| /* Print Z80, Z180, EZ80 and R800 instructions |
| Copyright (C) 2005-2021 Free Software Foundation, Inc. |
| Contributed by Arnold Metselaar <arnold_m@operamail.com> |
| |
| This file is part of the GNU opcodes library. |
| |
| This library 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 3, or (at your option) |
| any later version. |
| |
| It 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., 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #include "sysdep.h" |
| #include "disassemble.h" |
| #include <stdio.h> |
| |
| struct buffer |
| { |
| bfd_vma base; |
| int n_fetch; |
| int n_used; |
| signed char data[6]; |
| long inss; /* instruction set bit mask, taken from bfd_mach */ |
| int nn_len; /* address length: 2 - Z80 mode, 3 - ADL mode*/ |
| } ; |
| |
| typedef int (*func)(struct buffer *, disassemble_info *, const char *); |
| |
| struct tab_elt |
| { |
| unsigned char val; |
| unsigned char mask; |
| func fp; |
| const char * text; |
| unsigned inss; /* bit mask of supported bfd_mach_* or 0 for all mach */ |
| } ; |
| |
| #define INSS_ALL 0 |
| #define INSS_Z80 ((1 << bfd_mach_z80) | (1 << bfd_mach_z80strict) | (1 << bfd_mach_z80full)) |
| #define INSS_R800 (1 << bfd_mach_r800) |
| #define INSS_GBZ80 (1 << bfd_mach_gbz80) |
| #define INSS_Z180 (1 << bfd_mach_z180) |
| #define INSS_EZ80_Z80 (1 << bfd_mach_ez80_z80) |
| #define INSS_EZ80_ADL (1 << bfd_mach_ez80_adl) |
| #define INSS_EZ80 (INSS_EZ80_ADL | INSS_EZ80_Z80) |
| #define INSS_Z80N (1 << bfd_mach_z80n) |
| |
| #define TXTSIZ 24 |
| /* Names of 16-bit registers. */ |
| static const char * rr_str[] = { "bc", "de", "hl", "sp" }; |
| /* Names of 8-bit registers. */ |
| static const char * r_str[] = { "b", "c", "d", "e", "h", "l", "(hl)", "a" }; |
| /* Texts for condition codes. */ |
| static const char * cc_str[] = { "nz", "z", "nc", "c", "po", "pe", "p", "m" }; |
| /* Instruction names for 8-bit arithmetic, operand "a" is often implicit */ |
| static const char * arit_str[] = |
| { |
| "add a,", "adc a,", "sub ", "sbc a,", "and ", "xor ", "or ", "cp " |
| } ; |
| static const char * arit_str_gbz80[] = |
| { |
| "add a,", "adc a,", "sub a,", "sbc a,", "and ", "xor ", "or ", "cp " |
| } ; |
| static const char * arit_str_ez80[] = |
| { |
| "add a,", "adc a,", "sub a,", "sbc a,", "and a,", "xor a,", "or a,", "cp a," |
| } ; |
| |
| |
| static int |
| mach_inst (struct buffer *buf, const struct tab_elt *p) |
| { |
| return !p->inss || (p->inss & buf->inss); |
| } |
| |
| static int |
| fetch_data (struct buffer *buf, disassemble_info * info, int n) |
| { |
| int r; |
| |
| if (buf->n_fetch + n > (int)sizeof (buf->data)) |
| abort (); |
| |
| r = info->read_memory_func (buf->base + buf->n_fetch, |
| (unsigned char*) buf->data + buf->n_fetch, |
| n, info); |
| if (r == 0) |
| buf->n_fetch += n; |
| else |
| info->memory_error_func (r, buf->base + buf->n_fetch, info); |
| return !r; |
| } |
| |
| static int |
| prt (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| info->fprintf_func (info->stream, "%s", txt); |
| buf->n_used = buf->n_fetch; |
| return 1; |
| } |
| |
| static int |
| prt_e (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char e; |
| int target_addr; |
| |
| if (fetch_data (buf, info, 1)) |
| { |
| e = buf->data[1]; |
| target_addr = (buf->base + 2 + e) & 0xffff; |
| buf->n_used = buf->n_fetch; |
| info->fprintf_func (info->stream, "%s0x%04x", txt, target_addr); |
| } |
| else |
| buf->n_used = -1; |
| |
| return buf->n_used; |
| } |
| |
| static int |
| jr_cc (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| |
| snprintf (mytxt, TXTSIZ, txt, cc_str[(buf->data[0] >> 3) & 3]); |
| return prt_e (buf, info, mytxt); |
| } |
| |
| static int |
| prt_nn (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| int nn; |
| unsigned char *p; |
| int i; |
| |
| p = (unsigned char*) buf->data + buf->n_fetch; |
| if (fetch_data (buf, info, buf->nn_len)) |
| { |
| nn = 0; |
| i = buf->nn_len; |
| while (i--) |
| nn = nn * 0x100 + p[i]; |
| info->fprintf_func (info->stream, txt, nn); |
| buf->n_used = buf->n_fetch; |
| } |
| else |
| buf->n_used = -1; |
| return buf->n_used; |
| } |
| |
| static int |
| prt_rr_nn (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| int rr; |
| |
| rr = (buf->data[buf->n_fetch - 1] >> 4) & 3; |
| snprintf (mytxt, TXTSIZ, txt, rr_str[rr]); |
| return prt_nn (buf, info, mytxt); |
| } |
| |
| static int |
| prt_rr (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| info->fprintf_func (info->stream, "%s%s", txt, |
| rr_str[(buf->data[buf->n_fetch - 1] >> 4) & 3]); |
| buf->n_used = buf->n_fetch; |
| return buf->n_used; |
| } |
| |
| static int |
| prt_n (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| int n; |
| unsigned char *p; |
| |
| p = (unsigned char*) buf->data + buf->n_fetch; |
| |
| if (fetch_data (buf, info, 1)) |
| { |
| n = p[0]; |
| info->fprintf_func (info->stream, txt, n); |
| buf->n_used = buf->n_fetch; |
| } |
| else |
| buf->n_used = -1; |
| |
| return buf->n_used; |
| } |
| |
| static int |
| prt_n_n (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| int n; |
| unsigned char *p; |
| |
| p = (unsigned char*) buf->data + buf->n_fetch; |
| |
| if (fetch_data (buf, info, 1)) |
| { |
| n = p[0]; |
| snprintf (mytxt, TXTSIZ, txt, n); |
| buf->n_used = buf->n_fetch; |
| } |
| else |
| buf->n_used = -1; |
| |
| return prt_n (buf, info, mytxt); |
| } |
| |
| static int |
| prt_r_n (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| int r; |
| |
| r = (buf->data[buf->n_fetch - 1] >> 3) & 7; |
| snprintf (mytxt, TXTSIZ, txt, r_str[r]); |
| return prt_n (buf, info, mytxt); |
| } |
| |
| static int |
| ld_r_n (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| |
| snprintf (mytxt, TXTSIZ, txt, r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7]); |
| return prt_n (buf, info, mytxt); |
| } |
| |
| static int |
| prt_r (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| info->fprintf_func (info->stream, txt, |
| r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7]); |
| buf->n_used = buf->n_fetch; |
| return buf->n_used; |
| } |
| |
| static int |
| ld_r_r (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| info->fprintf_func (info->stream, txt, |
| r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7], |
| r_str[buf->data[buf->n_fetch - 1] & 7]); |
| buf->n_used = buf->n_fetch; |
| return buf->n_used; |
| } |
| |
| static int |
| prt_d (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| int d; |
| signed char *p; |
| |
| p = buf->data + buf->n_fetch; |
| |
| if (fetch_data (buf, info, 1)) |
| { |
| d = p[0]; |
| info->fprintf_func (info->stream, txt, d); |
| buf->n_used = buf->n_fetch; |
| } |
| else |
| buf->n_used = -1; |
| |
| return buf->n_used; |
| } |
| |
| static int |
| prt_rr_d (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| int rr; |
| |
| rr = (buf->data[buf->n_fetch - 1] >> 4) & 3; |
| if (rr == 3) /* SP is not supported */ |
| return 0; |
| |
| snprintf (mytxt, TXTSIZ, txt, rr_str[rr]); |
| return prt_d (buf, info, mytxt); |
| } |
| |
| static int |
| arit_r (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| const char * const *arit; |
| |
| if (buf->inss & INSS_EZ80) |
| arit = arit_str_ez80; |
| else if (buf->inss & INSS_GBZ80) |
| arit = arit_str_gbz80; |
| else |
| arit = arit_str; |
| |
| info->fprintf_func (info->stream, txt, |
| arit[(buf->data[buf->n_fetch - 1] >> 3) & 7], |
| r_str[buf->data[buf->n_fetch - 1] & 7]); |
| buf->n_used = buf->n_fetch; |
| return buf->n_used; |
| } |
| |
| static int |
| prt_cc (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| info->fprintf_func (info->stream, "%s%s", txt, |
| cc_str[(buf->data[0] >> 3) & 7]); |
| buf->n_used = buf->n_fetch; |
| return buf->n_used; |
| } |
| |
| static int |
| pop_rr (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| static char *rr_stack[] = { "bc","de","hl","af"}; |
| |
| info->fprintf_func (info->stream, "%s %s", txt, |
| rr_stack[(buf->data[0] >> 4) & 3]); |
| buf->n_used = buf->n_fetch; |
| return buf->n_used; |
| } |
| |
| |
| static int |
| jp_cc_nn (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| |
| snprintf (mytxt,TXTSIZ, |
| "%s%s,0x%%04x", txt, cc_str[(buf->data[0] >> 3) & 7]); |
| return prt_nn (buf, info, mytxt); |
| } |
| |
| static int |
| arit_n (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| const char * const *arit; |
| |
| if (buf->inss & INSS_EZ80) |
| arit = arit_str_ez80; |
| else if (buf->inss & INSS_GBZ80) |
| arit = arit_str_gbz80; |
| else |
| arit = arit_str; |
| |
| snprintf (mytxt,TXTSIZ, txt, arit[(buf->data[0] >> 3) & 7]); |
| return prt_n (buf, info, mytxt); |
| } |
| |
| static int |
| rst (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| info->fprintf_func (info->stream, txt, buf->data[0] & 0x38); |
| buf->n_used = buf->n_fetch; |
| return buf->n_used; |
| } |
| |
| |
| static int |
| cis (struct buffer *buf, disassemble_info * info, const char *txt ATTRIBUTE_UNUSED) |
| { |
| static char * opar[] = { "ld", "cp", "in", "out" }; |
| char * op; |
| char c; |
| |
| c = buf->data[1]; |
| op = ((0x13 & c) == 0x13) ? "ot" : (opar[c & 3]); |
| info->fprintf_func (info->stream, |
| "%s%c%s", op, |
| (c & 0x08) ? 'd' : 'i', |
| (c & 0x10) ? "r" : ""); |
| buf->n_used = 2; |
| return buf->n_used; |
| } |
| |
| static int |
| cism (struct buffer *buf, disassemble_info * info, const char *txt ATTRIBUTE_UNUSED) |
| { |
| static char * opar[] = { "in%cm%s", "ot%cm%s" }; |
| char * op; |
| char c; |
| |
| c = buf->data[1]; |
| op = opar[c & 1]; |
| info->fprintf_func (info->stream, |
| op, |
| (c & 0x08) ? 'd' : 'i', |
| (c & 0x10) ? "r" : ""); |
| buf->n_used = 2; |
| return buf->n_used; |
| } |
| |
| static int |
| dump (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| int i; |
| |
| info->fprintf_func (info->stream, "defb "); |
| for (i = 0; txt[i]; ++i) |
| info->fprintf_func (info->stream, i ? ", 0x%02x" : "0x%02x", |
| (unsigned char) buf->data[i]); |
| buf->n_used = i; |
| return buf->n_used; |
| } |
| |
| /* Table to disassemble machine codes with prefix 0xED. */ |
| static const struct tab_elt opc_ed[] = |
| { |
| { 0x30, 0xFF, prt, "mul d,e", INSS_Z80N }, |
| { 0x31, 0xFF, prt, "add hl,a", INSS_Z80N }, |
| { 0x31, 0xFF, prt, "ld iy,(hl)", INSS_EZ80 }, |
| { 0x30, 0xFE, dump, "xx", INSS_ALL }, /* do not move this line */ |
| { 0x00, 0xC7, prt_r_n, "in0 %s,(0x%%02x)", INSS_Z180|INSS_EZ80 }, |
| { 0x01, 0xC7, prt_r_n, "out0 (0x%%02x),%s", INSS_Z180|INSS_EZ80 }, |
| { 0x32, 0xFF, prt_d, "lea ix,ix%+d", INSS_EZ80 }, |
| { 0x33, 0xFF, prt_d, "lea iy,iy%+d", INSS_EZ80 }, |
| { 0x02, 0xCF, prt_rr_d, "lea %s,ix%%+d", INSS_EZ80 }, |
| { 0x03, 0xCF, prt_rr_d, "lea %s,iy%%+d", INSS_EZ80 }, |
| { 0x04, 0xC7, prt_r, "tst %s", INSS_Z180}, |
| { 0x04, 0xC7, prt_r, "tst a,%s", INSS_EZ80 }, |
| { 0x07, 0xFF, prt, "ld bc,(hl)", INSS_EZ80 }, |
| { 0x3F, 0xFF, prt, "ld (hl),ix", INSS_EZ80 }, |
| { 0x0F, 0xCF, prt_rr, "ld (hl),", INSS_EZ80 }, |
| { 0x17, 0xFF, prt, "ld de,(hl)", INSS_EZ80 }, |
| { 0x23, 0xFF, prt, "swapnib", INSS_Z80N }, |
| { 0x24, 0xFF, prt, "mirror", INSS_Z80N }, |
| { 0x27, 0xFF, prt, "ld hl,(hl)", INSS_EZ80 }, |
| { 0x27, 0xFF, prt_n, "test 0x%02x", INSS_Z80N }, |
| { 0x28, 0xFF, prt, "bsla de,b", INSS_Z80N }, |
| { 0x29, 0xFF, prt, "bsra de,b", INSS_Z80N }, |
| { 0x2A, 0xFF, prt, "bsrl de,b", INSS_Z80N }, |
| { 0x2B, 0xFF, prt, "bsrf de,b", INSS_Z80N }, |
| { 0x2C, 0xFF, prt, "bslc de,b", INSS_Z80N }, |
| { 0x32, 0xFF, prt, "add de,a", INSS_Z80N }, |
| { 0x33, 0xFF, prt, "add bc,a", INSS_Z80N }, |
| { 0x34, 0xFF, prt_nn, "add hl,0x%04x", INSS_Z80N }, |
| { 0x35, 0xFF, prt_nn, "add de,0x%04x", INSS_Z80N }, |
| { 0x36, 0xFF, prt_nn, "add bc,0x%04x", INSS_Z80N }, |
| { 0x37, 0xFF, prt, "ld ix,(hl)", INSS_EZ80 }, |
| { 0x3E, 0xFF, prt, "ld (hl),iy", INSS_EZ80 }, |
| { 0x70, 0xFF, prt, "in f,(c)", INSS_Z80 | INSS_R800 | INSS_Z80N }, |
| { 0x70, 0xFF, dump, "xx", INSS_ALL }, |
| { 0x40, 0xC7, prt_r, "in %s,(bc)", INSS_EZ80 }, |
| { 0x40, 0xC7, prt_r, "in %s,(c)", INSS_ALL }, |
| { 0x71, 0xFF, prt, "out (c),0", INSS_Z80 | INSS_Z80N }, |
| { 0x71, 0xFF, dump, "xx", INSS_ALL }, |
| { 0x41, 0xC7, prt_r, "out (bc),%s", INSS_EZ80 }, |
| { 0x41, 0xC7, prt_r, "out (c),%s", INSS_ALL }, |
| { 0x42, 0xCF, prt_rr, "sbc hl,", INSS_ALL }, |
| { 0x43, 0xCF, prt_rr_nn, "ld (0x%%04x),%s", INSS_ALL }, |
| { 0x44, 0xFF, prt, "neg", INSS_ALL }, |
| { 0x45, 0xFF, prt, "retn", INSS_ALL }, |
| { 0x46, 0xFF, prt, "im 0", INSS_ALL }, |
| { 0x47, 0xFF, prt, "ld i,a", INSS_ALL }, |
| { 0x4A, 0xCF, prt_rr, "adc hl,", INSS_ALL }, |
| { 0x4B, 0xCF, prt_rr_nn, "ld %s,(0x%%04x)", INSS_ALL }, |
| { 0x4C, 0xCF, prt_rr, "mlt ", INSS_Z180|INSS_EZ80 }, |
| { 0x4D, 0xFF, prt, "reti", INSS_ALL }, |
| { 0x4F, 0xFF, prt, "ld r,a", INSS_ALL }, |
| { 0x54, 0xFF, prt_d, "lea ix,iy%+d", INSS_EZ80 }, |
| { 0x55, 0xFF, prt_d, "lea iy,ix%+d", INSS_EZ80 }, |
| { 0x56, 0xFF, prt, "im 1", INSS_ALL }, |
| { 0x57, 0xFF, prt, "ld a,i", INSS_ALL }, |
| { 0x5E, 0xFF, prt, "im 2", INSS_ALL }, |
| { 0x5F, 0xFF, prt, "ld a,r", INSS_ALL }, |
| { 0x64, 0xFF, prt_n, "tst 0x%02x", INSS_Z180 }, |
| { 0x64, 0xFF, prt_n, "tst a,0x%02x", INSS_EZ80 }, |
| { 0x65, 0xFF, prt_d, "pea ix%+d", INSS_EZ80 }, |
| { 0x66, 0xFF, prt_d, "pea iy%+d", INSS_EZ80 }, |
| { 0x67, 0xFF, prt, "rrd", INSS_ALL }, |
| { 0x6D, 0xFF, prt, "ld mb,a", INSS_EZ80 }, |
| { 0x6E, 0xFF, prt, "ld a,mb", INSS_EZ80 }, |
| { 0x6F, 0xFF, prt, "rld", INSS_ALL }, |
| { 0x74, 0xFF, prt_n, "tstio 0x%02x", INSS_Z180|INSS_EZ80 }, |
| { 0x76, 0xFF, prt, "slp", INSS_Z180|INSS_EZ80 }, |
| { 0x7D, 0xFF, prt, "stmix", INSS_EZ80 }, |
| { 0x7E, 0xFF, prt, "rsmix", INSS_EZ80 }, |
| { 0x82, 0xE6, cism, "", INSS_Z180|INSS_EZ80 }, |
| { 0x84, 0xFF, prt, "ini2", INSS_EZ80 }, |
| { 0x8A, 0xFF, prt_n_n, "push 0x%02x%%02x", INSS_Z80N }, |
| { 0x8C, 0xFF, prt, "ind2", INSS_EZ80 }, |
| { 0x90, 0xFF, prt, "outinb", INSS_Z80N }, |
| { 0x91, 0xFF, prt_n_n, "nextreg 0x%02x,0x%%02x", INSS_Z80N }, |
| { 0x92, 0xFF, prt_n, "nextreg 0x%02x,a", INSS_Z80N }, |
| { 0x93, 0xFF, prt, "pixeldn", INSS_Z80N }, |
| { 0x94, 0xFF, prt, "ini2r", INSS_EZ80 }, |
| { 0x94, 0xFF, prt, "pixelad", INSS_Z80N }, |
| { 0x95, 0xFF, prt, "setae", INSS_Z80N }, |
| { 0x98, 0xFF, prt, "jp (c)", INSS_Z80N }, |
| { 0x9c, 0xFF, prt, "ind2r", INSS_EZ80 }, |
| { 0xA0, 0xE4, cis, "", INSS_ALL }, |
| { 0xA4, 0xFF, prt, "outi2", INSS_EZ80 }, |
| { 0xA4, 0xFF, prt, "ldix", INSS_Z80N }, |
| { 0xAC, 0xFF, prt, "outd2", INSS_EZ80 }, |
| { 0xAC, 0xFF, prt, "lddx", INSS_Z80N }, |
| { 0xA5, 0xFF, prt, "ldws", INSS_Z80N }, |
| { 0xB4, 0xFF, prt, "oti2r", INSS_EZ80 }, |
| { 0xB4, 0xFF, prt, "ldirx", INSS_Z80N }, |
| { 0xB7, 0xFF, prt, "ldpirx", INSS_Z80N }, |
| { 0xBC, 0xFF, prt, "otd2r", INSS_EZ80 }, |
| { 0xBC, 0xFF, prt, "lddrx", INSS_Z80N }, |
| { 0xC2, 0xFF, prt, "inirx", INSS_EZ80 }, |
| { 0xC3, 0xFF, prt, "otirx", INSS_EZ80 }, |
| { 0xC7, 0xFF, prt, "ld i,hl", INSS_EZ80 }, |
| { 0xCA, 0xFF, prt, "indrx", INSS_EZ80 }, |
| { 0xCB, 0xFF, prt, "otdrx", INSS_EZ80 }, |
| { 0xC3, 0xFF, prt, "muluw hl,bc", INSS_R800 }, |
| { 0xC5, 0xE7, prt_r, "mulub a,%s", INSS_R800 }, |
| { 0xD7, 0xFF, prt, "ld hl,i", INSS_EZ80 }, |
| { 0xF3, 0xFF, prt, "muluw hl,sp", INSS_R800 }, |
| { 0x00, 0x00, dump, "xx", INSS_ALL } |
| }; |
| |
| static int |
| pref_ed (struct buffer *buf, disassemble_info *info, |
| const char *txt ATTRIBUTE_UNUSED) |
| { |
| const struct tab_elt *p; |
| |
| if (fetch_data (buf, info, 1)) |
| { |
| for (p = opc_ed; p->val != (buf->data[1] & p->mask) || !mach_inst (buf, p); ++p) |
| ; |
| p->fp (buf, info, p->text); |
| } |
| else |
| buf->n_used = -1; |
| |
| return buf->n_used; |
| } |
| |
| /* Instruction names for the instructions addressing single bits. */ |
| static char *cb1_str[] = { "", "bit", "res", "set"}; |
| /* Instruction names for shifts and rotates. */ |
| static char *cb2_str[] = |
| { |
| "rlc", "rrc", "rl", "rr", "sla", "sra", "sli", "srl" |
| }; |
| |
| static int |
| pref_cb (struct buffer *buf, disassemble_info *info, |
| const char *txt ATTRIBUTE_UNUSED) |
| { |
| const char *op_txt; |
| int idx; |
| if (fetch_data (buf, info, 1)) |
| { |
| buf->n_used = 2; |
| if ((buf->data[1] & 0xc0) == 0) |
| { |
| idx = (buf->data[1] >> 3) & 7; |
| if ((buf->inss & INSS_GBZ80) && (idx == 6)) |
| op_txt = "swap"; |
| else |
| op_txt = cb2_str[idx]; |
| info->fprintf_func (info->stream, "%s %s", |
| op_txt, |
| r_str[buf->data[1] & 7]); |
| } |
| else |
| info->fprintf_func (info->stream, "%s %d,%s", |
| cb1_str[(buf->data[1] >> 6) & 3], |
| (buf->data[1] >> 3) & 7, |
| r_str[buf->data[1] & 7]); |
| } |
| else |
| buf->n_used = -1; |
| |
| return buf->n_used; |
| } |
| |
| static int |
| addvv (struct buffer * buf, disassemble_info * info, const char *txt) |
| { |
| info->fprintf_func (info->stream, "add %s,%s", txt, txt); |
| |
| return buf->n_used = buf->n_fetch; |
| } |
| |
| static int |
| ld_v_v (struct buffer * buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| |
| snprintf (mytxt, TXTSIZ, "ld %s%%s,%s%%s", txt, txt); |
| return ld_r_r (buf, info, mytxt); |
| } |
| |
| static int |
| prt_d_n (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| int d; |
| signed char *p; |
| |
| p = buf->data + buf->n_fetch; |
| |
| if (fetch_data (buf, info, 1)) |
| { |
| d = p[0]; |
| snprintf (mytxt, TXTSIZ, txt, d); |
| return prt_n (buf, info, mytxt); |
| } |
| else |
| buf->n_used = -1; |
| |
| return buf->n_used; |
| } |
| |
| static int |
| arit_d (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| signed char c; |
| const char * const *arit; |
| |
| arit = (buf->inss & INSS_EZ80) ? arit_str_ez80 : arit_str; |
| c = buf->data[buf->n_fetch - 1]; |
| snprintf (mytxt, TXTSIZ, txt, arit[(c >> 3) & 7]); |
| return prt_d (buf, info, mytxt); |
| } |
| |
| static int |
| ld_r_d (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| signed char c; |
| |
| c = buf->data[buf->n_fetch - 1]; |
| snprintf (mytxt, TXTSIZ, txt, r_str[(c >> 3) & 7]); |
| return prt_d (buf, info, mytxt); |
| } |
| |
| static int |
| ld_d_r (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| signed char c; |
| |
| c = buf->data[buf->n_fetch - 1]; |
| snprintf (mytxt, TXTSIZ, txt, r_str[c & 7]); |
| return prt_d (buf, info, mytxt); |
| } |
| |
| static int |
| ld_ii_ii (struct buffer *buf, disassemble_info * info, const char *txt) |
| { |
| char mytxt[TXTSIZ]; |
| signed char c; |
| int p; |
| static const char *ii[2] = { "ix", "iy" }; |
| |
| p = (buf->data[buf->n_fetch - 2] == (signed char) 0xdd) ? 0 : 1; |
| c = buf->data[buf->n_fetch - 1]; |
| if ((c & 0x07) != 0x07) |
| p = 1 - p; /* 0 -> 1, 1 -> 0 */ |
| snprintf (mytxt, TXTSIZ, txt, ii[p]); |
| return prt_d (buf, info, mytxt); |
| } |
| |
| static int |
| pref_xd_cb (struct buffer * buf, disassemble_info * info, const char *txt) |
| { |
| if (fetch_data (buf, info, 2)) |
| { |
| int d; |
| char arg[TXTSIZ]; |
| signed char *p; |
| |
| buf->n_used = 4; |
| p = buf->data; |
| d = p[2]; |
| |
| if (((p[3] & 0xC0) == 0x40) || ((p[3] & 7) == 0x06)) |
| snprintf (arg, TXTSIZ, "(%s%+d)", txt, d); |
| else |
| snprintf (arg, TXTSIZ, "(%s%+d),%s", txt, d, r_str[p[3] & 7]); |
| |
| if ((p[3] & 0xc0) == 0) |
| info->fprintf_func (info->stream, "%s %s", |
| cb2_str[(buf->data[3] >> 3) & 7], |
| arg); |
| else |
| info->fprintf_func (info->stream, "%s %d,%s", |
| cb1_str[(buf->data[3] >> 6) & 3], |
| (buf->data[3] >> 3) & 7, |
| arg); |
| } |
| else |
| buf->n_used = -1; |
| |
| return buf->n_used; |
| } |
| |
| /* Table to disassemble machine codes with prefix 0xDD or 0xFD. */ |
| static struct tab_elt opc_ind[] = |
| { |
| { 0x07, 0xFF, prt_d, "ld bc,(%s%%+d)", INSS_EZ80 }, |
| { 0x0F, 0xFF, prt_d, "ld (%s%%+d),bc", INSS_EZ80 }, |
| { 0x17, 0xFF, prt_d, "ld de,(%s%%+d)", INSS_EZ80 }, |
| { 0x1F, 0xFF, prt_d, "ld (%s%%+d),de", INSS_EZ80 }, |
| { 0x24, 0xF7, prt_r, "inc %s%%s", INSS_ALL }, |
| { 0x25, 0xF7, prt_r, "dec %s%%s", INSS_ALL }, |
| { 0x26, 0xF7, ld_r_n, "ld %s%%s,0x%%%%02x", INSS_ALL }, |
| { 0x27, 0xFF, prt_d, "ld hl,(%s%%+d)", INSS_EZ80 }, |
| { 0x2F, 0xFF, prt_d, "ld (%s%%+d),hl", INSS_EZ80 }, |
| { 0x21, 0xFF, prt_nn, "ld %s,0x%%04x", INSS_ALL }, |
| { 0x22, 0xFF, prt_nn, "ld (0x%%04x),%s", INSS_ALL }, |
| { 0x2A, 0xFF, prt_nn, "ld %s,(0x%%04x)", INSS_ALL }, |
| { 0x23, 0xFF, prt, "inc %s", INSS_ALL }, |
| { 0x2B, 0xFF, prt, "dec %s", INSS_ALL }, |
| { 0x29, 0xFF, addvv, "%s", INSS_ALL }, |
| { 0x31, 0xFF, ld_ii_ii, "ld %%s,(%s%%%%+d)", INSS_EZ80 }, |
| { 0x37, 0xFF, ld_ii_ii, "ld %%s,(%s%%%%+d)", INSS_EZ80 }, |
| { 0x3E, 0xFE, ld_ii_ii, "ld (%s%%%%+d),%%s", INSS_EZ80 }, |
| { 0x09, 0xCF, prt_rr, "add %s,", INSS_ALL }, |
| { 0x34, 0xFF, prt_d, "inc (%s%%+d)", INSS_ALL }, |
| { 0x35, 0xFF, prt_d, "dec (%s%%+d)", INSS_ALL }, |
| { 0x36, 0xFF, prt_d_n, "ld (%s%%+d),0x%%%%02x", INSS_ALL }, |
| |
| { 0x76, 0xFF, dump, "h", INSS_ALL }, |
| { 0x46, 0xC7, ld_r_d, "ld %%s,(%s%%%%+d)", INSS_ALL }, |
| { 0x70, 0xF8, ld_d_r, "ld (%s%%%%+d),%%s", INSS_ALL }, |
| { 0x64, 0xF6, ld_v_v, "%s", INSS_ALL }, |
| { 0x60, 0xF0, ld_r_r, "ld %s%%s,%%s", INSS_ALL }, |
| { 0x44, 0xC6, ld_r_r, "ld %%s,%s%%s", INSS_ALL }, |
| |
| { 0x86, 0xC7, arit_d, "%%s(%s%%%%+d)", INSS_ALL }, |
| { 0x84, 0xC6, arit_r, "%%s%s%%s", INSS_ALL }, |
| |
| { 0xE1, 0xFF, prt, "pop %s", INSS_ALL }, |
| { 0xE5, 0xFF, prt, "push %s", INSS_ALL }, |
| { 0xCB, 0xFF, pref_xd_cb, "%s", INSS_ALL }, |
| { 0xE3, 0xFF, prt, "ex (sp),%s", INSS_ALL }, |
| { 0xE9, 0xFF, prt, "jp (%s)", INSS_ALL }, |
| { 0xF9, 0xFF, prt, "ld sp,%s", INSS_ALL }, |
| { 0x00, 0x00, dump, "?", INSS_ALL }, |
| } ; |
| |
| static int |
| pref_ind (struct buffer *buf, disassemble_info *info, const char *txt) |
| { |
| if (fetch_data (buf, info, 1)) |
| { |
| char mytxt[TXTSIZ]; |
| struct tab_elt *p; |
| |
| for (p = opc_ind; p->val != (buf->data[1] & p->mask) || !mach_inst (buf, p); ++p) |
| ; |
| snprintf (mytxt, TXTSIZ, p->text, txt); |
| p->fp (buf, info, mytxt); |
| } |
| else |
| buf->n_used = -1; |
| |
| return buf->n_used; |
| } |
| |
| static int |
| print_insn_z80_buf (struct buffer *buf, disassemble_info *info); |
| |
| static int |
| suffix (struct buffer *buf, disassemble_info *info, const char *txt) |
| { |
| char mybuf[TXTSIZ*4]; |
| fprintf_ftype old_fprintf; |
| void *old_stream; |
| char *p; |
| |
| switch (txt[2]) |
| { |
| case 'l': /* SIL or LIL */ |
| buf->nn_len = 3; |
| break; |
| case 's': /* SIS or LIS */ |
| buf->nn_len = 2; |
| break; |
| default: |
| abort (); |
| } |
| if (!fetch_data (buf, info, 1) |
| || buf->data[1] == 0x40 |
| || buf->data[1] == 0x49 |
| || buf->data[1] == 0x52 |
| || buf->data[1] == 0x5b) |
| { |
| /* Double prefix, or end of data. */ |
| info->fprintf_func (info->stream, ".db 0x%02x ; %s", (unsigned)buf->data[0], txt); |
| buf->n_used = 1; |
| return buf->n_used; |
| } |
| |
| old_fprintf = info->fprintf_func; |
| old_stream = info->stream; |
| info->fprintf_func = (fprintf_ftype) &sprintf; |
| info->stream = mybuf; |
| mybuf[0] = 0; |
| buf->base++; |
| if (print_insn_z80_buf (buf, info) >= 0) |
| buf->n_used++; |
| info->fprintf_func = old_fprintf; |
| info->stream = old_stream; |
| |
| for (p = mybuf; *p; ++p) |
| if (*p == ' ') |
| break; |
| if (*p) |
| { |
| *p++ = '\0'; |
| info->fprintf_func (info->stream, "%s.%s %s", mybuf, txt, p); |
| } |
| else |
| info->fprintf_func (info->stream, "%s.%s", mybuf, txt); |
| return buf->n_used; |
| } |
| |
| /* Table to disassemble machine codes without prefix. */ |
| static const struct tab_elt |
| opc_main[] = |
| { |
| { 0x00, 0xFF, prt, "nop", INSS_ALL }, |
| { 0x01, 0xCF, prt_rr_nn, "ld %s,0x%%04x", INSS_ALL }, |
| { 0x02, 0xFF, prt, "ld (bc),a", INSS_ALL }, |
| { 0x03, 0xCF, prt_rr, "inc ", INSS_ALL }, |
| { 0x04, 0xC7, prt_r, "inc %s", INSS_ALL }, |
| { 0x05, 0xC7, prt_r, "dec %s", INSS_ALL }, |
| { 0x06, 0xC7, ld_r_n, "ld %s,0x%%02x", INSS_ALL }, |
| { 0x07, 0xFF, prt, "rlca", INSS_ALL }, |
| { 0x08, 0xFF, prt, "ex af,af'", ~INSS_GBZ80 }, |
| { 0x09, 0xCF, prt_rr, "add hl,", INSS_ALL }, |
| { 0x0A, 0xFF, prt, "ld a,(bc)", INSS_ALL }, |
| { 0x0B, 0xCF, prt_rr, "dec ", INSS_ALL }, |
| { 0x0F, 0xFF, prt, "rrca", INSS_ALL }, |
| { 0x10, 0xFF, prt_e, "djnz ", ~INSS_GBZ80 }, |
| { 0x12, 0xFF, prt, "ld (de),a", INSS_ALL }, |
| { 0x17, 0xFF, prt, "rla", INSS_ALL }, |
| { 0x18, 0xFF, prt_e, "jr ", INSS_ALL }, |
| { 0x1A, 0xFF, prt, "ld a,(de)", INSS_ALL }, |
| { 0x1F, 0xFF, prt, "rra", INSS_ALL }, |
| { 0x20, 0xE7, jr_cc, "jr %s,", INSS_ALL }, |
| { 0x22, 0xFF, prt_nn, "ld (0x%04x),hl", ~INSS_GBZ80 }, |
| { 0x27, 0xFF, prt, "daa", INSS_ALL }, |
| { 0x2A, 0xFF, prt_nn, "ld hl,(0x%04x)", ~INSS_GBZ80 }, |
| { 0x2F, 0xFF, prt, "cpl", INSS_ALL }, |
| { 0x32, 0xFF, prt_nn, "ld (0x%04x),a", INSS_ALL }, |
| { 0x37, 0xFF, prt, "scf", INSS_ALL }, |
| { 0x3A, 0xFF, prt_nn, "ld a,(0x%04x)", INSS_ALL }, |
| { 0x3F, 0xFF, prt, "ccf", INSS_ALL }, |
| |
| { 0x76, 0xFF, prt, "halt", INSS_ALL }, |
| |
| { 0x40, 0xFF, suffix, "sis", INSS_EZ80 }, |
| { 0x49, 0xFF, suffix, "lis", INSS_EZ80 }, |
| { 0x52, 0xFF, suffix, "sil", INSS_EZ80 }, |
| { 0x5B, 0xFF, suffix, "lil", INSS_EZ80 }, |
| |
| { 0x40, 0xC0, ld_r_r, "ld %s,%s", INSS_ALL}, |
| |
| { 0x80, 0xC0, arit_r, "%s%s", INSS_ALL }, |
| |
| { 0xC0, 0xC7, prt_cc, "ret ", INSS_ALL }, |
| { 0xC1, 0xCF, pop_rr, "pop", INSS_ALL }, |
| { 0xC2, 0xC7, jp_cc_nn, "jp ", INSS_ALL }, |
| { 0xC3, 0xFF, prt_nn, "jp 0x%04x", INSS_ALL }, |
| { 0xC4, 0xC7, jp_cc_nn, "call ", INSS_ALL }, |
| { 0xC5, 0xCF, pop_rr, "push", INSS_ALL }, |
| { 0xC6, 0xC7, arit_n, "%s0x%%02x", INSS_ALL }, |
| { 0xC7, 0xC7, rst, "rst 0x%02x", INSS_ALL }, |
| { 0xC9, 0xFF, prt, "ret", INSS_ALL }, |
| { 0xCB, 0xFF, pref_cb, "", INSS_ALL }, |
| { 0xCD, 0xFF, prt_nn, "call 0x%04x", INSS_ALL }, |
| { 0xD3, 0xFF, prt_n, "out (0x%02x),a", ~INSS_GBZ80 }, |
| { 0xD9, 0xFF, prt, "exx", ~INSS_GBZ80 }, |
| { 0xDB, 0xFF, prt_n, "in a,(0x%02x)", ~INSS_GBZ80 }, |
| { 0xDD, 0xFF, pref_ind, "ix", ~INSS_GBZ80 }, |
| { 0xE3, 0xFF, prt, "ex (sp),hl", ~INSS_GBZ80 }, |
| { 0xE9, 0xFF, prt, "jp (hl)", INSS_ALL }, |
| { 0xEB, 0xFF, prt, "ex de,hl", ~INSS_GBZ80 }, |
| { 0xED, 0xFF, pref_ed, "", ~INSS_GBZ80 }, |
| { 0xF3, 0xFF, prt, "di", INSS_ALL }, |
| { 0xF9, 0xFF, prt, "ld sp,hl", INSS_ALL }, |
| { 0xFB, 0xFF, prt, "ei", INSS_ALL }, |
| { 0xFD, 0xFF, pref_ind, "iy", ~INSS_GBZ80 }, |
| { 0x00, 0x00, prt, "????", INSS_ALL }, |
| } ; |
| |
| /* Separate GBZ80 main opcode table due to many differences */ |
| static const struct tab_elt |
| opc_main_gbz80[] = |
| { |
| { 0x00, 0xFF, prt,"nop", INSS_ALL }, |
| { 0x01, 0xCF, prt_rr_nn, "ld %s,0x%%04x", INSS_ALL }, |
| { 0x02, 0xFF, prt, "ld (bc),a", INSS_ALL }, |
| { 0x03, 0xCF, prt_rr, "inc ", INSS_ALL }, |
| { 0x04, 0xC7, prt_r, "inc %s", INSS_ALL }, |
| { 0x05, 0xC7, prt_r, "dec %s", INSS_ALL }, |
| { 0x06, 0xC7, ld_r_n, "ld %s,0x%%02x", INSS_ALL }, |
| { 0x07, 0xFF, prt, "rlca", INSS_ALL }, |
| { 0x08, 0xFF, prt_nn, "ld (0x%04x),sp", INSS_GBZ80 }, |
| { 0x09, 0xCF, prt_rr, "add hl,", INSS_ALL }, |
| { 0x0A, 0xFF, prt, "ld a,(bc)", INSS_ALL }, |
| { 0x0B, 0xCF, prt_rr, "dec ", INSS_ALL }, |
| { 0x0F, 0xFF, prt, "rrca", INSS_ALL }, |
| { 0x10, 0xFF, prt, "stop", INSS_GBZ80 }, |
| { 0x12, 0xFF, prt, "ld (de),a", INSS_ALL }, |
| { 0x17, 0xFF, prt, "rla", INSS_ALL }, |
| { 0x18, 0xFF, prt_e, "jr ", INSS_ALL }, |
| { 0x1A, 0xFF, prt, "ld a,(de)", INSS_ALL }, |
| { 0x1F, 0xFF, prt, "rra", INSS_ALL }, |
| { 0x20, 0xE7, jr_cc, "jr %s,", INSS_ALL }, |
| { 0x22, 0xFF, prt, "ld (hl+),a", INSS_GBZ80 }, |
| { 0x27, 0xFF, prt, "daa", INSS_ALL }, |
| { 0x2A, 0xFF, prt, "ld a,(hl+)", INSS_GBZ80 }, |
| { 0x2F, 0xFF, prt, "cpl", INSS_ALL }, |
| { 0x32, 0xFF, prt, "ld (hl-),a", INSS_GBZ80 }, |
| { 0x37, 0xFF, prt, "scf", INSS_ALL }, |
| { 0x3A, 0xFF, prt, "ld a,(hl-)", INSS_GBZ80 }, |
| { 0x3F, 0xFF, prt, "ccf", INSS_ALL }, |
| { 0x76, 0xFF, prt, "halt", INSS_ALL }, |
| { 0x40, 0xC0, ld_r_r, "ld %s,%s", INSS_ALL}, |
| { 0x80, 0xC0, arit_r, "%s%s", INSS_ALL }, |
| { 0xC0, 0xE7, prt_cc, "ret ", INSS_ALL }, |
| { 0xC1, 0xCF, pop_rr, "pop", INSS_ALL }, |
| { 0xC2, 0xE7, jp_cc_nn, "jp ", INSS_ALL }, |
| { 0xC3, 0xFF, prt_nn, "jp 0x%04x", INSS_ALL }, |
| { 0xC4, 0xE7, jp_cc_nn, "call ", INSS_ALL }, |
| { 0xC5, 0xCF, pop_rr, "push", INSS_ALL }, |
| { 0xC6, 0xC7, arit_n, "%s0x%%02x", INSS_ALL }, |
| { 0xC7, 0xC7, rst, "rst 0x%02x", INSS_ALL }, |
| { 0xC9, 0xFF, prt, "ret", INSS_ALL }, |
| { 0xCB, 0xFF, pref_cb, "", INSS_ALL }, |
| { 0xCD, 0xFF, prt_nn, "call 0x%04x", INSS_ALL }, |
| { 0xD9, 0xFF, prt, "reti", INSS_GBZ80 }, |
| { 0xE0, 0xFF, prt_n, "ldh (0x%02x),a", INSS_GBZ80 }, |
| { 0xE2, 0xFF, prt, "ldh (c),a", INSS_GBZ80 }, |
| { 0xE8, 0xFF, prt_d, "add sp,%d", INSS_GBZ80 }, |
| { 0xE9, 0xFF, prt, "jp (hl)", INSS_ALL }, |
| { 0xEA, 0xFF, prt_nn, "ld (0x%04x),a", INSS_GBZ80 }, |
| { 0xF0, 0xFF, prt_n, "ldh a,(0x%02x)", INSS_GBZ80 }, |
| { 0xF2, 0xFF, prt, "ldh a,(c)", INSS_GBZ80 }, |
| { 0xF3, 0xFF, prt, "di", INSS_ALL }, |
| { 0xF8, 0xFF, prt_d, "ldhl sp,%d", INSS_GBZ80 }, |
| { 0xF9, 0xFF, prt, "ld sp,hl", INSS_ALL }, |
| { 0xFA, 0xFF, prt_nn, "ld a,(0x%04x)", INSS_GBZ80 }, |
| { 0xFB, 0xFF, prt, "ei", INSS_ALL }, |
| { 0x00, 0x00, dump, "?", INSS_ALL }, |
| } ; |
| |
| int |
| print_insn_z80 (bfd_vma addr, disassemble_info * info) |
| { |
| struct buffer buf; |
| |
| buf.base = addr; |
| buf.inss = 1 << info->mach; |
| buf.nn_len = info->mach == bfd_mach_ez80_adl ? 3 : 2; |
| info->bytes_per_line = (buf.inss & INSS_EZ80) ? 6 : 4; /* <ss pp oo nn mm MM> OR <pp oo nn mm> */ |
| |
| return print_insn_z80_buf (&buf, info); |
| } |
| |
| static int |
| print_insn_z80_buf (struct buffer *buf, disassemble_info *info) |
| { |
| const struct tab_elt *p; |
| |
| buf->n_fetch = 0; |
| buf->n_used = 0; |
| if (! fetch_data (buf, info, 1)) |
| return -1; |
| |
| p = (buf->inss & INSS_GBZ80) ? opc_main_gbz80 : opc_main; |
| |
| for (; p->val != (buf->data[0] & p->mask) || !mach_inst (buf, p); ++p) |
| ; |
| p->fp (buf, info, p->text); |
| |
| return buf->n_used; |
| } |