linux64v2): Likewise.
* s390-tdep.c: Include new target description files
"features/s390-linux32v1.c", "features/s390-linux32v2.c",
"features/s390-linux64v1.c", "features/s390-linux64v2.c",
"features/s390x-linux64v1.c", and "features/s390x-linux64v2.c".
(s390_cannot_store_register): New function.
(s390_write_pc): Likewise.
(s390_dwarf_regmap): Add fields for new registers.
(s390_regmap_gregset): Likewise.
(s390x_regmap_gregset): Likewise.
(s390_regmap_fpregset): Likewise.
(s390_regmap_upper): Likewise.
(s390_regmap_last_break): New variable.
(s390x_regmap_last_break): Likewise.
(s390_regmap_system_call): Likewise.
(s390_last_break_regset): Likewise.
(s390x_last_break_regset): Likewise.
(s390_system_call_regset): Likewise.
(s390_upper_regset_sections): Rename to ...
(s390_linux64_regset_sections): ... this.
(s390_linux32_regset_sections): New variable.
(s390x_linux64_regset_sections): Likewise.
(s390_linux32v1_regset_sections): Likewise.
(s390_linux32v2_regset_sections): Likewise.
(s390_linux64v1_regset_sections): Likewise.
(s390_linux64v2_regset_sections): Likewise.
(s390x_linux64v1_regset_sections): Likewise.
(s390x_linux64v2_regset_sections): Likewise.
(s390_regset_from_core_section): Handle .reg-s390-last-break and
.reg-s390-system-call core file sections.
(s390_core_read_description): Check for presence of
.reg-s390-last-break and .reg-s390-system-call core file
sections and return appropriate target description.
(s390_gdbarch_init): Detect Linux-specific registers "orig_r2",
"last_break" and "system_call" in target description. Install
appropriate gdbarch_core_regset_sections array.
Call set_gdbarch_cannot_store_register and set_gdbarch_write_pc.
(_initialize_s390_tdep): Initialize additional target descriptions.
* s390-nat.c: Include "elf/common.h".
(PTRACE_GETREGSET, PTRACE_SETREGSET): Define if undefined.
(have_regset_last_break): New static variable.
(have_regset_system_call): Likewise.
(s390_native_supply): Handle S390_ORIG_R2_REGNUM.
(s390_native_collect): Likewise.
(fetch_regset, store_regset, check_regset): New functions.
(s390_linux_fetch_inferior_registers): Handle S390_LAST_BREAK_REGNUM
and S390_SYSTEM_CALL_REGNUM.
(s390_linux_store_inferior_registers): Likewise.
(s390_read_description): Check for presence of NT_S390_LAST_BREAK
and NT_S390_SYSTEM_CALL regsets and use appropriate description.
* features/Makefile (WHICH): Add s390-linux32v1, s390-linux64v1,
s390x-linux64v1, s390-linux32v2, s390-linux64v2, and s390x-linux64v2.
(s390-linux32v1-expedite): Define.
(s390-linux32v2-expedite): Likewise.
(s390-linux64v1-expedite): Likewise.
(s390-linux64v2-expedite): Likewise.
(s390x-linux64v1-expedite): Likewise.
(s390x-linux64v2-expedite): Likewise.
* features/s390-linux32.xml: Add orig_r2 register.
* features/s390-linux64.xml: Likewise.
* features/s390x-linux64.xml: Likewise.
* features/s390-linux32v1.xml: New file.
* features/s390-linux32v2.xml: Likewise.
* features/s390-linux64v1.xml: Likewise.
* features/s390-linux64v2.xml: Likewise.
* features/s390x-linux64v1.xml: Likewise.
* features/s390x-linux64v2.xml: Likewise.
* features/s390-linux32.c: Regenerate.
* features/s390-linux64.c: Likewise.
* features/s390x-linux64.c: Likewise.
* features/s390-linux32v1.c: New generated file.
* features/s390-linux32v2.c: Likewise.
* features/s390-linux64v1.c: Likewise.
* features/s390-linux64v2.c: Likewise.
* features/s390x-linux64v1.c: Likewise.
* features/s390x-linux64v2.c: Likewise.
* regformats/s390-linux32.dat: Regenerate.
* regformats/s390-linux64.dat: Regenerate.
* regformats/s390x-linux64.dat: Regenerate.
* regformats/s390-linux32v1.dat: New generated file.
* regformats/s390-linux32v2.dat: Likewise.
* regformats/s390-linux64v1.dat: Likewise.
* regformats/s390-linux64v2.dat: Likewise.
* regformats/s390x-linux64v1.dat: Likewise.
* regformats/s390x-linux64v2.dat: Likewise.
gdbserver/ChangeLog:
* Makefile.in (s390-linux32v1.o, s390-linux32v1.c): New rules.
(s390-linux32v2.o, s390-linux32v2.c): Likewise.
(s390-linux64v1.o, s390-linux64v1.c): Likewise.
(s390-linux64v2.o, s390-linux64v2.c): Likewise.
(s390x-linux64v1.o, s390x-linux64v1.c): Likewise.
(s390x-linux64v2.o, s390x-linux64v2.c): Likewise.
* configure.srv [s390*-*-linux*] (srv_regobj): Add new objects.
(srv_xmlfiles): Add new XML files.
* linux-s390-low.c: Include "elf/common.h", <sys/ptrace.h>,
and <sys/uio.h>.
(PTRACE_GETREGSET, PTRACE_SETREGSET): Define if undefined.
(init_registers_s390_linux32v1): Add prototype.
(init_registers_s390_linux32v2): Likewise.
(init_registers_s390_linux64v1): Likewise.
(init_registers_s390_linux64v2): Likewise.
(init_registers_s390x_linux64v1): Likewise.
(init_registers_s390x_linux64v2): Likewise.
(s390_num_regs): Increment to 52.
(s390_regmap): Add orig_r2 register.
(s390_num_regs_3264): Increment to 68.
(s390_regmap_3264): Add orig_r2 register.
(s390_collect_ptrace_register): Handle orig_r2 register.
(s390_supply_ptrace_register): Likewise.
(s390_fill_last_break): New function.
(s390_store_last_break): Likewise.
(s390_fill_system_call): New function.
(s390_store_system_call): Likewise.
(target_regsets): Handle NT_S390_LAST_BREAK and NT_S390_SYSTEM_CALL
register sets.
(s390_check_regset): New function.
(s390_arch_setup): Check for presence of NT_S390_LAST_BREAK and
NT_S390_SYSTEM_CALL regsets and use appropriate description.
Update target_regsets for available register sets.
testsuite/ChangeLog:
* gdb.base/callfuncs.exp (fetch_all_registers): Filter out read-only
last_break register on s390*-*-* targets.
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