"ffr", "vg"
};
+static const char *const aarch64_pauth_register_names[] =
+{
+ /* Authentication mask for data pointer. */
+ "pauth_dmask",
+ /* Authentication mask for code pointer. */
+ "pauth_cmask"
+};
+
/* AArch64 prologue cache structure. */
struct aarch64_prologue_cache
{
reggroup_add (gdbarch, restore_reggroup);
}
+/* Implement the "cannot_store_register" gdbarch method. */
+
+static int
+aarch64_cannot_store_register (struct gdbarch *gdbarch, int regnum)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ if (!tdep->has_pauth ())
+ return 0;
+
+ /* Pointer authentication registers are read-only. */
+ return (regnum == AARCH64_PAUTH_DMASK_REGNUM (tdep->pauth_reg_base)
+ || regnum == AARCH64_PAUTH_CMASK_REGNUM (tdep->pauth_reg_base));
+}
+
/* Initialize the current architecture based on INFO. If possible,
re-use an architecture from ARCHES, which is a list of
architectures already created during this debugging session.
const struct tdesc_feature *feature_core;
const struct tdesc_feature *feature_fpu;
const struct tdesc_feature *feature_sve;
+ const struct tdesc_feature *feature_pauth;
int num_regs = 0;
int num_pseudo_regs = 0;
+ int first_pauth_regnum = -1;
/* Ensure we always have a target description. */
if (!tdesc_has_registers (tdesc))
feature_core = tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.core");
feature_fpu = tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.fpu");
feature_sve = tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.sve");
+ feature_pauth = tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.pauth");
if (feature_core == NULL)
return NULL;
num_pseudo_regs += 32; /* add the Bn scalar register pseudos */
}
+ /* Add the pauth registers. */
+ if (feature_pauth != NULL)
+ {
+ first_pauth_regnum = num_regs;
+
+ /* Validate the descriptor provides the mandatory PAUTH registers and
+ allocate their numbers. */
+ for (i = 0; i < ARRAY_SIZE (aarch64_pauth_register_names); i++)
+ valid_p &= tdesc_numbered_register (feature_pauth, tdesc_data,
+ first_pauth_regnum + i,
+ aarch64_pauth_register_names[i]);
+
+ num_regs += i;
+ }
+
if (!valid_p)
{
tdesc_data_cleanup (tdesc_data);
tdep->jb_pc = -1; /* Longjump support not enabled by default. */
tdep->jb_elt_size = 8;
tdep->vq = aarch64_get_tdesc_vq (tdesc);
+ tdep->pauth_reg_base = first_pauth_regnum;
set_gdbarch_push_dummy_call (gdbarch, aarch64_push_dummy_call);
set_gdbarch_frame_align (gdbarch, aarch64_frame_align);
set_tdesc_pseudo_register_type (gdbarch, aarch64_pseudo_register_type);
set_tdesc_pseudo_register_reggroup_p (gdbarch,
aarch64_pseudo_register_reggroup_p);
+ set_gdbarch_cannot_store_register (gdbarch, aarch64_cannot_store_register);
/* ABI */
set_gdbarch_short_bit (gdbarch, 16);