diff options
author | Jeff Law <law@redhat.com> | 1997-02-10 23:56:56 +0000 |
---|---|---|
committer | Jeff Law <law@redhat.com> | 1997-02-10 23:56:56 +0000 |
commit | a698d0d06fa53c237244835b97b5657f68a62add (patch) | |
tree | a007b75b4e737d57bba0af1a377a1d095ea08f77 /gdb/config/mn10200 | |
parent | efaf2b5892b8ad09a93e0551e183543e5bd18082 (diff) | |
download | gdb-a698d0d06fa53c237244835b97b5657f68a62add.zip gdb-a698d0d06fa53c237244835b97b5657f68a62add.tar.gz gdb-a698d0d06fa53c237244835b97b5657f68a62add.tar.bz2 |
* mn10200-tdep.c: Remove lots of debugging printfs, update/improve
comments, formatting, etc. Plus other minor fixes for problems
I found during my first pass over the mn10200 port.
(mn10200_analyze_prologue): New function.
(mn10200_frame_chain, mn10200_init_extra_frame_info): Use it.
* config/mn10200/tm-mn10200.h: Lots of updates/improvements to
comments, formatting, etc. Minor fixes for problems I found during
my first pass over the mn10200 port.
(TARGET_*_BIT): Define appropriately for ints, long longs, doubles and
pointers.
(REGISTER_VIRTUAL_TYPE): Define as a long.
(EXTRACT_RETURN_VALUE): Rework to deal with long ints living
in register pairs.
(STORE_RETURN_VALUE): Similarly.
Checking in my initial changes, prologue scanning, etc.
Current gdb testsuite results:
=== gdb Summary ===
# of expected passes 3684
# of expected failures 40
# of unexpected failures 6
Diffstat (limited to 'gdb/config/mn10200')
-rw-r--r-- | gdb/config/mn10200/tm-mn10200.h | 103 |
1 files changed, 80 insertions, 23 deletions
diff --git a/gdb/config/mn10200/tm-mn10200.h b/gdb/config/mn10200/tm-mn10200.h index bba1810..1891075 100644 --- a/gdb/config/mn10200/tm-mn10200.h +++ b/gdb/config/mn10200/tm-mn10200.h @@ -19,9 +19,32 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/* The mn10200 is little endian. */ #define TARGET_BYTE_ORDER LITTLE_ENDIAN -/* 24 bit registers but we'll pretend that they are 32 bits */ +/* ints are only 16bits on the mn10200. */ +#undef TARGET_INT_BIT +#define TARGET_INT_BIT 16 + +/* The mn10200 doesn't support long long types. */ +#undef TARGET_LONG_LONG_BIT +#define TARGET_LONG_LONG_BIT 32 + +/* The mn10200 doesn't support double or long double either. */ +#undef TARGET_DOUBLE_BIT +#undef TARGET_LONG_DOUBLE_BIT +#define TARGET_DOUBLE_BIT 32 +#define TARGET_LONG_DOUBLE_BIT 32 + +/* Not strictly correct, but the machine independent code is not + ready to handle any of the basic sizes not being a power of two. */ +#undef TARGET_PTR_BIT +#define TARGET_PTR_BIT 32 + +/* The mn10200 really has 24 bit registers but the simulator reads/writes + them as 32bit values, so we claim they're 32bits each. This may have + to be tweaked if the Matsushita emulator/board really deals with them + as 24bits each. */ #define REGISTER_SIZE 4 #define MAX_REGISTER_RAW_SIZE REGISTER_SIZE @@ -39,7 +62,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #define MDR_REGNUM 9 #define PSW_REGNUM 10 -#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int +/* Treat the registers as 32bit values. */ +#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_long #define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE) #define REGISTER_VIRTUAL_SIZE(REG) REGISTER_SIZE @@ -47,16 +71,25 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #define MAX_REGISTER_VIRTUAL_SIZE REGISTER_SIZE +/* The breakpoint instruction must be the same size as te smallest + instruction in the instruction set. + + The Matsushita mn10x00 processors have single byte instructions + so we need a single byte breakpoint. Matsushita hasn't defined + one, so we defined it ourselves. + + 0xff is the only available single byte insn left on the mn10200. */ #define BREAKPOINT {0xff} #define FUNCTION_START_OFFSET 0 #define DECR_PC_AFTER_BREAK 0 +/* Stacks grow the normal way. */ #define INNER_THAN < #define SAVED_PC_AFTER_CALL(frame) \ - read_memory_integer (read_register (SP_REGNUM), REGISTER_SIZE) + (read_memory_integer (read_register (SP_REGNUM), REGISTER_SIZE) & 0xffff) #ifdef __STDC__ struct frame_info; @@ -65,38 +98,66 @@ struct type; struct value; #endif -#define EXTRA_FRAME_INFO struct frame_saved_regs fsr; +#define EXTRA_FRAME_INFO struct frame_saved_regs fsr; int status; int stack_size; -extern void mn10200_init_extra_frame_info PARAMS ((struct frame_info *fi)); +extern void mn10200_init_extra_frame_info PARAMS ((struct frame_info *)); #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10200_init_extra_frame_info (fi) -#define INIT_FRAME_PC /* Not necessary */ +#define INIT_FRAME_PC(x,y) -extern void mn10200_frame_find_saved_regs PARAMS ((struct frame_info *fi, struct frame_saved_regs *regaddr)); +extern void mn10200_frame_find_saved_regs PARAMS ((struct frame_info *, + struct frame_saved_regs *)); #define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr -extern CORE_ADDR mn10200_frame_chain PARAMS ((struct frame_info *fi)); +extern CORE_ADDR mn10200_frame_chain PARAMS ((struct frame_info *)); #define FRAME_CHAIN(fi) mn10200_frame_chain (fi) #define FRAME_CHAIN_VALID(FP, FI) generic_frame_chain_valid (FP, FI) -extern CORE_ADDR mn10200_find_callers_reg PARAMS ((struct frame_info *fi, int regnum)); +extern CORE_ADDR mn10200_find_callers_reg PARAMS ((struct frame_info *, int)); extern CORE_ADDR mn10200_frame_saved_pc PARAMS ((struct frame_info *)); #define FRAME_SAVED_PC(FI) (mn10200_frame_saved_pc (FI)) /* Extract from an array REGBUF containing the (raw) register state a function return value of type TYPE, and copy that, in virtual format, - into VALBUF. */ + into VALBUF. */ #define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \ - memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE)) + { \ + if (TYPE_LENGTH (TYPE) > 4) \ + abort (); \ + else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \ + { \ + memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), 2); \ + memcpy (VALBUF, REGBUF + REGISTER_BYTE (1), 2); \ + } \ + else \ + { \ + memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE)); \ + } \ + } #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ extract_address (REGBUF + REGISTER_BYTE (0), \ REGISTER_RAW_SIZE (0)) #define STORE_RETURN_VALUE(TYPE, VALBUF) \ - write_register_bytes(REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE)); - -extern CORE_ADDR mn10200_skip_prologue PARAMS ((CORE_ADDR pc)); + { \ + if (TYPE_LENGTH (TYPE) > 4) \ + abort (); \ + else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \ + { \ + write_register_bytes (REGISTER_BYTE (0), VALBUF, 2); \ + write_register_bytes (REGISTER_BYTE (1), VALBUF + 2, 2); \ + } \ + else \ + { \ + write_register_bytes (REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE)); \ + } \ + } + +#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) write_register (0, STRUCT_ADDR); + + +extern CORE_ADDR mn10200_skip_prologue PARAMS ((CORE_ADDR)); #define SKIP_PROLOGUE(pc) pc = mn10200_skip_prologue (pc) #define FRAME_ARGS_SKIP 0 @@ -105,7 +166,7 @@ extern CORE_ADDR mn10200_skip_prologue PARAMS ((CORE_ADDR pc)); #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) #define FRAME_NUM_ARGS(val, fi) ((val) = -1) -extern void mn10200_pop_frame PARAMS ((struct frame_info *frame)); +extern void mn10200_pop_frame PARAMS ((struct frame_info *)); #define POP_FRAME mn10200_pop_frame (get_current_frame ()) #define USE_GENERIC_DUMMY_FRAMES @@ -123,23 +184,19 @@ extern CORE_ADDR mn10200_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR)); #define PUSH_DUMMY_FRAME generic_push_dummy_frame () extern CORE_ADDR -mn10200_push_arguments PARAMS ((int nargs, struct value **args, CORE_ADDR sp, - unsigned char struct_return, - CORE_ADDR struct_addr)); +mn10200_push_arguments PARAMS ((int, struct value **, CORE_ADDR, + unsigned char, CORE_ADDR)); #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ (SP) = mn10200_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) -#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) - #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP) #define USE_STRUCT_CONVENTION(GCC_P, TYPE) \ (TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 4) -/* override the default get_saved_register function with - one that takes account of generic CALL_DUMMY frames */ +/* Override the default get_saved_register function with + one that takes account of generic CALL_DUMMY frames. */ #define GET_SAVED_REGISTER /* Define this for Wingdb */ - #define TARGET_MN10200 |