diff options
Diffstat (limited to 'gdb/config/rs6000')
| -rw-r--r-- | gdb/config/rs6000/tm-rs6000.h | 86 |
1 files changed, 48 insertions, 38 deletions
diff --git a/gdb/config/rs6000/tm-rs6000.h b/gdb/config/rs6000/tm-rs6000.h index 5fea98b..08e5221 100644 --- a/gdb/config/rs6000/tm-rs6000.h +++ b/gdb/config/rs6000/tm-rs6000.h @@ -1,5 +1,6 @@ /* Parameters for target execution on an RS6000, for GDB, the GNU debugger. - Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc. + Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994 + Free Software Foundation, Inc. Contributed by IBM Corporation. This file is part of GDB. @@ -111,21 +112,18 @@ function_frame_info PARAMS ((CORE_ADDR, struct aix_framedata *)); #define START_INFERIOR_TRAPS_EXPECTED 2 -/* AIX might return a sigtrap, with a "stop after load" status. It should - be ignored by gdb, shouldn't be mixed up with breakpoint traps. */ +/* AIX has a couple of strange returns from wait(). */ -/* Another little glitch in AIX is signal 0. I have no idea why wait(2) - returns with this status word. It looks harmless. */ - -#define SIGTRAP_STOP_AFTER_LOAD(W) \ - if ( (W) == 0x57c || (W) == 0x7f) { \ - if ((W)==0x57c && breakpoints_inserted) { \ - mark_breakpoints_out (); \ - insert_breakpoints (); \ - } \ - resume (0, 0); \ - continue; \ - } +#define CHILD_SPECIAL_WAITSTATUS(ourstatus, hoststatus) ( \ + /* "stop after load" status. */ \ + (hoststatus) == 0x57c ? (ourstatus)->kind = TARGET_WAITKIND_LOADED, 1 : \ + \ + /* signal 0. I have no idea why wait(2) returns with this status word. */ \ + /* It looks harmless. */ \ + (hoststatus) == 0x7f ? (ourstatus)->kind = TARGET_WAITKIND_SPURIOUS, 1 : \ + \ + /* A normal waitstatus. Let the usual macros deal with it. */ \ + 0) /* In xcoff, we cannot process line numbers when we see them. This is mainly because we don't know the boundaries of the include files. So, @@ -195,17 +193,11 @@ extern void xcoff_relocate_core PARAMS ((void)); #define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */ -/* Largest integer type */ - -#define LONGEST long - -/* Name of the builtin type for the LONGEST type above. */ - -#define BUILTIN_TYPE_LONGEST builtin_type_long - -/* Say how long (ordinary) registers are. */ +/* Say how long (ordinary) registers are. This is a piece of bogosity + used in push_word and a few other places; REGISTER_RAW_SIZE is the + real way to know how big a register is. */ -#define REGISTER_TYPE long +#define REGISTER_SIZE 4 /* Number of machine registers */ @@ -302,21 +294,39 @@ extern void xcoff_relocate_core PARAMS ((void)); #define STAB_REG_TO_REGNUM(value) (value) /* Nonzero if register N requires conversion - from raw format to virtual format. */ + from raw format to virtual format. + The register format for rs6000 floating point registers is always + double, we need a conversion if the memory format is float. */ #define REGISTER_CONVERTIBLE(N) ((N) >= FP0_REGNUM && (N) <= FPLAST_REGNUM) -/* Convert data from raw format for register REGNUM - to virtual format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \ - memcpy ((TO), (FROM), REGISTER_RAW_SIZE (REGNUM)) - -/* Convert data from virtual format for register REGNUM - to raw format for register REGNUM. */ +/* Convert data from raw format for register REGNUM in buffer FROM + to virtual format with type TYPE in buffer TO. */ + +#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ +{ \ + if (TYPE_LENGTH (TYPE) != REGISTER_RAW_SIZE (REGNUM)) \ + { \ + double val = extract_floating ((FROM), REGISTER_RAW_SIZE (REGNUM)); \ + store_floating ((TO), TYPE_LENGTH (TYPE), val); \ + } \ + else \ + memcpy ((TO), (FROM), REGISTER_RAW_SIZE (REGNUM)); \ +} -#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \ - memcpy ((TO), (FROM), REGISTER_RAW_SIZE (REGNUM)) +/* Convert data from virtual format with type TYPE in buffer FROM + to raw format for register REGNUM in buffer TO. */ + +#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ +{ \ + if (TYPE_LENGTH (TYPE) != REGISTER_RAW_SIZE (REGNUM)) \ + { \ + double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \ + store_floating ((TO), REGISTER_RAW_SIZE (REGNUM), val); \ + } \ + else \ + memcpy ((TO), (FROM), REGISTER_RAW_SIZE (REGNUM)); \ +} /* Return the GDB type object for the "standard" data type of data in register N. */ @@ -331,7 +341,7 @@ extern void xcoff_relocate_core PARAMS ((void)); Since gdb needs to find it, we will store in a designated variable `rs6000_struct_return_address'. */ -extern unsigned int rs6000_struct_return_address; +extern CORE_ADDR rs6000_struct_return_address; #define STORE_STRUCT_RETURN(ADDR, SP) \ { write_register (3, (ADDR)); \ @@ -472,7 +482,7 @@ CORE_ADDR rs6000_frame_chain PARAMS ((struct frame_info *)); \ func_start = get_pc_function_start ((FRAME_INFO)->pc) + FUNCTION_START_OFFSET; \ function_frame_info (func_start, &fdata); \ - bzero (&(FRAME_SAVED_REGS), sizeof (FRAME_SAVED_REGS)); \ + memset (&(FRAME_SAVED_REGS), '\0', sizeof (FRAME_SAVED_REGS)); \ \ /* if there were any saved registers, figure out parent's stack pointer. */ \ frame_addr = 0; \ |