diff options
Diffstat (limited to 'gdb/s390-tdep.c')
| -rw-r--r-- | gdb/s390-tdep.c | 58 |
1 files changed, 54 insertions, 4 deletions
diff --git a/gdb/s390-tdep.c b/gdb/s390-tdep.c index df248a6..31f6267 100644 --- a/gdb/s390-tdep.c +++ b/gdb/s390-tdep.c @@ -40,6 +40,7 @@ #include "reggroups.h" #include "regset.h" #include "s390-linux-tdep.h" +#include "s390-lk-tdep.h" #include "s390-tdep.h" #include "target-descriptions.h" #include "trad-frame.h" @@ -1032,7 +1033,7 @@ s390_core_read_description (struct gdbarch *gdbarch, { asection *section = bfd_get_section_by_name (abfd, ".reg"); CORE_ADDR hwcap = 0; - int high_gprs, v1, v2, te, vx; + int high_gprs, v1, v2, te, vx, cr; target_auxv_search (target, AT_HWCAP, &hwcap); if (!section) @@ -1044,6 +1045,7 @@ s390_core_read_description (struct gdbarch *gdbarch, v2 = (bfd_get_section_by_name (abfd, ".reg-s390-system-call") != NULL); vx = (hwcap & HWCAP_S390_VX); te = (hwcap & HWCAP_S390_TE); + cr = (bfd_get_section_by_name (abfd, ".reg-s390-ctrs") != NULL); switch (bfd_section_size (abfd, section)) { @@ -1060,6 +1062,8 @@ s390_core_read_description (struct gdbarch *gdbarch, case s390x_sizeof_gregset: return (te && vx ? tdesc_s390x_tevx_linux64 : + vx && cr ? tdesc_s390x_vxcr_linux64 : + cr ? tdesc_s390x_cr_linux64 : vx ? tdesc_s390x_vx_linux64 : te ? tdesc_s390x_te_linux64 : v2 ? tdesc_s390x_linux64v2 : @@ -1116,6 +1120,22 @@ s390_iterate_over_regset_sections (struct gdbarch *gdbarch, cb (".reg-s390-vxrs-high", 16 * 16, &s390_vxrs_high_regset, "s390 vector registers 16-31", cb_data); } + + /* Privileged registers for kernel debugging. */ + if (bfd_get_section_by_name (core_bfd, ".reg-s390-timer")) + cb (".reg-s390-timer", 8, &s390x_timer_regset, "s390 timer", cb_data); + if (bfd_get_section_by_name (core_bfd, ".reg-s390-todcmp")) + cb (".reg-s390-todcmp", 8, &s390x_todcmp_regset, + "s390 clock comperator", cb_data); + if (bfd_get_section_by_name (core_bfd, ".reg-s390-todpreg")) + cb (".reg-s390-todpreg", 4, &s390x_todpreg_regset, + "s390 TOD programable register", cb_data); + if (bfd_get_section_by_name (core_bfd, ".reg-s390-ctrs")) + cb (".reg-s390-ctrs", 16 * 8, &s390x_cr_regset, + "s390 control registers", cb_data); + if (bfd_get_section_by_name (core_bfd, ".reg-s390-prefix")) + cb (".reg-s390-prefix", 4, &s390x_prefix_regset, + "s390 prefix area", cb_data); } @@ -2986,6 +3006,7 @@ s390_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) int have_linux_v2 = 0; int have_tdb = 0; int have_vx = 0; + int have_privileged = 0; int first_pseudo_reg, last_pseudo_reg; static const char *const stap_register_prefixes[] = { "%", NULL }; static const char *const stap_register_indirection_prefixes[] = { "(", @@ -3160,6 +3181,30 @@ s390_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) have_vx = 1; } + /* Control registers. */ + feature = tdesc_find_feature (tdesc, "org.gnu.gdb.s390.cr"); + if (feature) + { + for (i = 0; i < 16; i++) + valid_p &= tdesc_numbered_register (feature, tdesc_data, + S390_CR0_REGNUM + i, cr[i]); + } + + /* Privileged registers. */ + feature = tdesc_find_feature (tdesc, "org.gnu.gdb.s390.privileged"); + if (feature) + { + valid_p &= tdesc_numbered_register (feature, tdesc_data, + S390_TIMER_REGNUM, "timer"); + valid_p &= tdesc_numbered_register (feature, tdesc_data, + S390_TODCMP_REGNUM, "todcmp"); + valid_p &= tdesc_numbered_register (feature, tdesc_data, + S390_TODPREG_REGNUM, "todpreg"); + valid_p &= tdesc_numbered_register (feature, tdesc_data, + S390_PREFIX_REGNUM, "prefix"); + have_privileged = 1; + } + if (!valid_p) { tdesc_data_cleanup (tdesc_data); @@ -3336,9 +3381,14 @@ s390_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_stap_register_indirection_suffixes (gdbarch, stap_register_indirection_suffixes); - - /* Note that GNU/Linux is the only OS supported on this platform. */ - s390_gdbarch_linux_init (info, gdbarch); + /* Note that GNU/Linux is the only OS supported on this platform. + Nevertheless we need to distinguish between a kernel- and user-space + gdbarch. GDBs osabi support is not sufficient for our case as for both + cases the ELF bits are for Linux. Thus fallback to this method. */ + if (have_privileged) + s390_gdbarch_lk_init (info, gdbarch); + else + s390_gdbarch_linux_init (info, gdbarch); return gdbarch; } |