diff options
Diffstat (limited to 'gdb/h8300-tdep.c')
| -rw-r--r-- | gdb/h8300-tdep.c | 228 |
1 files changed, 115 insertions, 113 deletions
diff --git a/gdb/h8300-tdep.c b/gdb/h8300-tdep.c index 4fc502e4fa9..a0bea530d93 100644 --- a/gdb/h8300-tdep.c +++ b/gdb/h8300-tdep.c @@ -1,25 +1,26 @@ /* Target-machine dependent code for Hitachi H8/300, for GDB. Copyright (C) 1988, 1990, 1991 Free Software Foundation, Inc. -This file is part of GDB. + This file is part of GDB. -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. -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. */ + 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. */ /* - Contributed by Steve Chamberlain - sac@cygnus.com + Contributed by Steve Chamberlain + sac@cygnus.com */ #include "defs.h" @@ -57,8 +58,8 @@ extern int h8300hmode, h8300smode; static char *original_register_names[] = REGISTER_NAMES; static char *h8300h_register_names[] = - {"er0", "er1", "er2", "er3", "er4", "er5", "er6", - "sp", "ccr","pc","cycles","tick","inst" }; +{"er0", "er1", "er2", "er3", "er4", "er5", "er6", + "sp", "ccr", "pc", "cycles", "tick", "inst"}; char **h8300_register_names = original_register_names; @@ -70,7 +71,7 @@ static void set_machine_hook PARAMS ((char *filename)); void h8300_frame_find_saved_regs (); -CORE_ADDR +CORE_ADDR h8300_skip_prologue (start_pc) CORE_ADDR start_pc; { @@ -165,10 +166,10 @@ CORE_ADDR h8300_frame_chain (thisframe) struct frame_info *thisframe; { - if (PC_IN_CALL_DUMMY(thisframe->pc, thisframe->frame, thisframe->frame)) - { /* initialize the from_pc now */ + if (PC_IN_CALL_DUMMY (thisframe->pc, thisframe->frame, thisframe->frame)) + { /* initialize the from_pc now */ thisframe->from_pc = generic_read_register_dummy (thisframe->pc, - thisframe->frame, + thisframe->frame, PC_REGNUM); return thisframe->frame; } @@ -203,15 +204,15 @@ h8300_frame_find_saved_regs (fi, fsr) fi->fsr = cache_fsr; - if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame)) - { /* no more to do. */ + if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) + { /* no more to do. */ if (fsr) *fsr = *fi->fsr; return; } /* Find the start and end of the function prologue. If the PC - is in the function prologue, we only consider the part that - has executed already. */ + is in the function prologue, we only consider the part that + has executed already. */ ip = get_pc_function_start (fi->pc); sal = find_pc_line (ip, 0); @@ -228,7 +229,7 @@ h8300_frame_find_saved_regs (fi, fsr) /* Fetch the instruction at ADDR, returning 0 if ADDR is beyond LIM or is not the address of a valid instruction, the address of the next instruction beyond ADDR otherwise. *PWORD1 receives the first word - of the instruction.*/ + of the instruction. */ CORE_ADDR NEXT_PROLOGUE_INSN (addr, lim, pword1) @@ -404,7 +405,7 @@ examine_prologue (ip, limit, after_prolog_fp, fsr, fi) /* Rememeber any others too */ in_frame[PC_REGNUM] = 0; - + if (have_fp) /* We keep the old FP in the SP spot */ fsr->regs[SP_REGNUM] = read_memory_unsigned_integer (fsr->regs[6], BINWORD); @@ -423,8 +424,8 @@ h8300_init_extra_frame_info (fromleaf, fi) fi->args_pointer = 0; /* Unknown */ fi->locals_pointer = 0; /* Unknown */ fi->from_pc = 0; - if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame)) - { /* anything special to do? */ + if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) + { /* anything special to do? */ return; } } @@ -438,7 +439,7 @@ CORE_ADDR h8300_frame_saved_pc (frame) struct frame_info *frame; { - if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame)) + if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) return generic_read_register_dummy (frame->pc, frame->frame, PC_REGNUM); else return frame->from_pc; @@ -448,7 +449,7 @@ CORE_ADDR frame_locals_address (fi) struct frame_info *fi; { - if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame)) + if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) return (CORE_ADDR) 0; /* Not sure what else to do... */ if (!fi->locals_pointer) { @@ -467,7 +468,7 @@ CORE_ADDR frame_args_address (fi) struct frame_info *fi; { - if (PC_IN_CALL_DUMMY(fi->pc, fi->frame, fi->frame)) + if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) return (CORE_ADDR) 0; /* Not sure what else to do... */ if (!fi->args_pointer) { @@ -510,7 +511,7 @@ frame_args_address (fi) optimization. I suspect this is a compiler bug. Arguments of these odd sizes are left-justified within the word (as opposed to arguments smaller than WORDSIZE bytes, which are right-justified). - + If the function is to return an aggregate type such as a struct, the caller must allocate space into which the callee will copy the return value. In this case, a pointer to the return value location @@ -518,7 +519,7 @@ frame_args_address (fi) the other arguments passed in via registers R0 to R2. */ CORE_ADDR -h8300_push_arguments(nargs, args, sp, struct_return, struct_addr) +h8300_push_arguments (nargs, args, sp, struct_return, struct_addr) int nargs; struct value **args; CORE_ADDR sp; @@ -538,27 +539,27 @@ h8300_push_arguments(nargs, args, sp, struct_return, struct_addr) if (h8300hmode || h8300smode) { stack_align = 3; - wordsize = 4; + wordsize = 4; } else { stack_align = 1; - wordsize = 2; + wordsize = 2; } /* first force sp to a n-byte alignment */ sp = sp & ~stack_align; /* Now make sure there's space on the stack */ - for (argnum = 0, stack_alloc = 0; + for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++) - stack_alloc += ((TYPE_LENGTH(VALUE_TYPE(args[argnum])) + stack_align) + stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + stack_align) & ~stack_align); - sp -= stack_alloc; /* make room on stack for args */ + sp -= stack_alloc; /* make room on stack for args */ /* we may over-allocate a little here, but that won't hurt anything */ - argreg = ARG0_REGNUM; - if (struct_return) /* "struct return" pointer takes up one argreg */ + argreg = ARG0_REGNUM; + if (struct_return) /* "struct return" pointer takes up one argreg */ { write_register (argreg++, struct_addr); } @@ -571,30 +572,30 @@ h8300_push_arguments(nargs, args, sp, struct_return, struct_addr) { type = VALUE_TYPE (args[argnum]); len = TYPE_LENGTH (type); - memset(valbuf, 0, sizeof(valbuf)); + memset (valbuf, 0, sizeof (valbuf)); if (len < wordsize) { /* the purpose of this is to right-justify the value within the word */ - memcpy(valbuf + (wordsize - len), - (char *) VALUE_CONTENTS (args[argnum]), len); + memcpy (valbuf + (wordsize - len), + (char *) VALUE_CONTENTS (args[argnum]), len); val = valbuf; } else val = (char *) VALUE_CONTENTS (args[argnum]); - if (len > (ARGLAST_REGNUM+1 - argreg) * REGISTER_RAW_SIZE(ARG0_REGNUM) || - (len > wordsize && (len & stack_align) != 0)) - { /* passed on the stack */ - write_memory (sp + stack_offset, val, + if (len > (ARGLAST_REGNUM + 1 - argreg) * REGISTER_RAW_SIZE (ARG0_REGNUM) || + (len > wordsize && (len & stack_align) != 0)) + { /* passed on the stack */ + write_memory (sp + stack_offset, val, len < wordsize ? wordsize : len); stack_offset += (len + stack_align) & ~stack_align; } /* NOTE WELL!!!!! This is not an "else if" clause!!! - That's because some *&^%$ things get passed on the stack - AND in the registers! */ - if (len <= (ARGLAST_REGNUM+1 - argreg) * REGISTER_RAW_SIZE(ARG0_REGNUM)) + That's because some *&^%$ things get passed on the stack + AND in the registers! */ + if (len <= (ARGLAST_REGNUM + 1 - argreg) * REGISTER_RAW_SIZE (ARG0_REGNUM)) while (len > 0) - { /* there's room in registers */ + { /* there's room in registers */ regval = extract_address (val, wordsize); write_register (argreg, regval); len -= wordsize; @@ -635,16 +636,16 @@ h8300_push_return_address (pc, sp) was created. Usually used either by the "RETURN" command, or by call_function_by_hand after the dummy_frame is finished. */ -void +void h8300_pop_frame () { unsigned regnum; struct frame_saved_regs fsr; struct frame_info *frame = get_current_frame (); - if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame)) + if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) { - generic_pop_dummy_frame(); + generic_pop_dummy_frame (); } else { @@ -655,8 +656,8 @@ h8300_pop_frame () /* Don't forget SP_REGNUM is a frame_saved_regs struct is the actual value we want, not the address of the value we want. */ if (fsr.regs[regnum] && regnum != SP_REGNUM) - write_register (regnum, - read_memory_integer(fsr.regs[regnum], BINWORD)); + write_register (regnum, + read_memory_integer (fsr.regs[regnum], BINWORD)); else if (fsr.regs[regnum] && regnum == SP_REGNUM) write_register (regnum, frame->frame + 2 * BINWORD); } @@ -684,70 +685,72 @@ h8300_extract_return_value (type, regbuf, valbuf) else wordsize = 2; - len = TYPE_LENGTH(type); - - switch (len) { - case 1: /* (char) */ - case 2: /* (short), (int) */ - memcpy (valbuf, regbuf + REGISTER_BYTE(0) + (wordsize - len), len); - break; - case 4: /* (long), (float) */ - if (h8300smode || h8300hmode) - { - memcpy (valbuf, regbuf + REGISTER_BYTE(0), 4); - } - else - { - memcpy (valbuf, regbuf + REGISTER_BYTE(0), 2); - memcpy (valbuf+2, regbuf + REGISTER_BYTE(1), 2); - } - break; - case 8: /* (double) (doesn't seem to happen, which is good, - because this almost certainly isn't right. */ - error ("I don't know how a double is returned."); - break; - } + len = TYPE_LENGTH (type); + + switch (len) + { + case 1: /* (char) */ + case 2: /* (short), (int) */ + memcpy (valbuf, regbuf + REGISTER_BYTE (0) + (wordsize - len), len); + break; + case 4: /* (long), (float) */ + if (h8300smode || h8300hmode) + { + memcpy (valbuf, regbuf + REGISTER_BYTE (0), 4); + } + else + { + memcpy (valbuf, regbuf + REGISTER_BYTE (0), 2); + memcpy (valbuf + 2, regbuf + REGISTER_BYTE (1), 2); + } + break; + case 8: /* (double) (doesn't seem to happen, which is good, + because this almost certainly isn't right. */ + error ("I don't know how a double is returned."); + break; + } } /* Function: store_return_value Place the appropriate value in the appropriate registers. Primarily used by the RETURN command. */ -void +void h8300_store_return_value (type, valbuf) struct type *type; char *valbuf; { int wordsize, len, regval; - + if (h8300hmode || h8300smode) wordsize = 4; else wordsize = 2; - len = TYPE_LENGTH(type); - switch (len) { - case 1: /* char */ - case 2: /* short, int */ - regval = extract_address(valbuf, len); - write_register (0, regval); - break; - case 4: /* long, float */ - regval = extract_address(valbuf, len); - if (h8300smode || h8300hmode) - { - write_register (0, regval); - } - else - { - write_register (0, regval >> 16); - write_register (1, regval & 0xffff); - } - break; - case 8: /* presumeably double, but doesn't seem to happen */ - error ("I don't know how to return a double."); - break; - } + len = TYPE_LENGTH (type); + switch (len) + { + case 1: /* char */ + case 2: /* short, int */ + regval = extract_address (valbuf, len); + write_register (0, regval); + break; + case 4: /* long, float */ + regval = extract_address (valbuf, len); + if (h8300smode || h8300hmode) + { + write_register (0, regval); + } + else + { + write_register (0, regval >> 16); + write_register (1, regval & 0xffff); + } + break; + case 8: /* presumeably double, but doesn't seem to happen */ + error ("I don't know how to return a double."); + break; + } } struct cmd_list_element *setmemorylist; @@ -762,7 +765,7 @@ set_register_names () } static void -h8300_command(args, from_tty) +h8300_command (args, from_tty) { extern int h8300hmode; h8300hmode = 0; @@ -771,7 +774,7 @@ h8300_command(args, from_tty) } static void -h8300h_command(args, from_tty) +h8300h_command (args, from_tty) { extern int h8300hmode; h8300hmode = 1; @@ -780,7 +783,7 @@ h8300h_command(args, from_tty) } static void -h8300s_command(args, from_tty) +h8300s_command (args, from_tty) { extern int h8300smode; extern int h8300hmode; @@ -790,7 +793,7 @@ h8300s_command(args, from_tty) } -static void +static void set_machine (args, from_tty) char *args; int from_tty; @@ -815,8 +818,7 @@ set_machine_hook (filename) h8300smode = 1; h8300hmode = 1; } - else - if (bfd_get_mach (exec_bfd) == bfd_mach_h8300h) + else if (bfd_get_mach (exec_bfd) == bfd_mach_h8300h) { h8300smode = 0; h8300hmode = 1; @@ -833,7 +835,7 @@ void _initialize_h8300m () { add_prefix_cmd ("machine", no_class, set_machine, - "set the machine type", + "set the machine type", &setmemorylist, "set machine ", 0, &setlist); @@ -848,7 +850,7 @@ _initialize_h8300m () /* Add a hook to set the machine type when we're loading a file. */ - specify_exec_file_hook(set_machine_hook); + specify_exec_file_hook (set_machine_hook); } @@ -863,7 +865,7 @@ print_register_hook (regno) unsigned char b[4]; unsigned char l; read_relative_register_raw_bytes (regno, b); - l = b[REGISTER_VIRTUAL_SIZE(8) -1]; + l = b[REGISTER_VIRTUAL_SIZE (8) - 1]; printf_unfiltered ("\t"); printf_unfiltered ("I-%d - ", (l & 0x80) != 0); printf_unfiltered ("H-%d - ", (l & 0x20) != 0); |