X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fd10v-tdep.c;h=93236a350fecd66bfb3f6c21d8cb618ce74e9c7c;hb=0ba6dca974b6df1fc1ac67608815cf5a2603856d;hp=8001d46b184a11d3b7c72c26c6210eb790e2c014;hpb=6c2b51687c9bf6de1c6bd8b17bbae9255da6f064;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/d10v-tdep.c b/gdb/d10v-tdep.c index 8001d46b18..93236a350f 100644 --- a/gdb/d10v-tdep.c +++ b/gdb/d10v-tdep.c @@ -25,6 +25,7 @@ #include "defs.h" #include "frame.h" #include "frame-unwind.h" +#include "frame-base.h" #include "symtab.h" #include "gdbtypes.h" #include "gdbcmd.h" @@ -70,7 +71,7 @@ enum R3_REGNUM = 3, D10V_FP_REGNUM = 11, LR_REGNUM = 13, - _SP_REGNUM = 15, + D10V_SP_REGNUM = 15, PSW_REGNUM = 16, _PC_REGNUM = 18, NR_IMAP_REGS = 2, @@ -83,8 +84,17 @@ enum RET1_REGNUM = R0_REGNUM, }; -#define NR_DMAP_REGS (gdbarch_tdep (current_gdbarch)->nr_dmap_regs) -#define A0_REGNUM (gdbarch_tdep (current_gdbarch)->a0_regnum) +int +nr_dmap_regs (struct gdbarch *gdbarch) +{ + return gdbarch_tdep (gdbarch)->nr_dmap_regs; +} + +int +a0_regnum (struct gdbarch *gdbarch) +{ + return gdbarch_tdep (gdbarch)->a0_regnum; +} /* Local functions */ @@ -92,8 +102,6 @@ extern void _initialize_d10v_tdep (void); static CORE_ADDR d10v_read_sp (void); -static CORE_ADDR d10v_read_fp (void); - static void d10v_eva_prepare_to_trace (void); static void d10v_eva_get_trace_data (void); @@ -306,37 +314,6 @@ d10v_ts3_register_sim_regno (int nr) return nr; } -/* Index within `registers' of the first byte of the space for - register REG_NR. */ - -static int -d10v_register_byte (int reg_nr) -{ - if (reg_nr < A0_REGNUM) - return (reg_nr * 2); - else if (reg_nr < (A0_REGNUM + NR_A_REGS)) - return (A0_REGNUM * 2 - + (reg_nr - A0_REGNUM) * 8); - else - return (A0_REGNUM * 2 - + NR_A_REGS * 8 - + (reg_nr - A0_REGNUM - NR_A_REGS) * 2); -} - -/* Number of bytes of storage in the actual machine representation for - register REG_NR. */ - -static int -d10v_register_raw_size (int reg_nr) -{ - if (reg_nr < A0_REGNUM) - return 2; - else if (reg_nr < (A0_REGNUM + NR_A_REGS)) - return 8; - else - return 2; -} - /* Return the GDB type object for the "standard" data type of data in register N. */ @@ -345,10 +322,10 @@ d10v_register_type (struct gdbarch *gdbarch, int reg_nr) { if (reg_nr == PC_REGNUM) return builtin_type_void_func_ptr; - if (reg_nr == _SP_REGNUM || reg_nr == D10V_FP_REGNUM) + if (reg_nr == D10V_SP_REGNUM || reg_nr == D10V_FP_REGNUM) return builtin_type_void_data_ptr; - else if (reg_nr >= A0_REGNUM - && reg_nr < (A0_REGNUM + NR_A_REGS)) + else if (reg_nr >= a0_regnum (gdbarch) + && reg_nr < (a0_regnum (gdbarch) + NR_A_REGS)) return builtin_type_int64; else return builtin_type_int16; @@ -414,8 +391,7 @@ d10v_address_to_pointer (struct type *type, void *buf, CORE_ADDR addr) static CORE_ADDR d10v_pointer_to_address (struct type *type, const void *buf) { - CORE_ADDR addr = extract_address (buf, TYPE_LENGTH (type)); - + CORE_ADDR addr = extract_unsigned_integer (buf, TYPE_LENGTH (type)); /* Is it a code address? */ if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD @@ -487,17 +463,6 @@ d10v_extract_struct_value_address (struct regcache *regcache) return (addr | DMEM_START); } -/* Immediately after a function call, return the saved pc. We can't - use frame->return_pc beause that is determined by reading R13 off - the stack and that may not be written yet. */ - -static CORE_ADDR -d10v_saved_pc_after_call (struct frame_info *frame) -{ - return ((read_register (LR_REGNUM) << 2) - | IMEM_START); -} - static int check_prologue (unsigned short op) { @@ -598,7 +563,10 @@ d10v_skip_prologue (CORE_ADDR pc) struct d10v_unwind_cache { CORE_ADDR return_pc; - /* The frame's base. Used when constructing a frame ID. */ + /* The previous frame's inner most stack address. Used as this + frame ID's stack_addr. */ + CORE_ADDR prev_sp; + /* The frame's base, optionally used by the high-level debug info. */ CORE_ADDR base; int size; CORE_ADDR *saved_regs; @@ -709,16 +677,16 @@ d10v_frame_unwind_cache (struct frame_info *next_frame, info = FRAME_OBSTACK_ZALLOC (struct d10v_unwind_cache); (*this_prologue_cache) = info; - info->saved_regs = frame_obstack_zalloc (SIZEOF_FRAME_SAVED_REGS); + info->saved_regs = FRAME_OBSTACK_CALLOC (NUM_REGS, CORE_ADDR); info->size = 0; info->return_pc = 0; info->sp_offset = 0; - pc = get_pc_function_start (frame_pc_unwind (next_frame)); - info->uses_frame = 0; - while (1) + for (pc = frame_func_unwind (next_frame); + pc > 0 && pc < frame_pc_unwind (next_frame); + pc += 4) { op = (unsigned long) read_memory_integer (pc, 4); if ((op & 0xC0000000) == 0xC0000000) @@ -765,7 +733,6 @@ d10v_frame_unwind_cache (struct frame_info *next_frame, || !prologue_find_regs (info, op2, pc)) break; } - pc += 4; } info->size = -info->sp_offset; @@ -781,32 +748,32 @@ d10v_frame_unwind_cache (struct frame_info *next_frame, to before the first saved register giving the SP. */ prev_sp = this_base + info->size; } - else if (info->saved_regs[SP_REGNUM]) + else if (info->saved_regs[D10V_SP_REGNUM]) { /* The SP was saved (which is very unusual), the frame base is just the PREV's frame's TOP-OF-STACK. */ - this_base = read_memory_unsigned_integer (info->saved_regs[SP_REGNUM], + this_base = read_memory_unsigned_integer (info->saved_regs[D10V_SP_REGNUM], register_size (current_gdbarch, - SP_REGNUM)); + D10V_SP_REGNUM)); prev_sp = this_base; } else { /* Assume that the FP is this frame's SP but with that pushed stack space added back. */ - frame_unwind_unsigned_register (next_frame, SP_REGNUM, &this_base); + frame_unwind_unsigned_register (next_frame, D10V_SP_REGNUM, &this_base); prev_sp = this_base + info->size; } info->base = d10v_make_daddr (this_base); - prev_sp = d10v_make_daddr (prev_sp); + info->prev_sp = d10v_make_daddr (prev_sp); /* Adjust all the saved registers so that they contain addresses and not offsets. */ for (i = 0; i < NUM_REGS - 1; i++) if (info->saved_regs[i]) { - info->saved_regs[i] = (prev_sp + info->saved_regs[i]); + info->saved_regs[i] = (info->prev_sp + info->saved_regs[i]); } if (info->saved_regs[LR_REGNUM]) @@ -823,9 +790,9 @@ d10v_frame_unwind_cache (struct frame_info *next_frame, info->return_pc = d10v_make_iaddr (return_pc); } - /* The SP_REGNUM is special. Instead of the address of the SP, the + /* The D10V_SP_REGNUM is special. Instead of the address of the SP, the previous frame's SP value is saved. */ - info->saved_regs[SP_REGNUM] = prev_sp; + info->saved_regs[D10V_SP_REGNUM] = info->prev_sp; return info; } @@ -879,12 +846,12 @@ d10v_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, fprintf_filtered (file, " "); fprintf_filtered (file, "IMAP%d %04lx", a, d10v_imap_register (a)); } - if (NR_DMAP_REGS == 1) + if (nr_dmap_regs (gdbarch) == 1) /* Registers DMAP0 and DMAP1 are constant. Just return dmap2. */ fprintf_filtered (file, " DMAP %04lx\n", d10v_dmap_register (2)); else { - for (a = 0; a < NR_DMAP_REGS; a++) + for (a = 0; a < nr_dmap_regs (gdbarch); a++) { fprintf_filtered (file, " DMAP%d %04lx", a, d10v_dmap_register (a)); } @@ -896,12 +863,12 @@ d10v_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, char *num = alloca (max_register_size (gdbarch)); int a; fprintf_filtered (file, "A0-A%d", NR_A_REGS - 1); - for (a = A0_REGNUM; a < A0_REGNUM + NR_A_REGS; a++) + for (a = a0_regnum (gdbarch); a < a0_regnum (gdbarch) + NR_A_REGS; a++) { int i; fprintf_filtered (file, " "); - frame_register_read (frame, a, num); - for (i = 0; i < max_register_size (current_gdbarch); i++) + frame_read_register (frame, a, num); + for (i = 0; i < register_size (current_gdbarch, a); i++) { fprintf_filtered (file, "%02x", (num[i] & 0xff)); } @@ -946,13 +913,7 @@ d10v_write_pc (CORE_ADDR val, ptid_t ptid) static CORE_ADDR d10v_read_sp (void) { - return (d10v_make_daddr (read_register (SP_REGNUM))); -} - -static CORE_ADDR -d10v_read_fp (void) -{ - return (d10v_make_daddr (read_register (D10V_FP_REGNUM))); + return (d10v_make_daddr (read_register (D10V_SP_REGNUM))); } /* When arguments must be pushed onto the stack, they go on in reverse @@ -1064,7 +1025,7 @@ d10v_push_dummy_call (struct gdbarch *gdbarch, struct regcache *regcache, } /* Finally, update the SP register. */ - regcache_cooked_write_unsigned (regcache, SP_REGNUM, + regcache_cooked_write_unsigned (regcache, D10V_SP_REGNUM, d10v_convert_daddr_to_raw (sp)); return sp; @@ -1079,12 +1040,6 @@ d10v_extract_return_value (struct type *type, struct regcache *regcache, void *valbuf) { int len; -#if 0 - printf("RET: TYPE=%d len=%d r%d=0x%x\n", TYPE_CODE (type), - TYPE_LENGTH (type), RET1_REGNUM - R0_REGNUM, - (int) extract_unsigned_integer (regbuf + REGISTER_BYTE(RET1_REGNUM), - register_size (current_gdbarch, RET1_REGNUM))); -#endif if (TYPE_LENGTH (type) == 1) { ULONGEST c; @@ -1203,9 +1158,9 @@ trace_command (char *args, int from_tty) /* Clear the host-side trace buffer, allocating space if needed. */ trace_data.size = 0; if (trace_data.counts == NULL) - trace_data.counts = (short *) xmalloc (65536 * sizeof (short)); + trace_data.counts = XCALLOC (65536, short); if (trace_data.addrs == NULL) - trace_data.addrs = (CORE_ADDR *) xmalloc (65536 * sizeof (CORE_ADDR)); + trace_data.addrs = XCALLOC (65536, CORE_ADDR); tracing = 1; @@ -1244,24 +1199,6 @@ trace_info (char *args, int from_tty) printf_filtered ("Tracing is currently %s.\n", (tracing ? "on" : "off")); } -/* Print the instruction at address MEMADDR in debugged memory, - on STREAM. Returns length of the instruction, in bytes. */ - -static int -print_insn (CORE_ADDR memaddr, struct ui_file *stream) -{ - /* If there's no disassembler, something is very wrong. */ - if (tm_print_insn == NULL) - internal_error (__FILE__, __LINE__, - "print_insn: no disassembler"); - - if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) - tm_print_insn_info.endian = BFD_ENDIAN_BIG; - else - tm_print_insn_info.endian = BFD_ENDIAN_LITTLE; - return TARGET_PRINT_INSN (memaddr, &tm_print_insn_info); -} - static void d10v_eva_prepare_to_trace (void) { @@ -1422,7 +1359,8 @@ display_trace (int low, int high) printf_filtered (":"); printf_filtered ("\t"); wrap_here (" "); - next_address = next_address + print_insn (next_address, gdb_stdout); + next_address += TARGET_PRINT_INSN (next_address, + &tm_print_insn_info); printf_filtered ("\n"); gdb_flush (gdb_stdout); } @@ -1448,38 +1386,36 @@ d10v_frame_this_id (struct frame_info *next_frame, struct d10v_unwind_cache *info = d10v_frame_unwind_cache (next_frame, this_prologue_cache); CORE_ADDR base; - CORE_ADDR pc; - - /* Start with a NULL frame ID. */ - (*this_id) = null_frame_id; + CORE_ADDR func; + struct frame_id id; - /* The PC is easy. */ - pc = frame_pc_unwind (next_frame); + /* The FUNC is easy. */ + func = frame_func_unwind (next_frame); /* This is meant to halt the backtrace at "_start". Make sure we don't halt it at a generic dummy frame. */ - if (pc == IMEM_START || pc <= IMEM_START || inside_entry_file (pc)) + if (func <= IMEM_START || inside_entry_file (func)) return; /* Hopefully the prologue analysis either correctly determined the frame's base (which is the SP from the previous frame), or set that base to "NULL". */ - base = info->base; + base = info->prev_sp; if (base == STACK_START || base == 0) return; + id = frame_id_build (base, func); + /* Check that we're not going round in circles with the same frame ID (but avoid applying the test to sentinel frames which do go round in circles). Can't use frame_id_eq() as that doesn't yet compare the frame's PC value. */ if (frame_relative_level (next_frame) >= 0 && get_frame_type (next_frame) != DUMMY_FRAME - && get_frame_id (next_frame).pc == pc - && get_frame_id (next_frame).base == base) + && frame_id_eq (get_frame_id (next_frame), id)) return; - this_id->base = base; - this_id->pc = pc; + (*this_id) = id; } static void @@ -1491,7 +1427,7 @@ saved_regs_unwinder (struct frame_info *next_frame, { if (this_saved_regs[regnum] != 0) { - if (regnum == SP_REGNUM) + if (regnum == D10V_SP_REGNUM) { /* SP register treated specially. */ *optimizedp = 0; @@ -1499,8 +1435,9 @@ saved_regs_unwinder (struct frame_info *next_frame, *addrp = 0; *realnump = -1; if (bufferp != NULL) - store_address (bufferp, register_size (current_gdbarch, regnum), - this_saved_regs[regnum]); + store_unsigned_integer (bufferp, + register_size (current_gdbarch, regnum), + this_saved_regs[regnum]); } else { @@ -1553,8 +1490,8 @@ d10v_frame_prev_register (struct frame_info *next_frame, } } - -static struct frame_unwind d10v_frame_unwind = { +static const struct frame_unwind d10v_frame_unwind = { + NORMAL_FRAME, d10v_frame_this_id, d10v_frame_prev_register }; @@ -1565,6 +1502,21 @@ d10v_frame_p (CORE_ADDR pc) return &d10v_frame_unwind; } +static CORE_ADDR +d10v_frame_base_address (struct frame_info *next_frame, void **this_cache) +{ + struct d10v_unwind_cache *info + = d10v_frame_unwind_cache (next_frame, this_cache); + return info->base; +} + +static const struct frame_base d10v_frame_base = { + &d10v_frame_unwind, + d10v_frame_base_address, + d10v_frame_base_address, + d10v_frame_base_address +}; + /* Assuming NEXT_FRAME->prev is a dummy, return the frame ID of that dummy frame. The frame ID's base needs to match the TOS value saved by save_dummy_frame_tos(), and the PC match the dummy frame's @@ -1574,11 +1526,8 @@ static struct frame_id d10v_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame) { ULONGEST base; - struct frame_id id; - id.pc = frame_pc_unwind (next_frame); - frame_unwind_unsigned_register (next_frame, SP_REGNUM, &base); - id.base = d10v_make_daddr (base); - return id; + frame_unwind_unsigned_register (next_frame, D10V_SP_REGNUM, &base); + return frame_id_build (d10v_make_daddr (base), frame_pc_unwind (next_frame)); } static gdbarch_init_ftype d10v_gdbarch_init; @@ -1627,17 +1576,14 @@ d10v_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_read_pc (gdbarch, d10v_read_pc); set_gdbarch_write_pc (gdbarch, d10v_write_pc); - set_gdbarch_read_fp (gdbarch, d10v_read_fp); set_gdbarch_read_sp (gdbarch, d10v_read_sp); set_gdbarch_num_regs (gdbarch, d10v_num_regs); - set_gdbarch_sp_regnum (gdbarch, 15); + set_gdbarch_sp_regnum (gdbarch, D10V_SP_REGNUM); set_gdbarch_pc_regnum (gdbarch, 18); set_gdbarch_register_name (gdbarch, d10v_register_name); set_gdbarch_register_size (gdbarch, 2); set_gdbarch_register_bytes (gdbarch, (d10v_num_regs - 2) * 2 + 16); - set_gdbarch_register_byte (gdbarch, d10v_register_byte); - set_gdbarch_register_raw_size (gdbarch, d10v_register_raw_size); set_gdbarch_register_virtual_size (gdbarch, generic_register_size); set_gdbarch_register_type (gdbarch, d10v_register_type); @@ -1672,14 +1618,6 @@ d10v_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) "d10v_gdbarch_init: bad byte order for float format"); } - set_gdbarch_call_dummy_length (gdbarch, 0); - set_gdbarch_call_dummy_address (gdbarch, entry_point_address); - set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1); - set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0); - set_gdbarch_call_dummy_start_offset (gdbarch, 0); - set_gdbarch_call_dummy_p (gdbarch, 1); - set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy); - set_gdbarch_extract_return_value (gdbarch, d10v_extract_return_value); set_gdbarch_push_dummy_call (gdbarch, d10v_push_dummy_call); set_gdbarch_store_return_value (gdbarch, d10v_store_return_value); @@ -1697,7 +1635,6 @@ d10v_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_frame_args_skip (gdbarch, 0); set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue); - set_gdbarch_saved_pc_after_call (gdbarch, d10v_saved_pc_after_call); set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); set_gdbarch_stack_align (gdbarch, d10v_stack_align); @@ -1706,6 +1643,7 @@ d10v_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_print_registers_info (gdbarch, d10v_print_registers_info); frame_unwind_append_predicate (gdbarch, d10v_frame_p); + frame_base_set_default (gdbarch, &d10v_frame_base); /* Methods for saving / extracting a dummy frame's ID. */ set_gdbarch_unwind_dummy_id (gdbarch, d10v_unwind_dummy_id); @@ -1714,6 +1652,8 @@ d10v_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) /* Return the unwound PC value. */ set_gdbarch_unwind_pc (gdbarch, d10v_unwind_pc); + set_gdbarch_print_insn (gdbarch, print_insn_d10v); + return gdbarch; } @@ -1722,8 +1662,6 @@ _initialize_d10v_tdep (void) { register_gdbarch_init (bfd_arch_d10v, d10v_gdbarch_init); - tm_print_insn = print_insn_d10v; - target_resume_hook = d10v_eva_prepare_to_trace; target_wait_loop_hook = d10v_eva_get_trace_data; @@ -1744,13 +1682,13 @@ as reported by info trace (NOT addresses!)."); add_info ("itrace", trace_info, "Display info about the trace data buffer."); - add_show_from_set (add_set_cmd ("itracedisplay", no_class, - var_integer, (char *) &trace_display, - "Set automatic display of trace.\n", &setlist), - &showlist); - add_show_from_set (add_set_cmd ("itracesource", no_class, - var_integer, (char *) &default_trace_show_source, - "Set display of source code with trace.\n", &setlist), - &showlist); - + add_setshow_boolean_cmd ("itracedisplay", no_class, &trace_display, + "Set automatic display of trace.\n", + "Show automatic display of trace.\n", + NULL, NULL, &setlist, &showlist); + add_setshow_boolean_cmd ("itracesource", no_class, + &default_trace_show_source, + "Set display of source code with trace.\n", + "Show display of source code with trace.\n", + NULL, NULL, &setlist, &showlist); }