X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fgdbarch.h;h=9f32ac23aba6e8afd1b2ce4ea7896c7a9fb904d6;hb=abb78b78c4184d2ac968362229adae268385a21c;hp=4845f239d18d3e09eb8c5afd99c0ffb147e1989e;hpb=53375380e934928af133bca69c1e1912c35e9c73;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h index 4845f239d1..9f32ac23ab 100644 --- a/gdb/gdbarch.h +++ b/gdb/gdbarch.h @@ -3,7 +3,7 @@ /* Dynamic architecture support for GDB, the GNU debugger. - Copyright (C) 1998-2017 Free Software Foundation, Inc. + Copyright (C) 1998-2020 Free Software Foundation, Inc. This file is part of GDB. @@ -35,8 +35,10 @@ #ifndef GDBARCH_H #define GDBARCH_H +#include #include "frame.h" #include "dis-asm.h" +#include "gdb_obstack.h" struct floatformat; struct ui_file; @@ -52,16 +54,14 @@ struct target_ops; struct obstack; struct bp_target_info; struct target_desc; -struct objfile; struct symbol; struct displaced_step_closure; struct syscall; struct agent_expr; struct axs_value; struct stap_parse_info; -struct parser_state; +struct expr_builder; struct ravenscar_arch_ops; -struct elf_internal_linux_prpsinfo; struct mem_range; struct syscalls_info; struct thread_info; @@ -92,13 +92,38 @@ typedef int (iterate_over_objfiles_in_search_order_cb_ftype) /* 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); + +/* For a function call, does the function return a value using a + normal value return or a structure return - passing a hidden + argument pointing to storage. For the latter, there are two + cases: language-mandated structure return and target ABI + structure return. */ + +enum function_call_return_method +{ + /* Standard value return. */ + return_method_normal = 0, + + /* Language ABI structure return. This is handled + by passing the return location as the first parameter to + the function, even preceding "this". */ + return_method_hidden_param, + + /* Target ABI struct return. This is target-specific; for instance, + on ia64 the first argument is passed in out0 but the hidden + structure return pointer would normally be passed in r8. */ + return_method_struct, +}; + /* The following are pre-initialized by GDBARCH. */ @@ -121,17 +146,7 @@ extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch); /* The following are initialized by the target dependent code. */ -/* The bit byte-order has to do just with numbering of bits in debugging symbols - and such. Conceptually, it's quite separate from byte/word byte order. */ - -extern int gdbarch_bits_big_endian (struct gdbarch *gdbarch); -extern void set_gdbarch_bits_big_endian (struct gdbarch *gdbarch, int bits_big_endian); - -/* Number of bits in a char or unsigned char for the target machine. - Just like CHAR_BIT in but describes the target machine. - v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0: - - Number of bits in a short or unsigned short for the target machine. */ +/* Number of bits in a short or unsigned short for the target machine. */ extern int gdbarch_short_bit (struct gdbarch *gdbarch); extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit); @@ -152,12 +167,6 @@ extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit); 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. @@ -250,8 +259,8 @@ extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed); 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); @@ -270,8 +279,8 @@ extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *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 @@ -281,8 +290,8 @@ extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_p 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); @@ -388,7 +397,14 @@ typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, in extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr); extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type); -extern int gdbarch_dummy_id_p (struct gdbarch *gdbarch); +/* Generate a dummy frame_id for THIS_FRAME assuming that the frame is + a dummy frame. A dummy frame is created before an inferior call, + the frame_id returned here must match the frame_id that was built + for the inferior call. Usually this means the returned frame_id's + stack address should match the address returned by + gdbarch_push_dummy_call, and the returned frame_id's code address + should match the address at which the breakpoint was set in the dummy + frame. */ typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *this_frame); extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame); @@ -402,8 +418,8 @@ extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int depre extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch); -typedef CORE_ADDR (gdbarch_push_dummy_call_ftype) (struct gdbarch *gdbarch, struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr); -extern CORE_ADDR gdbarch_push_dummy_call (struct gdbarch *gdbarch, struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr); +typedef CORE_ADDR (gdbarch_push_dummy_call_ftype) (struct gdbarch *gdbarch, struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, function_call_return_method return_method, CORE_ADDR struct_addr); +extern CORE_ADDR gdbarch_push_dummy_call (struct gdbarch *gdbarch, struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, function_call_return_method return_method, CORE_ADDR struct_addr); extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call); extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch); @@ -627,17 +643,25 @@ typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile); extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address); +/* Return the thread-local address at OFFSET in the thread-local + storage for the thread PTID and the shared library or executable + file given by LM_ADDR. If that block of thread-local storage hasn't + been allocated yet, this function may throw an error. LM_ADDR may + be zero for statically linked multithreaded inferiors. */ + +extern int gdbarch_get_thread_local_address_p (struct gdbarch *gdbarch); + +typedef CORE_ADDR (gdbarch_get_thread_local_address_ftype) (struct gdbarch *gdbarch, ptid_t ptid, CORE_ADDR lm_addr, CORE_ADDR offset); +extern CORE_ADDR gdbarch_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid, CORE_ADDR lm_addr, CORE_ADDR offset); +extern void set_gdbarch_get_thread_local_address (struct gdbarch *gdbarch, gdbarch_get_thread_local_address_ftype *get_thread_local_address); + extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch); extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip); -extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch); - typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame); extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame); extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc); -extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch); - typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame); extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame); extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp); @@ -682,6 +706,14 @@ typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (struct gdbarch *gdbarch, COR 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. @@ -700,8 +732,8 @@ extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_ extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch); -typedef VEC (CORE_ADDR) * (gdbarch_software_single_step_ftype) (struct regcache *regcache); -extern VEC (CORE_ADDR) * gdbarch_software_single_step (struct gdbarch *gdbarch, struct regcache *regcache); +typedef std::vector (gdbarch_software_single_step_ftype) (struct regcache *regcache); +extern std::vector gdbarch_software_single_step (struct gdbarch *gdbarch, struct regcache *regcache); extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step); /* Return non-zero if the processor is executing a delay slot and a @@ -738,6 +770,12 @@ typedef int (gdbarch_in_solib_return_trampoline_ftype) (struct gdbarch *gdbarch, 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() @@ -812,6 +850,9 @@ extern void set_gdbarch_adjust_dwarf2_line (struct gdbarch *gdbarch, gdbarch_adj 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); @@ -827,6 +868,13 @@ typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gd extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags); extern void set_gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_to_name_ftype *address_class_type_flags_to_name); +/* Execute vendor-specific DWARF Call Frame Instruction. OP is the instruction. + FS are passed from the generic execute_cfa_program function. */ + +typedef bool (gdbarch_execute_dwarf_cfa_vendor_op_ftype) (struct gdbarch *gdbarch, gdb_byte op, struct dwarf2_frame_state *fs); +extern bool gdbarch_execute_dwarf_cfa_vendor_op (struct gdbarch *gdbarch, gdb_byte op, struct dwarf2_frame_state *fs); +extern void set_gdbarch_execute_dwarf_cfa_vendor_op (struct gdbarch *gdbarch, gdbarch_execute_dwarf_cfa_vendor_op_ftype *execute_dwarf_cfa_vendor_op); + /* Return the appropriate type_flags for the supplied address class. This function should return 1 if the address class was recognized and type_flags was set, zero otherwise. */ @@ -872,18 +920,6 @@ typedef char * (gdbarch_make_corefile_notes_ftype) (struct gdbarch *gdbarch, bfd extern char * gdbarch_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size); extern void set_gdbarch_make_corefile_notes (struct gdbarch *gdbarch, gdbarch_make_corefile_notes_ftype *make_corefile_notes); -/* The elfcore writer hook to use to write Linux prpsinfo notes to core - files. Most Linux architectures use the same prpsinfo32 or - prpsinfo64 layouts, and so won't need to provide this hook, as we - call the Linux generic routines in bfd to write prpsinfo notes by - default. */ - -extern int gdbarch_elfcore_write_linux_prpsinfo_p (struct gdbarch *gdbarch); - -typedef char * (gdbarch_elfcore_write_linux_prpsinfo_ftype) (bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info); -extern char * gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info); -extern void set_gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, gdbarch_elfcore_write_linux_prpsinfo_ftype *elfcore_write_linux_prpsinfo); - /* Find core file memory regions */ extern int gdbarch_find_memory_regions_p (struct gdbarch *gdbarch); @@ -917,8 +953,8 @@ extern void set_gdbarch_core_xfer_shared_libraries_aix (struct gdbarch *gdbarch, extern int gdbarch_core_pid_to_str_p (struct gdbarch *gdbarch); -typedef const char * (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid); -extern const char * gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid); +typedef std::string (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid); +extern std::string gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid); extern void set_gdbarch_core_pid_to_str (struct gdbarch *gdbarch, gdbarch_core_pid_to_str_ftype *core_pid_to_str); /* How the core target extracts the name of a thread from a core file. */ @@ -929,6 +965,16 @@ typedef const char * (gdbarch_core_thread_name_ftype) (struct gdbarch *gdbarch, extern const char * gdbarch_core_thread_name (struct gdbarch *gdbarch, struct thread_info *thr); extern void set_gdbarch_core_thread_name (struct gdbarch *gdbarch, gdbarch_core_thread_name_ftype *core_thread_name); +/* Read offset OFFSET of TARGET_OBJECT_SIGNAL_INFO signal information + from core file into buffer READBUF with length LEN. Return the number + of bytes read (zero indicates EOF, a negative value indicates failure). */ + +extern int gdbarch_core_xfer_siginfo_p (struct gdbarch *gdbarch); + +typedef LONGEST (gdbarch_core_xfer_siginfo_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len); +extern LONGEST gdbarch_core_xfer_siginfo (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len); +extern void set_gdbarch_core_xfer_siginfo (struct gdbarch *gdbarch, gdbarch_core_xfer_siginfo_ftype *core_xfer_siginfo); + /* BFD target to use when generating a core file. */ extern int gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch); @@ -984,10 +1030,6 @@ extern void set_gdbarch_max_insn_length (struct gdbarch *gdbarch, ULONGEST max_i If you do not provide this function, GDB assumes that the architecture does not support displaced stepping. - If your architecture doesn't need to adjust instructions before - single-stepping them, consider using simple_displaced_step_copy_insn - here. - If the instruction cannot execute out of line, return NULL. The core falls back to stepping past the instruction in-line instead in that case. */ @@ -1035,21 +1077,6 @@ typedef void (gdbarch_displaced_step_fixup_ftype) (struct gdbarch *gdbarch, stru extern void gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs); extern void set_gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, gdbarch_displaced_step_fixup_ftype *displaced_step_fixup); -/* Free a closure returned by gdbarch_displaced_step_copy_insn. - - If you provide gdbarch_displaced_step_copy_insn, you must provide - this function as well. - - If your architecture uses closures that don't need to be freed, then - you can use simple_displaced_step_free_closure here. - - For a general explanation of displaced stepping and how GDB uses it, - see the comments in infrun.c. */ - -typedef void (gdbarch_displaced_step_free_closure_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure); -extern void gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, struct displaced_step_closure *closure); -extern void set_gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, gdbarch_displaced_step_free_closure_ftype *displaced_step_free_closure); - /* Return the address of an appropriate place to put displaced instructions while we step over them. There need only be one such place, since we're only stepping one thread over a breakpoint at a @@ -1178,8 +1205,8 @@ extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_ 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. */ @@ -1317,14 +1344,44 @@ typedef int (gdbarch_stap_parse_special_token_ftype) (struct gdbarch *gdbarch, s extern int gdbarch_stap_parse_special_token (struct gdbarch *gdbarch, struct stap_parse_info *p); extern void set_gdbarch_stap_parse_special_token (struct gdbarch *gdbarch, gdbarch_stap_parse_special_token_ftype *stap_parse_special_token); +/* Perform arch-dependent adjustments to a register name. + + In very specific situations, it may be necessary for the register + name present in a SystemTap probe's argument to be handled in a + special way. For example, on i386, GCC may over-optimize the + register allocation and use smaller registers than necessary. In + such cases, the client that is reading and evaluating the SystemTap + probe (ourselves) will need to actually fetch values from the wider + version of the register in question. + + To illustrate the example, consider the following probe argument + (i386): + + 4@%ax + + This argument says that its value can be found at the %ax register, + which is a 16-bit register. However, the argument's prefix says + that its type is "uint32_t", which is 32-bit in size. Therefore, in + this case, GDB should actually fetch the probe's value from register + %eax, not %ax. In this scenario, this function would actually + replace the register name from %ax to %eax. + + The rationale for this can be found at PR breakpoints/24541. */ + +extern int gdbarch_stap_adjust_register_p (struct gdbarch *gdbarch); + +typedef std::string (gdbarch_stap_adjust_register_ftype) (struct gdbarch *gdbarch, struct stap_parse_info *p, const std::string ®name, int regnum); +extern std::string gdbarch_stap_adjust_register (struct gdbarch *gdbarch, struct stap_parse_info *p, const std::string ®name, int regnum); +extern void set_gdbarch_stap_adjust_register (struct gdbarch *gdbarch, gdbarch_stap_adjust_register_ftype *stap_adjust_register); + /* DTrace related functions. The expression to compute the NARTGth+1 argument to a DTrace USDT probe. NARG must be >= 0. */ extern int gdbarch_dtrace_parse_probe_argument_p (struct gdbarch *gdbarch); -typedef void (gdbarch_dtrace_parse_probe_argument_ftype) (struct gdbarch *gdbarch, struct parser_state *pstate, int narg); -extern void gdbarch_dtrace_parse_probe_argument (struct gdbarch *gdbarch, struct parser_state *pstate, int narg); +typedef void (gdbarch_dtrace_parse_probe_argument_ftype) (struct gdbarch *gdbarch, struct expr_builder *builder, int narg); +extern void gdbarch_dtrace_parse_probe_argument (struct gdbarch *gdbarch, struct expr_builder *builder, int narg); extern void set_gdbarch_dtrace_parse_probe_argument (struct gdbarch *gdbarch, gdbarch_dtrace_parse_probe_argument_ftype *dtrace_parse_probe_argument); /* True if the given ADDR does not contain the instruction sequence @@ -1377,8 +1434,8 @@ extern void set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch, gdbar /* 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 @@ -1533,10 +1590,10 @@ extern void set_gdbarch_infcall_munmap (struct gdbarch *gdbarch, gdbarch_infcall /* Return string (caller has to use xfree for it) with options for GCC to produce code for this target, typically "-m64", "-m32" or "-m31". These options are put before CU's DW_AT_producer compilation options so that - they can override it. Method may also return NULL. */ + they can override it. */ -typedef char * (gdbarch_gcc_target_options_ftype) (struct gdbarch *gdbarch); -extern char * gdbarch_gcc_target_options (struct gdbarch *gdbarch); +typedef std::string (gdbarch_gcc_target_options_ftype) (struct gdbarch *gdbarch); +extern std::string gdbarch_gcc_target_options (struct gdbarch *gdbarch); extern void set_gdbarch_gcc_target_options (struct gdbarch *gdbarch, gdbarch_gcc_target_options_ftype *gcc_target_options); /* Return a regular expression that matches names used by this @@ -1559,14 +1616,29 @@ extern void set_gdbarch_addressable_memory_unit_size (struct gdbarch *gdbarch, g /* 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 override method. Return the architecture specific + alignment required for TYPE. If there is no special handling + required for TYPE then return the value 0, GDB will then apply the + default rules as laid out in gdbtypes.c:type_align. */ + +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) +/* Return a string containing any flags for the given PC in the given FRAME. */ + +typedef std::string (gdbarch_get_pc_address_flags_ftype) (frame_info *frame, CORE_ADDR pc); +extern std::string gdbarch_get_pc_address_flags (struct gdbarch *gdbarch, frame_info *frame, CORE_ADDR pc); +extern void set_gdbarch_get_pc_address_flags (struct gdbarch *gdbarch, gdbarch_get_pc_address_flags_ftype *get_pc_address_flags); extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch); @@ -1648,7 +1720,21 @@ struct gdbarch_info bfd *abfd; /* Use default: NULL (ZERO). */ - void *tdep_info; + union + { + /* Architecture-specific information. The generic form for targets + that have extra requirements. */ + struct gdbarch_tdep_info *tdep_info; + + /* Architecture-specific target description data. Numerous targets + need only this, so give them an easy way to hold it. */ + struct tdesc_arch_data *tdesc_data; + + /* SPU file system ID. This is a single integer, so using the + generic form would only complicate code. Other targets may + reuse this member if suitable. */ + int *id; + }; /* Use default: GDB_OSABI_UNINITIALIZED (-1). */ enum gdb_osabi osabi; @@ -1696,14 +1782,17 @@ extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gd 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 (gdbarch_obstack ((GDBARCH)), (NR)) + +#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) obstack_zalloc (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 @@ -1785,4 +1874,12 @@ extern unsigned int gdbarch_debug; 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