@@ -1,5 +1,12 @@
2016-01-24 Marcin Kościelnicki <koriakin@0x04.net>
+ * s390-linux-tdep.c (s390_ax_pseudo_register_collect): New function.
+ (s390_ax_pseudo_register_push_stack): New function.
+ (s390_gdbarch_init): Fill ax_pseudo_register_collect and
+ ax_pseudo_register_push_stack hooks.
+
+2016-01-24 Marcin Kościelnicki <koriakin@0x04.net>
+
* s390-linux-tdep.c (s390_write_guessed_tracepoint_pc): New function.
(s390_gdbarch_init): Fill write_guessed_tracepoint_pc hook.
@@ -541,6 +541,82 @@ s390_pseudo_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
return default_register_reggroup_p (gdbarch, regnum, group);
}
+static int
+s390_ax_pseudo_register_collect (struct gdbarch *gdbarch,
+ struct agent_expr *ax, int regnum)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ if (regnum == tdep->pc_regnum)
+ {
+ ax_reg_mask (ax, S390_PSWA_REGNUM);
+ }
+ else if (regnum == tdep->cc_regnum)
+ {
+ ax_reg_mask (ax, S390_PSWM_REGNUM);
+ }
+ else if (regnum_is_gpr_full (tdep, regnum))
+ {
+ regnum -= tdep->gpr_full_regnum;
+ ax_reg_mask (ax, S390_R0_REGNUM + regnum);
+ ax_reg_mask (ax, S390_R0_UPPER_REGNUM + regnum);
+ }
+ else if (regnum_is_vxr_full (tdep, regnum))
+ {
+ regnum -= tdep->v0_full_regnum;
+ ax_reg_mask (ax, S390_F0_REGNUM + regnum);
+ ax_reg_mask (ax, S390_V0_LOWER_REGNUM + regnum);
+ }
+ else
+ {
+ internal_error (__FILE__, __LINE__, _("invalid regnum"));
+ }
+ return 0;
+}
+
+static int
+s390_ax_pseudo_register_push_stack (struct gdbarch *gdbarch,
+ struct agent_expr *ax, int regnum)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ if (regnum == tdep->pc_regnum)
+ {
+ ax_reg (ax, S390_PSWA_REGNUM);
+ if (register_size (gdbarch, S390_PSWA_REGNUM) == 4)
+ {
+ ax_zero_ext (ax, 31);
+ }
+ }
+ else if (regnum == tdep->cc_regnum)
+ {
+ ax_reg (ax, S390_PSWM_REGNUM);
+ if (register_size (gdbarch, S390_PSWA_REGNUM) == 4)
+ ax_const_l (ax, 12);
+ else
+ ax_const_l (ax, 44);
+ ax_simple (ax, aop_rsh_unsigned);
+ ax_zero_ext (ax, 2);
+ }
+ else if (regnum_is_gpr_full (tdep, regnum))
+ {
+ regnum -= tdep->gpr_full_regnum;
+ ax_reg (ax, S390_R0_REGNUM + regnum);
+ ax_reg (ax, S390_R0_UPPER_REGNUM + regnum);
+ ax_const_l (ax, 32);
+ ax_simple (ax, aop_lsh);
+ ax_simple (ax, aop_bit_or);
+ }
+ else if (regnum_is_vxr_full (tdep, regnum))
+ {
+ /* Too large to stuff on the stack. */
+ return 1;
+ }
+ else
+ {
+ internal_error (__FILE__, __LINE__, _("invalid regnum"));
+ }
+ return 0;
+}
+
/* A helper for s390_software_single_step, decides if an instruction
is a partial-execution instruction that needs to be executed until
@@ -7880,6 +7956,10 @@ s390_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_tdesc_pseudo_register_type (gdbarch, s390_pseudo_register_type);
set_tdesc_pseudo_register_reggroup_p (gdbarch,
s390_pseudo_register_reggroup_p);
+ set_gdbarch_ax_pseudo_register_collect (gdbarch,
+ s390_ax_pseudo_register_collect);
+ set_gdbarch_ax_pseudo_register_push_stack
+ (gdbarch, s390_ax_pseudo_register_push_stack);
tdesc_use_registers (gdbarch, tdesc, tdesc_data);
set_gdbarch_register_name (gdbarch, s390_register_name);