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-rw-r--r--opcodes/ChangeLog11
-rw-r--r--opcodes/sh-dis.c290
2 files changed, 299 insertions, 2 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 94847d4..9781edb 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,10 +1,17 @@
+Wed Aug 30 11:09:38 1995 Jim Wilson <wilson@chestnut.cygnus.com>
+
+ * sh-dis.c: Correct comment on first line of file.
+
Tue Aug 29 15:37:18 1995 Doug Evans <dje@canuck.cygnus.com>
* disassemble.c (disassembler): Handle bfd_mach_sparc64.
- * sparc-opc.c (asi): New static local.
- (sparc_{encode,decode}_asi): New functions.
+ * sparc-opc.c (asi, membar): New static locals.
+ (sparc_{encode,decode}_{asi,membar}): New functions.
+ (sparc_opcodes, membar insn): Fix.
* sparc-dis.c (print_insn): Call sparc_decode_asi.
+ Support decoding of membar masks.
+ (X_MEMBAR): Define.
Sat Aug 26 21:22:48 1995 Ian Lance Taylor <ian@cygnus.com>
diff --git a/opcodes/sh-dis.c b/opcodes/sh-dis.c
new file mode 100644
index 0000000..65570ba
--- /dev/null
+++ b/opcodes/sh-dis.c
@@ -0,0 +1,290 @@
+/* Disassemble SH instructions.
+ Copyright (C) 1993, 1995 Free Software Foundation, Inc.
+
+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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include <stdio.h>
+#define STATIC_TABLE
+#define DEFINE_TABLE
+
+#include "sh-opc.h"
+#include "dis-asm.h"
+
+#define LITTLE_BIT 2
+
+static int
+print_insn_shx(memaddr, info)
+ bfd_vma memaddr;
+ struct disassemble_info *info;
+{
+ fprintf_ftype fprintf = info->fprintf_func;
+ void *stream = info->stream;
+ unsigned char insn[2];
+ unsigned char nibs[4];
+ int status;
+ int relmask = ~0;
+ sh_opcode_info *op;
+
+ status = info->read_memory_func(memaddr, insn, 2, info);
+
+ if (status != 0)
+ {
+ info->memory_error_func(status, memaddr, info);
+ return -1;
+ }
+
+
+
+ if (info->flags & LITTLE_BIT)
+ {
+ nibs[0] = (insn[1] >> 4) & 0xf;
+ nibs[1] = insn[1] & 0xf;
+
+ nibs[2] = (insn[0] >> 4) & 0xf;
+ nibs[3] = insn[0] & 0xf;
+ }
+ else
+ {
+ nibs[0] = (insn[0] >> 4) & 0xf;
+ nibs[1] = insn[0] & 0xf;
+
+ nibs[2] = (insn[1] >> 4) & 0xf;
+ nibs[3] = insn[1] & 0xf;
+ }
+
+ for (op = sh_table; op->name; op++)
+ {
+ int n;
+ int imm;
+ int rn;
+ int rm;
+ for (n = 0; n < 4; n++) {
+ int i = op->nibbles[n];
+ if (i < 16)
+ {
+ if (nibs[n] == i) continue;
+ goto fail;
+ }
+ switch (i)
+ {
+ case BRANCH_8:
+ imm = (nibs[2] << 4) | (nibs[3]);
+ if (imm & 0x80)
+ imm |= ~0xff;
+ imm = ((char)imm) * 2 + 4 ;
+ goto ok;
+
+ case BRANCH_12:
+ imm = ((nibs[1]) << 8) | (nibs[2] << 4) | (nibs[3]);
+ if (imm & 0x800)
+ imm |= ~0xfff;
+ imm = imm * 2 + 4;
+ goto ok;
+ case IMM_4:
+ imm = nibs[3];
+ goto ok;
+ case IMM_4BY2:
+ imm = nibs[3] <<1;
+ goto ok;
+ case IMM_4BY4:
+ imm = nibs[3] <<2;
+ goto ok;
+
+
+ case IMM_8:
+ imm = (nibs[2] << 4) | nibs[3];
+ goto ok;
+ case PCRELIMM_8BY2:
+ imm = ((nibs[2] << 4) | nibs[3]) <<1;
+ relmask = ~1;
+
+ goto ok;
+
+ case PCRELIMM_8BY4:
+ imm = ((nibs[2] << 4) | nibs[3]) <<2;
+ relmask = ~3;
+ goto ok;
+
+ case IMM_8BY2:
+ imm = ((nibs[2] << 4) | nibs[3]) <<1;
+ goto ok;
+ case IMM_8BY4:
+ imm = ((nibs[2] << 4) | nibs[3]) <<2;
+ goto ok;
+ case DISP_8:
+ imm = (nibs[2] << 4) | (nibs[3]);
+ goto ok;
+ case DISP_4:
+ imm = nibs[3];
+ goto ok;
+ case REG_N:
+ rn = nibs[n];
+ break;
+ case REG_M:
+ rm = nibs[n];
+ break;
+ default:
+ abort();
+ }
+
+ }
+ ok:
+ fprintf(stream,"%s\t", op->name);
+ for (n = 0; n < 2 && op->arg[n] != A_END; n++)
+ {
+ if (n && op->arg[1] != A_END)
+ fprintf(stream,",");
+ switch (op->arg[n])
+ {
+ case A_IMM:
+ fprintf(stream,"#%d", (char)(imm));
+ break;
+ case A_R0:
+ fprintf(stream,"r0");
+ break;
+ case A_REG_N:
+ fprintf(stream,"r%d", rn);
+ break;
+ case A_INC_N:
+ fprintf(stream,"@r%d+", rn);
+ break;
+ case A_DEC_N:
+ fprintf(stream,"@-r%d", rn);
+ break;
+ case A_IND_N:
+ fprintf(stream,"@r%d", rn);
+ break;
+ case A_DISP_REG_N:
+ fprintf(stream,"@(%d,r%d)",imm, rn);
+ break;
+ case A_REG_M:
+ fprintf(stream,"r%d", rm);
+ break;
+ case A_INC_M:
+ fprintf(stream,"@r%d+", rm);
+ break;
+ case A_DEC_M:
+ fprintf(stream,"@-r%d", rm);
+ break;
+ case A_IND_M:
+ fprintf(stream,"@r%d", rm);
+ break;
+ case A_DISP_REG_M:
+ fprintf(stream,"@(%d,r%d)",imm, rm);
+ break;
+ case A_DISP_PC:
+ fprintf(stream,"0x%0x", imm+ 4+(memaddr&relmask));
+ break;
+ case A_IND_R0_REG_N:
+ fprintf(stream,"@(r0,r%d)", rn);
+ break;
+ case A_IND_R0_REG_M:
+ fprintf(stream,"@(r0,r%d)", rm);
+ break;
+ case A_DISP_GBR:
+ fprintf(stream,"@(%d,gbr)",imm);
+ break;
+ case A_R0_GBR:
+ fprintf(stream,"@(r0,gbr)");
+ break;
+ case A_BDISP12:
+ case A_BDISP8:
+ (*info->print_address_func) (imm + memaddr, info);
+ break;
+ case A_SR:
+ fprintf(stream,"sr");
+ break;
+ case A_GBR:
+ fprintf(stream,"gbr");
+ break;
+ case A_VBR:
+ fprintf(stream,"vbr");
+ break;
+ case A_MACH:
+ fprintf(stream,"mach");
+ break;
+ case A_MACL:
+ fprintf(stream,"macl");
+ break;
+ case A_PR:
+ fprintf(stream,"pr");
+ break;
+/* start-sanitize-sh3e */
+ case F_REG_N:
+ fprintf(stream,"fr%d", rn);
+ break;
+ case F_REG_M:
+ fprintf(stream,"fr%d", rm);
+ break;
+ case FPSCR_M:
+ case FPSCR_N:
+ fprintf(stream,"fpscr");
+ break;
+ case FPUL_M:
+ case FPUL_N:
+ fprintf(stream,"fpul");
+ break;
+/* end-sanitize-sh3e */
+ default:
+ abort();
+ }
+
+ }
+ if (!(info->flags & 1)
+ && (op->name[0] == 'j'
+ || (op->name[0] == 'b'
+ && (op->name[1] == 'r'
+ || op->name[1] == 's'))
+ || (op->name[0] == 'r' && op->name[1] == 't')
+ || (op->name[0] == 'b' && op->name[2] == '.')))
+ {
+ info->flags |= 1;
+ fprintf(stream,"\t(slot "); print_insn_shx(memaddr +2, info);
+ info->flags &= ~1;
+ fprintf(stream,")");
+ return 4;
+ }
+
+ return 2;
+ fail:
+ ;
+
+ }
+ fprintf(stream,".word 0x%x%x%x%x", nibs[0], nibs[1], nibs[2], nibs[3]);
+ return 2;
+}
+
+
+int
+print_insn_shl(memaddr, info)
+ bfd_vma memaddr;
+ struct disassemble_info *info;
+{
+ int r;
+ info->flags = LITTLE_BIT;
+ r =print_insn_shx (memaddr, info);
+ return r;
+}
+
+int
+print_insn_sh(memaddr, info)
+ bfd_vma memaddr;
+ struct disassemble_info *info;
+{
+ int r;
+ info->flags = 0;
+ r =print_insn_shx (memaddr, info);
+ return r;
+}
generated by cgit v1.1 at 2024-12-15 14:56:45 +0000