From d723ade79ed8bb70d9bd472e7b5f4302d23946e8 Mon Sep 17 00:00:00 2001 From: Steve Chamberlain Date: Mon, 16 Jan 1995 01:45:49 +0000 Subject: * w65-tdep.c, config/tm-w65.h, config/w65.mt: New files. * configure.in: Suppprt for w65, --- gdb/.Sanitize | 1 + gdb/Makefile.in | 2 + gdb/config/.Sanitize | 1 + gdb/configure.in | 4 + gdb/w65-tdep.c | 301 +++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 309 insertions(+) create mode 100644 gdb/w65-tdep.c (limited to 'gdb') diff --git a/gdb/.Sanitize b/gdb/.Sanitize index ff881ca..3fb6ea9 100644 --- a/gdb/.Sanitize +++ b/gdb/.Sanitize @@ -322,6 +322,7 @@ value.h values.c vax-pinsn.c vx-share +w65-tdep.c w89k-rom.c xcoffread.c xcoffsolib.c diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 6aafa5e..764783b 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -1448,6 +1448,8 @@ values.o: values.c $(defs_h) $(expression_h) $(frame_h) $(gdbcmd_h) \ vax-pinsn.o: vax-pinsn.c $(OP_INCLUDE)/vax.h $(defs_h) $(symtab_h) +w65-tdep.o : w65-tdep.c + xdr_ld.o: vx-share/xdr_ld.c $(defs_h) vx-share/vxTypes.h \ vx-share/vxWorks.h vx-share/xdr_ld.h $(CC) -c $(INTERNAL_CFLAGS) $(srcdir)/vx-share/xdr_ld.c diff --git a/gdb/config/.Sanitize b/gdb/config/.Sanitize index 1c2e294..704248e 100644 --- a/gdb/config/.Sanitize +++ b/gdb/config/.Sanitize @@ -58,6 +58,7 @@ vax xm-lynx.h xm-nbsd.h xm-sysv4.h +w65 z8k Things-to-lose: diff --git a/gdb/configure.in b/gdb/configure.in index c9e0819..9afcd56 100644 --- a/gdb/configure.in +++ b/gdb/configure.in @@ -138,6 +138,8 @@ vax-*-bsd*) gdb_host=vaxbsd ;; vax-*-ultrix2*) gdb_host=vaxult2 ;; vax-*-ultrix*) gdb_host=vaxult ;; +w65-*-*) gdb_host=w65 ;; + esac @@ -338,6 +340,8 @@ tahoe-*-*) gdb_target=tahoe ;; vax-*-*) gdb_target=vax ;; +w65-*-*) gdb_target=w65 ;; + z8k-*-sim*) gdb_target=z8ksim ;; z8k-*-coff*) gdb_target=z8ksim ;; diff --git a/gdb/w65-tdep.c b/gdb/w65-tdep.c new file mode 100644 index 0000000..0b047ec --- /dev/null +++ b/gdb/w65-tdep.c @@ -0,0 +1,301 @@ +/* Target-machine dependent code for WDC-65816, for GDB. + Copyright (C) 1995 Free Software Foundation, Inc. + + 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 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* + Contributed by Steve Chamberlain + sac@cygnus.com + */ + +#include "defs.h" +#include "frame.h" +#include "obstack.h" +#include "symtab.h" +#include "gdbcmd.h" +#include "gdbtypes.h" +#include "dis-asm.h" + + +/* Return the saved PC from this frame. */ + + +CORE_ADDR +w65_frame_saved_pc (frame) + struct frame_info *frame; +{ + return (read_memory_integer (frame->frame + 2, 4) & 0xffffff); +} + +CORE_ADDR +addr_bits_remove (x) + CORE_ADDR x; +{ + return x; +} + +read_memory_pointer (x) + CORE_ADDR x; +{ + return read_memory_integer (ADDR_BITS_REMOVE (x), 4); +} + +init_frame_pc () +{ + abort (); +} + +void +w65_push_dummy_frame () +{ + abort (); +} + +int +print_insn (memaddr, stream) + CORE_ADDR memaddr; + GDB_FILE *stream; +{ + disassemble_info info; + + GDB_INIT_DISASSEMBLE_INFO (info, stream); + + return print_insn_w65 ((bfd_vma) memaddr, &info); +} + +/* Put here the code to store, into a struct frame_saved_regs, + the addresses of the saved registers of frame described by FRAME_INFO. + This includes special registers such as pc and fp saved in special + ways in the stack frame. sp is even more special: + the address we return for it IS the sp for the next frame. + + We cache the result of doing this in the frame_cache_obstack, since + it is fairly expensive. */ + +void +frame_find_saved_regs (fip, fsrp) + struct frame_info *fip; + struct frame_saved_regs *fsrp; +{ + int locals; + CORE_ADDR pc; + CORE_ADDR adr; + int i; + + memset (fsrp, 0, sizeof *fsrp); +} + +int +saved_pc_after_call () +{ + int sp = read_register (SP_REGNUM); + int val = read_memory_integer (sp + 1, 4); + return ADDR_BITS_REMOVE (val); +} + + +extract_return_value (type, regbuf, valbuf) + struct type *type; + char *regbuf; + char *valbuf; +{ + int b; + int len = TYPE_LENGTH (type); + + for (b = 0; b < len; b += 2) + { + int todo = len - b; + if (todo > 2) + todo = 2; + memcpy (valbuf + b, regbuf + b, todo); + } +} + +void +write_return_value (type, valbuf) + struct type *type; + char *valbuf; +{ + int reg; + int len; + for (len = 0; len < TYPE_LENGTH (type); len += 2) + { + write_register_bytes (REGISTER_BYTE (len / 2 + 2), valbuf + len, 2); + } +} + +void +store_struct_return (addr, sp) + CORE_ADDR addr; + CORE_ADDR sp; +{ + write_register (2, addr); +} + +void +w65_pop_frame () +{ +} + +init_extra_frame_info () +{ +} + +pop_frame () +{ +} + +w65_frame_chain (thisframe) + struct frame_info *thisframe; +{ + return 0xffff & read_memory_integer ((thisframe)->frame, 2); +} + +static int +gb (x) +{ + return read_memory_integer (x, 1) & 0xff; +} + +extern CORE_ADDR +w65_skip_prologue (pc) + CORE_ADDR pc; +{ + CORE_ADDR too_far = pc + 20; + + /* looking for bits of the prologue, we can expect to + see this in a frameful function: + + stack adjust: + + 3B tsc + 1A inc a + 18 clc + 69E2FF adc #0xffe2 + 3A dec a + 1B tcs + 1A inc a + + link: + + A500 lda "); + if ((C | Z) == 1) + printf_unfiltered ("u<= "); + if ((C == 0)) + printf_unfiltered ("u>= "); + if (C == 1) + printf_unfiltered ("u< "); + if (Z == 0) + printf_unfiltered ("!= "); + if (Z == 1) + printf_unfiltered ("== "); + if ((N ^ V) == 0) + printf_unfiltered (">= "); + if ((N ^ V) == 1) + printf_unfiltered ("< "); + if ((Z | (N ^ V)) == 0) + printf_unfiltered ("> "); + if ((Z | (N ^ V)) == 1) + printf_unfiltered ("<= "); + } +} -- cgit v1.1