X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fmep-tdep.c;h=960500c167e58bcc0a1c76d7d083a7bea0992527;hb=64c311498e46cef6b70aa88577e7d7c382e0f7cc;hp=648ad91e42a6a30ea6e5bd4cbca89d8be76be342;hpb=0dfff4cba79b63947da409e72b2863b160a6233a;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/mep-tdep.c b/gdb/mep-tdep.c index 648ad91e42..960500c167 100644 --- a/gdb/mep-tdep.c +++ b/gdb/mep-tdep.c @@ -1,7 +1,6 @@ /* Target-dependent code for the Toshiba MeP for GDB, the GNU debugger. - Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 - Free Software Foundation, Inc. + Copyright (C) 2001-2012 Free Software Foundation, Inc. Contributed by Red Hat, Inc. @@ -46,7 +45,7 @@ #include "elf-bfd.h" #include "elf/mep.h" #include "prologue-value.h" -#include "opcode/cgen-bitset.h" +#include "cgen/bitset.h" #include "infcall.h" #include "gdb_assert.h" @@ -804,7 +803,7 @@ mep_pseudo_cr_size (int pseudo) || IS_FP_CR64_REGNUM (pseudo)) return 64; else - gdb_assert (0); + gdb_assert_not_reached ("unexpected coprocessor pseudo register"); } @@ -833,7 +832,7 @@ mep_pseudo_cr_index (int pseudo) else if (IS_FP_CR64_REGNUM (pseudo)) return pseudo - MEP_FIRST_FP_CR64_REGNUM; else - gdb_assert (0); + gdb_assert_not_reached ("unexpected coprocessor pseudo register"); } @@ -845,7 +844,7 @@ mep_pseudo_cr_index (int pseudo) from the ELF header's e_flags field of the current executable file. */ static CONFIG_ATTR -current_me_module () +current_me_module (void) { if (target_has_registers) { @@ -868,7 +867,7 @@ current_me_module () then use the 'module_opt' field we computed when we build the gdbarch object for this module. */ static unsigned int -current_options () +current_options (void) { if (target_has_registers) { @@ -885,7 +884,7 @@ current_options () /* Return the width of the current me_module's coprocessor data bus, in bits. This is either 32 or 64. */ static int -current_cop_data_bus_width () +current_cop_data_bus_width (void) { return me_module_cop_data_bus_width (current_me_module ()); } @@ -894,7 +893,7 @@ current_cop_data_bus_width () /* Return the keyword table of coprocessor general-purpose register names appropriate for the me_module we're dealing with. */ static CGEN_KEYWORD * -current_cr_names () +current_cr_names (void) { const CGEN_HW_ENTRY *hw = me_module_register_set (current_me_module (), "h-cr-", HW_H_CR); @@ -906,7 +905,7 @@ current_cr_names () /* Return non-zero if the coprocessor general-purpose registers are floating-point values, zero otherwise. */ static int -current_cr_is_float () +current_cr_is_float (void) { const CGEN_HW_ENTRY *hw = me_module_register_set (current_me_module (), "h-cr-", HW_H_CR); @@ -918,7 +917,7 @@ current_cr_is_float () /* Return the keyword table of coprocessor control register names appropriate for the me_module we're dealing with. */ static CGEN_KEYWORD * -current_ccr_names () +current_ccr_names (void) { const CGEN_HW_ENTRY *hw = me_module_register_set (current_me_module (), "h-ccr-", HW_H_CCR); @@ -1084,7 +1083,7 @@ mep_register_type (struct gdbarch *gdbarch, int reg_nr) keep the 'g' packet format fixed), and the pseudoregisters vary in length. */ if (IS_RAW_CR_REGNUM (reg_nr)) - return builtin_type_uint64; + return builtin_type (gdbarch)->builtin_uint64; /* Since GDB doesn't allow registers to change type, we have two banks of pseudoregisters for the coprocessor general-purpose @@ -1099,22 +1098,22 @@ mep_register_type (struct gdbarch *gdbarch, int reg_nr) if (mep_pseudo_cr_is_float (reg_nr)) return builtin_type (gdbarch)->builtin_float; else - return builtin_type_uint32; + return builtin_type (gdbarch)->builtin_uint32; } else if (size == 64) { if (mep_pseudo_cr_is_float (reg_nr)) return builtin_type (gdbarch)->builtin_double; else - return builtin_type_uint64; + return builtin_type (gdbarch)->builtin_uint64; } else - gdb_assert (0); + gdb_assert_not_reached ("unexpected cr size"); } /* All other registers are 32 bits long. */ else - return builtin_type_uint32; + return builtin_type (gdbarch)->builtin_uint32; } @@ -1133,12 +1132,14 @@ mep_write_pc (struct regcache *regcache, CORE_ADDR pc) } -static void +static enum register_status mep_pseudo_cr32_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, void *buf) { + enum register_status status; + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* Read the raw register into a 64-bit buffer, and then return the appropriate end of that buffer. */ int rawnum = mep_pseudo_to_raw[cookednum]; @@ -1146,23 +1147,28 @@ mep_pseudo_cr32_read (struct gdbarch *gdbarch, gdb_assert (TYPE_LENGTH (register_type (gdbarch, rawnum)) == sizeof (buf64)); gdb_assert (TYPE_LENGTH (register_type (gdbarch, cookednum)) == 4); - regcache_raw_read (regcache, rawnum, buf64); - /* Slow, but legible. */ - store_unsigned_integer (buf, 4, extract_unsigned_integer (buf64, 8)); + status = regcache_raw_read (regcache, rawnum, buf64); + if (status == REG_VALID) + { + /* Slow, but legible. */ + store_unsigned_integer (buf, 4, byte_order, + extract_unsigned_integer (buf64, 8, byte_order)); + } + return status; } -static void +static enum register_status mep_pseudo_cr64_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, void *buf) { - regcache_raw_read (regcache, mep_pseudo_to_raw[cookednum], buf); + return regcache_raw_read (regcache, mep_pseudo_to_raw[cookednum], buf); } -static void +static enum register_status mep_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, @@ -1170,15 +1176,15 @@ mep_pseudo_register_read (struct gdbarch *gdbarch, { if (IS_CSR_REGNUM (cookednum) || IS_CCR_REGNUM (cookednum)) - regcache_raw_read (regcache, mep_pseudo_to_raw[cookednum], buf); + return regcache_raw_read (regcache, mep_pseudo_to_raw[cookednum], buf); else if (IS_CR32_REGNUM (cookednum) || IS_FP_CR32_REGNUM (cookednum)) - mep_pseudo_cr32_read (gdbarch, regcache, cookednum, buf); + return mep_pseudo_cr32_read (gdbarch, regcache, cookednum, buf); else if (IS_CR64_REGNUM (cookednum) || IS_FP_CR64_REGNUM (cookednum)) - mep_pseudo_cr64_read (gdbarch, regcache, cookednum, buf); + return mep_pseudo_cr64_read (gdbarch, regcache, cookednum, buf); else - gdb_assert (0); + gdb_assert_not_reached ("unexpected pseudo register"); } @@ -1188,6 +1194,7 @@ mep_pseudo_csr_write (struct gdbarch *gdbarch, int cookednum, const void *buf) { + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); int size = register_size (gdbarch, cookednum); struct mep_csr_register *r = &mep_csr_registers[cookednum - MEP_FIRST_CSR_REGNUM]; @@ -1204,7 +1211,7 @@ mep_pseudo_csr_write (struct gdbarch *gdbarch, ULONGEST mixed_bits; regcache_raw_read_unsigned (regcache, r->raw, &old_bits); - new_bits = extract_unsigned_integer (buf, size); + new_bits = extract_unsigned_integer (buf, size, byte_order); mixed_bits = ((r->writeable_bits & new_bits) | (~r->writeable_bits & old_bits)); regcache_raw_write_unsigned (regcache, r->raw, mixed_bits); @@ -1218,6 +1225,7 @@ mep_pseudo_cr32_write (struct gdbarch *gdbarch, int cookednum, const void *buf) { + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* Expand the 32-bit value into a 64-bit value, and write that to the pseudoregister. */ int rawnum = mep_pseudo_to_raw[cookednum]; @@ -1226,7 +1234,8 @@ mep_pseudo_cr32_write (struct gdbarch *gdbarch, gdb_assert (TYPE_LENGTH (register_type (gdbarch, rawnum)) == sizeof (buf64)); gdb_assert (TYPE_LENGTH (register_type (gdbarch, cookednum)) == 4); /* Slow, but legible. */ - store_unsigned_integer (buf64, 8, extract_unsigned_integer (buf, 4)); + store_unsigned_integer (buf64, 8, byte_order, + extract_unsigned_integer (buf, 4, byte_order)); regcache_raw_write (regcache, rawnum, buf64); } @@ -1258,7 +1267,7 @@ mep_pseudo_register_write (struct gdbarch *gdbarch, else if (IS_CCR_REGNUM (cookednum)) regcache_raw_write (regcache, mep_pseudo_to_raw[cookednum], buf); else - gdb_assert (0); + gdb_assert_not_reached ("unexpected pseudo register"); } @@ -1266,8 +1275,8 @@ mep_pseudo_register_write (struct gdbarch *gdbarch, /* Disassembly. */ /* The mep disassembler needs to know about the section in order to - work correctly. */ -int + work correctly. */ +static int mep_gdb_print_insn (bfd_vma pc, disassemble_info * info) { struct obj_section * s = find_pc_section (pc); @@ -1320,7 +1329,7 @@ mep_gdb_print_insn (bfd_vma pc, disassemble_info * info) Every bundle is four bytes long, and naturally aligned, and can hold one or two instructions: - 16-bit core instruction; 16-bit coprocessor instruction - These execute in parallel. + These execute in parallel. - 32-bit core instruction - 32-bit coprocessor instruction @@ -1328,9 +1337,9 @@ mep_gdb_print_insn (bfd_vma pc, disassemble_info * info) Every bundle is eight bytes long, and naturally aligned, and can hold one or two instructions: - 16-bit core instruction; 48-bit (!) coprocessor instruction - These execute in parallel. + These execute in parallel. - 32-bit core instruction; 32-bit coprocessor instruction - These execute in parallel. + These execute in parallel. - 64-bit coprocessor instruction Now, the MeP manual doesn't define any 48- or 64-bit coprocessor @@ -1415,8 +1424,9 @@ mep_pc_in_vliw_section (CORE_ADDR pc) anyway. */ static CORE_ADDR -mep_get_insn (CORE_ADDR pc, long *insn) +mep_get_insn (struct gdbarch *gdbarch, CORE_ADDR pc, long *insn) { + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); int pc_in_vliw_section; int vliw_mode; int insn_len; @@ -1453,7 +1463,7 @@ mep_get_insn (CORE_ADDR pc, long *insn) vliw_mode = 0; read_memory (pc, buf, sizeof (buf)); - *insn = extract_unsigned_integer (buf, 2) << 16; + *insn = extract_unsigned_integer (buf, 2, byte_order) << 16; /* The major opcode --- the top four bits of the first 16-bit part --- indicates whether this instruction is 16 or 32 bits @@ -1463,7 +1473,7 @@ mep_get_insn (CORE_ADDR pc, long *insn) { /* Fetch the second 16-bit part of the instruction. */ read_memory (pc + 2, buf, sizeof (buf)); - *insn = *insn | extract_unsigned_integer (buf, 2); + *insn = *insn | extract_unsigned_integer (buf, 2, byte_order); } /* If we're in VLIW code, then the VLIW width determines the address @@ -1482,7 +1492,7 @@ mep_get_insn (CORE_ADDR pc, long *insn) /* We'd better be in either core, 32-bit VLIW, or 64-bit VLIW mode. */ else - gdb_assert (0); + gdb_assert_not_reached ("unexpected vliw mode"); } /* Otherwise, the top two bits of the major opcode are (again) what @@ -1691,7 +1701,7 @@ mep_analyze_prologue (struct gdbarch *gdbarch, result->reg_offset[rn] = 1; } - stack = make_pv_area (MEP_SP_REGNUM); + stack = make_pv_area (MEP_SP_REGNUM, gdbarch_addr_bit (gdbarch)); back_to = make_cleanup_free_pv_area (stack); pc = start_pc; @@ -1700,7 +1710,7 @@ mep_analyze_prologue (struct gdbarch *gdbarch, CORE_ADDR next_pc; pv_t pre_insn_fp, pre_insn_sp; - next_pc = mep_get_insn (pc, &insn); + next_pc = mep_get_insn (gdbarch, pc, &insn); /* A zero return from mep_get_insn means that either we weren't able to read the instruction from memory, or that we don't @@ -1786,8 +1796,7 @@ mep_analyze_prologue (struct gdbarch *gdbarch, int disp = SWBH_32_OFFSET (insn); int size = (IS_SB (insn) ? 1 : IS_SH (insn) ? 2 - : IS_SW (insn) ? 4 - : (gdb_assert (0), 1)); + : (gdb_assert (IS_SW (insn)), 4)); pv_t addr = pv_add_constant (reg[rm], disp); if (pv_area_store_would_trash (stack, addr)) @@ -1820,7 +1829,7 @@ mep_analyze_prologue (struct gdbarch *gdbarch, body, gcc 4.x will use a BRA instruction to branch to the loop condition checking code. This BRA instruction is marked as part of the prologue. We therefore set next_pc - to this branch target and also stop the prologue scan. + to this branch target and also stop the prologue scan. The instructions at and beyond the branch target should no longer be associated with the prologue. @@ -1902,7 +1911,7 @@ mep_analyze_prologue (struct gdbarch *gdbarch, static CORE_ADDR mep_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) { - char *name; + const char *name; CORE_ADDR func_addr, func_end; struct mep_prologue p; @@ -2084,6 +2093,7 @@ mep_frame_prev_register (struct frame_info *this_frame, static const struct frame_unwind mep_frame_unwind = { NORMAL_FRAME, + default_frame_unwind_stop_reason, mep_frame_this_id, mep_frame_prev_register, NULL, @@ -2140,7 +2150,7 @@ mep_extract_return_value (struct gdbarch *arch, else offset = 0; - /* Return values that do fit in a single register are returned in R0. */ + /* Return values that do fit in a single register are returned in R0. */ regcache_cooked_read_part (regcache, MEP_R0_REGNUM, offset, TYPE_LENGTH (type), valbuf); @@ -2175,17 +2185,16 @@ mep_store_return_value (struct gdbarch *arch, /* Return values larger than a single register are returned in memory, pointed to by R0. Unfortunately, we can't count on R0 - pointing to the return buffer, so we raise an error here. */ + pointing to the return buffer, so we raise an error here. */ else - error ("GDB cannot set return values larger than four bytes; " - "the Media Processor's\n" - "calling conventions do not provide enough information " - "to do this.\n" - "Try using the 'return' command with no argument."); + error (_("\ +GDB cannot set return values larger than four bytes; the Media Processor's\n\ +calling conventions do not provide enough information to do this.\n\ +Try using the 'return' command with no argument.")); } -enum return_value_convention -mep_return_value (struct gdbarch *gdbarch, struct type *func_type, +static enum return_value_convention +mep_return_value (struct gdbarch *gdbarch, struct value *function, struct type *type, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf) { @@ -2204,12 +2213,11 @@ mep_return_value (struct gdbarch *gdbarch, struct type *func_type, { /* Return values larger than a single register are returned in memory, pointed to by R0. Unfortunately, we can't count on R0 - pointing to the return buffer, so we raise an error here. */ - error ("GDB cannot set return values larger than four bytes; " - "the Media Processor's\n" - "calling conventions do not provide enough information " - "to do this.\n" - "Try using the 'return' command with no argument."); + pointing to the return buffer, so we raise an error here. */ + error (_("\ +GDB cannot set return values larger than four bytes; the Media Processor's\n\ +calling conventions do not provide enough information to do this.\n\ +Try using the 'return' command with no argument.")); } return RETURN_VALUE_ABI_RETURNS_ADDRESS; } @@ -2241,15 +2249,15 @@ mep_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp) 4.2.1 Core register conventions - Parameters should be evaluated from left to right, and they - should be held in $1,$2,$3,$4 in order. The fifth parameter or - after should be held in the stack. If the size is larger than 4 + should be held in $1,$2,$3,$4 in order. The fifth parameter or + after should be held in the stack. If the size is larger than 4 bytes in the first four parameters, the pointer should be held in - the registers instead. If the size is larger than 4 bytes in the + the registers instead. If the size is larger than 4 bytes in the fifth parameter or after, the pointer should be held in the stack. - - Return value of a function should be held in register $0. If the + - Return value of a function should be held in register $0. If the size of return value is larger than 4 bytes, $1 should hold the - pointer pointing memory that would hold the return value. In this + pointer pointing memory that would hold the return value. In this case, the first parameter should be held in $2, the second one in $3, and the third one in $4, and the forth parameter or after should be held in the stack. @@ -2294,6 +2302,7 @@ mep_push_dummy_call (struct gdbarch *gdbarch, struct value *function, int struct_return, CORE_ADDR struct_addr) { + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); CORE_ADDR *copy = (CORE_ADDR *) alloca (argc * sizeof (copy[0])); CORE_ADDR func_addr = find_function_addr (function, NULL); int i; @@ -2334,7 +2343,8 @@ mep_push_dummy_call (struct gdbarch *gdbarch, struct value *function, /* Arguments that fit in a GPR get expanded to fill the GPR. */ if (arg_size <= MEP_GPR_SIZE) value = extract_unsigned_integer (value_contents (argv[i]), - TYPE_LENGTH (value_type (argv[i]))); + TYPE_LENGTH (value_type (argv[i])), + byte_order); /* Arguments too large to fit in a GPR get copied to the stack, and we pass a pointer to the copy. */ @@ -2350,7 +2360,7 @@ mep_push_dummy_call (struct gdbarch *gdbarch, struct value *function, else { char buf[MEP_GPR_SIZE]; - store_unsigned_integer (buf, MEP_GPR_SIZE, value); + store_unsigned_integer (buf, MEP_GPR_SIZE, byte_order, value); write_memory (arg_stack, buf, MEP_GPR_SIZE); arg_stack += MEP_GPR_SIZE; } @@ -2420,14 +2430,14 @@ mep_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) fputc_unfiltered ('\n', gdb_stderr); if (module_name) - warning ("the MeP module '%s' is %s-endian, but the executable\n" - "%s is %s-endian.", + warning (_("the MeP module '%s' is %s-endian, but the executable\n" + "%s is %s-endian."), module_name, module_endianness, file_name, file_endianness); else - warning ("the selected MeP module is %s-endian, but the " - "executable\n" - "%s is %s-endian.", + warning (_("the selected MeP module is %s-endian, but the " + "executable\n" + "%s is %s-endian."), module_endianness, file_name, file_endianness); } } @@ -2507,6 +2517,8 @@ mep_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) return gdbarch; } +/* Provide a prototype to silence -Wmissing-prototypes. */ +extern initialize_file_ftype _initialize_mep_tdep; void _initialize_mep_tdep (void)