/* Common target dependent code for GDB on AArch64 systems.
- Copyright (C) 2009-2021 Free Software Foundation, Inc.
+ Copyright (C) 2009-2022 Free Software Foundation, Inc.
Contributed by ARM Ltd.
This file is part of GDB.
#define HA_MAX_NUM_FLDS 4
/* All possible aarch64 target descriptors. */
-static target_desc *tdesc_aarch64_list[AARCH64_MAX_SVE_VQ + 1][2/*pauth*/];
+static target_desc *tdesc_aarch64_list[AARCH64_MAX_SVE_VQ + 1][2/*pauth*/][2 /* mte */];
/* The standard register names, and all the valid aliases for them. */
static const struct
"pauth_cmask"
};
+static const char *const aarch64_mte_register_names[] =
+{
+ /* Tag Control Register. */
+ "tag_ctl"
+};
+
/* AArch64 prologue cache structure. */
struct aarch64_prologue_cache
{
THIS_FRAME. */
static CORE_ADDR
-aarch64_frame_unmask_lr (struct gdbarch_tdep *tdep,
+aarch64_frame_unmask_lr (aarch64_gdbarch_tdep *tdep,
struct frame_info *this_frame, CORE_ADDR addr)
{
if (tdep->has_pauth ()
}
else if (inst.opcode->iclass == ic_system)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep
+ = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
int ra_state_val = 0;
if (insn == 0xd503233f /* paciasp. */
/* Return addresses are not mangled. */
ra_state_val = 0;
}
+ else if (IS_BTI (insn))
+ /* We don't need to do anything special for a BTI instruction. */
+ continue;
else
{
aarch64_debug_printf ("prologue analysis gave up addr=%s"
{
struct gdbarch_info info;
- gdbarch_info_init (&info);
info.bfd_arch_info = bfd_scan_arch ("aarch64");
struct gdbarch *gdbarch = gdbarch_find_by_info (info);
struct aarch64_prologue_cache cache;
cache.saved_regs = trad_frame_alloc_saved_regs (gdbarch);
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
/* Test the simple prologue in which frame pointer is used. */
{
SELF_CHECK (cache.saved_regs[regnum].is_value ());
}
}
+
+ /* Test a prologue with a BTI instruction. */
+ {
+ static const uint32_t insns[] = {
+ 0xd503245f, /* bti */
+ 0xa9bd7bfd, /* stp x29, x30, [sp, #-48]! */
+ 0x910003fd, /* mov x29, sp */
+ 0xf801c3f3, /* str x19, [sp, #28] */
+ 0xb9401fa0, /* ldr x19, [x29, #28] */
+ };
+ instruction_reader_test reader (insns);
+
+ trad_frame_reset_saved_regs (gdbarch, cache.saved_regs);
+ CORE_ADDR end = aarch64_analyze_prologue (gdbarch, 0, 128, &cache,
+ reader);
+
+ SELF_CHECK (end == 4 * 4);
+ SELF_CHECK (cache.framereg == AARCH64_FP_REGNUM);
+ SELF_CHECK (cache.framesize == 48);
+
+ for (int i = 0; i < AARCH64_X_REGISTER_COUNT; i++)
+ {
+ if (i == 19)
+ SELF_CHECK (cache.saved_regs[i].addr () == -20);
+ else if (i == AARCH64_FP_REGNUM)
+ SELF_CHECK (cache.saved_regs[i].addr () == -48);
+ else if (i == AARCH64_LR_REGNUM)
+ SELF_CHECK (cache.saved_regs[i].addr () == -40);
+ else
+ SELF_CHECK (cache.saved_regs[i].is_realreg ()
+ && cache.saved_regs[i].realreg () == i);
+ }
+ }
}
} // namespace selftests
#endif /* GDB_SELF_TEST */
return UNWIND_UNAVAILABLE;
/* Halt the backtrace at "_start". */
- if (cache->prev_pc <= gdbarch_tdep (get_frame_arch (this_frame))->lowest_pc)
+ gdbarch *arch = get_frame_arch (this_frame);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (arch);
+ if (cache->prev_pc <= tdep->lowest_pc)
return UNWIND_OUTERMOST;
/* We've hit a wall, stop. */
{
CORE_ADDR lr;
struct gdbarch *gdbarch = get_frame_arch (this_frame);
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep
+ = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
lr = frame_unwind_register_unsigned (this_frame, AARCH64_LR_REGNUM);
/* AArch64 prologue unwinder. */
static frame_unwind aarch64_prologue_unwind =
{
+ "aarch64 prologue",
NORMAL_FRAME,
aarch64_prologue_frame_unwind_stop_reason,
aarch64_prologue_this_id,
/* AArch64 stub unwinder. */
static frame_unwind aarch64_stub_unwind =
{
+ "aarch64 stub",
NORMAL_FRAME,
aarch64_stub_frame_unwind_stop_reason,
aarch64_stub_this_id,
aarch64_dwarf2_prev_register (struct frame_info *this_frame,
void **this_cache, int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame));
+ gdbarch *arch = get_frame_arch (this_frame);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (arch);
CORE_ADDR lr;
switch (regnum)
struct dwarf2_frame_state_reg *reg,
struct frame_info *this_frame)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
switch (regnum)
{
aarch64_execute_dwarf_cfa_vendor_op (struct gdbarch *gdbarch, gdb_byte op,
struct dwarf2_frame_state *fs)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
struct dwarf2_frame_state_reg *ra_state;
if (op == DW_CFA_AARCH64_negate_ra_state)
int len = TYPE_LENGTH (type);
enum type_code typecode = type->code ();
int regnum = AARCH64_X0_REGNUM + info->ngrn;
- const bfd_byte *buf = value_contents (arg);
+ const bfd_byte *buf = value_contents (arg).data ();
info->argnum++;
pass_on_stack (struct aarch64_call_info *info, struct type *type,
struct value *arg)
{
- const bfd_byte *buf = value_contents (arg);
+ const bfd_byte *buf = value_contents (arg).data ();
int len = TYPE_LENGTH (type);
int align;
stack_item_t item;
{
case TYPE_CODE_FLT:
return pass_in_v (gdbarch, regcache, info, TYPE_LENGTH (arg_type),
- value_contents (arg));
+ value_contents (arg).data ());
break;
case TYPE_CODE_COMPLEX:
{
- const bfd_byte *buf = value_contents (arg);
+ const bfd_byte *buf = value_contents (arg).data ();
struct type *target_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
if (!pass_in_v (gdbarch, regcache, info, TYPE_LENGTH (target_type),
case TYPE_CODE_ARRAY:
if (arg_type->is_vector ())
return pass_in_v (gdbarch, regcache, info, TYPE_LENGTH (arg_type),
- value_contents (arg));
+ value_contents (arg).data ());
/* fall through. */
case TYPE_CODE_STRUCT:
case TYPE_CODE_CHAR:
case TYPE_CODE_RANGE:
case TYPE_CODE_ENUM:
- if (len < 4)
+ if (len < 4 && !is_fixed_point_type (arg_type))
{
/* Promote to 32 bit integer. */
if (arg_type->is_unsigned ())
sp = align_down (sp - len, 16);
/* Write the real data into the stack. */
- write_memory (sp, value_contents (arg), len);
+ write_memory (sp, value_contents (arg).data (), len);
/* Construct the indirection. */
arg_type = lookup_pointer_type (arg_type);
static struct type *
aarch64_vnq_type (struct gdbarch *gdbarch)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep->vnq_type == NULL)
{
static struct type *
aarch64_vnd_type (struct gdbarch *gdbarch)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep->vnd_type == NULL)
{
static struct type *
aarch64_vns_type (struct gdbarch *gdbarch)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep->vns_type == NULL)
{
static struct type *
aarch64_vnh_type (struct gdbarch *gdbarch)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep->vnh_type == NULL)
{
static struct type *
aarch64_vnb_type (struct gdbarch *gdbarch)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep->vnb_type == NULL)
{
static struct type *
aarch64_vnv_type (struct gdbarch *gdbarch)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep->vnv_type == NULL)
{
static int
aarch64_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (reg >= AARCH64_DWARF_X0 && reg <= AARCH64_DWARF_X0 + 30)
return AARCH64_X0_REGNUM + reg - AARCH64_DWARF_X0;
CORE_ADDR jb_addr;
gdb_byte buf[X_REGISTER_SIZE];
struct gdbarch *gdbarch = get_frame_arch (frame);
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
jb_addr = get_frame_register_unsigned (frame, AARCH64_X0_REGNUM);
static const char *
aarch64_pseudo_register_name (struct gdbarch *gdbarch, int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
static const char *const q_name[] =
{
static struct type *
aarch64_pseudo_register_type (struct gdbarch *gdbarch, int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
int p_regnum = regnum - gdbarch_num_regs (gdbarch);
aarch64_pseudo_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
struct reggroup *group)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
int p_regnum = regnum - gdbarch_num_regs (gdbarch);
mark_value_bytes_unavailable (result_value, 0,
TYPE_LENGTH (value_type (result_value)));
else
- memcpy (value_contents_raw (result_value), reg_buf, regsize);
+ memcpy (value_contents_raw (result_value).data (), reg_buf, regsize);
return result_value;
}
aarch64_pseudo_read_value (struct gdbarch *gdbarch, readable_regcache *regcache,
int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
struct value *result_value = allocate_value (register_type (gdbarch, regnum));
VALUE_LVAL (result_value) = lval_register;
aarch64_pseudo_write (struct gdbarch *gdbarch, struct regcache *regcache,
int regnum, const gdb_byte *buf)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
regnum -= gdbarch_num_regs (gdbarch);
if (regnum >= AARCH64_Q0_REGNUM && regnum < AARCH64_Q0_REGNUM + 32)
struct aarch64_displaced_step_data *dsd
= (struct aarch64_displaced_step_data *) data;
- aarch64_emit_insn (dsd->insn_buf, insn);
- dsd->insn_count = 1;
-
- if ((insn & 0xfffffc1f) == 0xd65f0000)
+ uint32_t masked_insn = (insn & CLEAR_Rn_MASK);
+ if (masked_insn == BLR)
{
- /* RET */
- dsd->dsc->pc_adjust = 0;
+ /* Emit a BR to the same register and then update LR to the original
+ address (similar to aarch64_displaced_step_b). */
+ aarch64_emit_insn (dsd->insn_buf, insn & 0xffdfffff);
+ regcache_cooked_write_unsigned (dsd->regs, AARCH64_LR_REGNUM,
+ data->insn_addr + 4);
}
+ else
+ aarch64_emit_insn (dsd->insn_buf, insn);
+ dsd->insn_count = 1;
+
+ if (masked_insn == RET || masked_insn == BR || masked_insn == BLR)
+ dsd->dsc->pc_adjust = 0;
else
dsd->dsc->pc_adjust = 4;
}
/* Get the correct target description for the given VQ value.
If VQ is zero then it is assumed SVE is not supported.
- (It is not possible to set VQ to zero on an SVE system). */
+ (It is not possible to set VQ to zero on an SVE system).
+
+ MTE_P indicates the presence of the Memory Tagging Extension feature. */
const target_desc *
-aarch64_read_description (uint64_t vq, bool pauth_p)
+aarch64_read_description (uint64_t vq, bool pauth_p, bool mte_p)
{
if (vq > AARCH64_MAX_SVE_VQ)
error (_("VQ is %" PRIu64 ", maximum supported value is %d"), vq,
AARCH64_MAX_SVE_VQ);
- struct target_desc *tdesc = tdesc_aarch64_list[vq][pauth_p];
+ struct target_desc *tdesc = tdesc_aarch64_list[vq][pauth_p][mte_p];
if (tdesc == NULL)
{
- tdesc = aarch64_create_target_description (vq, pauth_p);
- tdesc_aarch64_list[vq][pauth_p] = tdesc;
+ tdesc = aarch64_create_target_description (vq, pauth_p, mte_p);
+ tdesc_aarch64_list[vq][pauth_p][mte_p] = tdesc;
}
return tdesc;
static int
aarch64_cannot_store_register (struct gdbarch *gdbarch, int regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (!tdep->has_pauth ())
return 0;
bool valid_p = true;
int i, num_regs = 0, num_pseudo_regs = 0;
int first_pauth_regnum = -1, pauth_ra_state_offset = -1;
+ int first_mte_regnum = -1;
/* Use the vector length passed via the target info. Here -1 is used for no
SVE, and 0 is unset. If unset then use the vector length from the existing
best_arch != nullptr;
best_arch = gdbarch_list_lookup_by_info (best_arch->next, &info))
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (best_arch->gdbarch);
+ aarch64_gdbarch_tdep *tdep
+ = (aarch64_gdbarch_tdep *) gdbarch_tdep (best_arch->gdbarch);
if (tdep && tdep->vq == vq)
return best_arch->gdbarch;
}
value. */
const struct target_desc *tdesc = info.target_desc;
if (!tdesc_has_registers (tdesc) || vq != aarch64_get_tdesc_vq (tdesc))
- tdesc = aarch64_read_description (vq, false);
+ tdesc = aarch64_read_description (vq, false, false);
gdb_assert (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");
+ const struct tdesc_feature *feature_mte
+ = tdesc_find_feature (tdesc, "org.gnu.gdb.aarch64.mte");
if (feature_core == nullptr)
return nullptr;
num_pseudo_regs += 1; /* Count RA_STATE pseudo register. */
}
+ /* Add the MTE registers. */
+ if (feature_mte != NULL)
+ {
+ first_mte_regnum = num_regs;
+ /* Validate the descriptor provides the mandatory MTE registers and
+ allocate their numbers. */
+ for (i = 0; i < ARRAY_SIZE (aarch64_mte_register_names); i++)
+ valid_p &= tdesc_numbered_register (feature_mte, tdesc_data.get (),
+ first_mte_regnum + i,
+ aarch64_mte_register_names[i]);
+
+ num_regs += i;
+ }
+
if (!valid_p)
return nullptr;
/* AArch64 code is always little-endian. */
info.byte_order_for_code = BFD_ENDIAN_LITTLE;
- struct gdbarch_tdep *tdep = XCNEW (struct gdbarch_tdep);
+ aarch64_gdbarch_tdep *tdep = new aarch64_gdbarch_tdep;
struct gdbarch *gdbarch = gdbarch_alloc (&info, tdep);
/* This should be low enough for everything. */
tdep->pauth_reg_base = first_pauth_regnum;
tdep->pauth_ra_state_regnum = (feature_pauth == NULL) ? -1
: pauth_ra_state_offset + num_regs;
+ tdep->mte_reg_base = first_mte_regnum;
set_gdbarch_push_dummy_call (gdbarch, aarch64_push_dummy_call);
set_gdbarch_frame_align (gdbarch, aarch64_frame_align);
static void
aarch64_dump_tdep (struct gdbarch *gdbarch, struct ui_file *file)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ aarch64_gdbarch_tdep *tdep = (aarch64_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep == NULL)
return;
- fprintf_unfiltered (file, _("aarch64_dump_tdep: Lowest pc = 0x%s"),
- paddress (gdbarch, tdep->lowest_pc));
+ fprintf_filtered (file, _("aarch64_dump_tdep: Lowest pc = 0x%s"),
+ paddress (gdbarch, tdep->lowest_pc));
}
#if GDB_SELF_TEST
{ \
unsigned int mem_len = LENGTH; \
if (mem_len) \
- { \
- MEMS = XNEWVEC (struct aarch64_mem_r, mem_len); \
- memcpy(&MEMS->len, &RECORD_BUF[0], \
- sizeof(struct aarch64_mem_r) * LENGTH); \
- } \
+ { \
+ MEMS = XNEWVEC (struct aarch64_mem_r, mem_len); \
+ memcpy(MEMS, &RECORD_BUF[0], \
+ sizeof(struct aarch64_mem_r) * LENGTH); \
+ } \
} \
while (0)
static unsigned int
aarch64_record_branch_except_sys (insn_decode_record *aarch64_insn_r)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (aarch64_insn_r->gdbarch);
+
+ aarch64_gdbarch_tdep *tdep
+ = (aarch64_gdbarch_tdep *) gdbarch_tdep (aarch64_insn_r->gdbarch);
uint8_t insn_bits24_27, insn_bits28_31, insn_bits22_23;
uint32_t record_buf[4];
struct gdbarch_info info;
uint32_t ret;
- gdbarch_info_init (&info);
info.bfd_arch_info = bfd_scan_arch ("aarch64");
struct gdbarch *gdbarch = gdbarch_find_by_info (info);
ret = aarch64_record_decode_insn_handler (&aarch64_record);
if (ret == AARCH64_RECORD_UNSUPPORTED)
{
- printf_unfiltered (_("Process record does not support instruction "
- "0x%0x at address %s.\n"),
- aarch64_record.aarch64_insn,
- paddress (gdbarch, insn_addr));
+ fprintf_unfiltered (gdb_stderr,
+ _("Process record does not support instruction "
+ "0x%0x at address %s.\n"),
+ aarch64_record.aarch64_insn,
+ paddress (gdbarch, insn_addr));
ret = -1;
}
projects / binutils-gdb.git / blobdiff