/* Dynamic architecture support for GDB, the GNU debugger.
- Copyright (C) 1998-2017 Free Software Foundation, Inc.
+ Copyright (C) 1998-2018 Free Software Foundation, Inc.
This file is part of GDB.
#include <vector>
#include "frame.h"
#include "dis-asm.h"
+#include "gdb_obstack.h"
struct floatformat;
struct ui_file;
/* Callback type for regset section iterators. The callback usually
invokes the REGSET's supply or collect method, to which it must
- pass a buffer with at least the given SIZE. SECT_NAME is a BFD
- section name, and HUMAN_NAME is used for diagnostic messages.
- CB_DATA should have been passed unchanged through the iterator. */
+ pass a buffer - for collects this buffer will need to be created using
+ COLLECT_SIZE, for supply the existing buffer being read from should
+ be at least SUPPLY_SIZE. SECT_NAME is a BFD section name, and HUMAN_NAME
+ is used for diagnostic messages. CB_DATA should have been passed
+ unchanged through the iterator. */
typedef void (iterate_over_regset_sections_cb)
- (const char *sect_name, int size, const struct regset *regset,
- const char *human_name, void *cb_data);
+ (const char *sect_name, int supply_size, int collect_size,
+ const struct regset *regset, const char *human_name, void *cb_data);
/* The following are pre-initialized by GDBARCH. */
extern int gdbarch_long_long_bit (struct gdbarch *gdbarch);
extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit);
-/* Alignment of a long long or unsigned long long for the target
- machine. */
-
-extern int gdbarch_long_long_align_bit (struct gdbarch *gdbarch);
-extern void set_gdbarch_long_long_align_bit (struct gdbarch *gdbarch, int long_long_align_bit);
-
/* The ABI default bit-size and format for "half", "float", "double", and
"long double". These bit/format pairs should eventually be combined
into a single object. For the moment, just initialize them as a pair.
extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);
-typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
-extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
+typedef CORE_ADDR (gdbarch_read_pc_ftype) (readable_regcache *regcache);
+extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, readable_regcache *regcache);
extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);
extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);
extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch);
-typedef enum register_status (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
-extern enum register_status gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
+typedef enum register_status (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, readable_regcache *regcache, int cookednum, gdb_byte *buf);
+extern enum register_status gdbarch_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache, int cookednum, gdb_byte *buf);
extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read);
/* Read a register into a new struct value. If the register is wholly
extern int gdbarch_pseudo_register_read_value_p (struct gdbarch *gdbarch);
-typedef struct value * (gdbarch_pseudo_register_read_value_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum);
-extern struct value * gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum);
+typedef struct value * (gdbarch_pseudo_register_read_value_ftype) (struct gdbarch *gdbarch, readable_regcache *regcache, int cookednum);
+extern struct value * gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, readable_regcache *regcache, int cookednum);
extern void set_gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_value_ftype *pseudo_register_read_value);
extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch);
extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr);
extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove);
+/* On some machines, not all bits of an address word are significant.
+ For example, on AArch64, the top bits of an address known as the "tag"
+ are ignored by the kernel, the hardware, etc. and can be regarded as
+ additional data associated with the address. */
+
+extern int gdbarch_significant_addr_bit (struct gdbarch *gdbarch);
+extern void set_gdbarch_significant_addr_bit (struct gdbarch *gdbarch, int significant_addr_bit);
+
/* FIXME/cagney/2001-01-18: This should be split in two. A target method that
indicates if the target needs software single step. An ISA method to
implement it.
extern int gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, const char *name);
extern void set_gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, gdbarch_in_solib_return_trampoline_ftype *in_solib_return_trampoline);
+/* Return true if PC lies inside an indirect branch thunk. */
+
+typedef bool (gdbarch_in_indirect_branch_thunk_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc);
+extern bool gdbarch_in_indirect_branch_thunk (struct gdbarch *gdbarch, CORE_ADDR pc);
+extern void set_gdbarch_in_indirect_branch_thunk (struct gdbarch *gdbarch, gdbarch_in_indirect_branch_thunk_ftype *in_indirect_branch_thunk);
+
/* A target might have problems with watchpoints as soon as the stack
frame of the current function has been destroyed. This mostly happens
as the first action in a function's epilogue. stack_frame_destroyed_p()
extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch);
extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint);
+/* See comment in target.h about continuable, steppable and
+ non-steppable watchpoints. */
+
extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch);
extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint);
extern int gdbarch_get_syscall_number_p (struct gdbarch *gdbarch);
-typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
-extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid);
+typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, thread_info *thread);
+extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread);
extern void set_gdbarch_get_syscall_number (struct gdbarch *gdbarch, gdbarch_get_syscall_number_ftype *get_syscall_number);
/* The filename of the XML syscall for this architecture. */
/* True if a fast tracepoint can be set at an address. */
-typedef int (gdbarch_fast_tracepoint_valid_at_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, char **msg);
-extern int gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, char **msg);
+typedef int (gdbarch_fast_tracepoint_valid_at_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, std::string *msg);
+extern int gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, std::string *msg);
extern void set_gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, gdbarch_fast_tracepoint_valid_at_ftype *fast_tracepoint_valid_at);
/* Guess register state based on tracepoint location. Used for tracepoints
/* Functions for allowing a target to modify its disassembler options. */
+extern const char * gdbarch_disassembler_options_implicit (struct gdbarch *gdbarch);
+extern void set_gdbarch_disassembler_options_implicit (struct gdbarch *gdbarch, const char * disassembler_options_implicit);
+
extern char ** gdbarch_disassembler_options (struct gdbarch *gdbarch);
extern void set_gdbarch_disassembler_options (struct gdbarch *gdbarch, char ** disassembler_options);
-extern const disasm_options_t * gdbarch_valid_disassembler_options (struct gdbarch *gdbarch);
-extern void set_gdbarch_valid_disassembler_options (struct gdbarch *gdbarch, const disasm_options_t * valid_disassembler_options);
+extern const disasm_options_and_args_t * gdbarch_valid_disassembler_options (struct gdbarch *gdbarch);
+extern void set_gdbarch_valid_disassembler_options (struct gdbarch *gdbarch, const disasm_options_and_args_t * valid_disassembler_options);
+
+/* Type alignment. */
+
+typedef ULONGEST (gdbarch_type_align_ftype) (struct gdbarch *gdbarch, struct type *type);
+extern ULONGEST gdbarch_type_align (struct gdbarch *gdbarch, struct type *type);
+extern void set_gdbarch_type_align (struct gdbarch *gdbarch, gdbarch_type_align_ftype *type_align);
/* Definition for an unknown syscall, used basically in error-cases. */
#define UNKNOWN_SYSCALL (-1)
extern void gdbarch_free (struct gdbarch *);
+/* Get the obstack owned by ARCH. */
+
+extern obstack *gdbarch_obstack (gdbarch *arch);
/* Helper function. Allocate memory from the ``struct gdbarch''
obstack. The memory is freed when the corresponding architecture
is also freed. */
-extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
-#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
-#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
+#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) obstack_calloc<TYPE> (gdbarch_obstack ((GDBARCH)), (NR))
+
+#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) obstack_zalloc<TYPE> (gdbarch_obstack ((GDBARCH)))
/* Duplicate STRING, returning an equivalent string that's allocated on the
obstack associated with GDBARCH. The string is freed when the corresponding
extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
+/* Return the number of cooked registers (raw + pseudo) for ARCH. */
+
+static inline int
+gdbarch_num_cooked_regs (gdbarch *arch)
+{
+ return gdbarch_num_regs (arch) + gdbarch_num_pseudo_regs (arch);
+}
+
#endif
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