along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
+#include <assert.h>
#include "sysdep.h"
#include "dis-asm.h"
#include "opintl.h"
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned long u32;
-
-#define IFMASK(a,b) ((opcode & (a)) == (b))
-
-static char* SREG_flags = "CZNVSHTI";
-static char* sect94[] = {"COM","NEG","SWAP","INC",0,"ASR","LSR","ROR",
- 0,0,"DEC",0,0,0,0,0};
-static char* sect98[] = {"CBI","SBIC","SBI","SBIS"};
-static char* branchs[] = {
- "BRCS","BREQ","BRMI","BRVS",
- "BRLT","BRHS","BRTS","BRIE",
- "BRCC","BRNE","BRPL","BRVC",
- "BRGE","BRHC","BRTC","BRID"
-};
-
-static char* last4[] = {"BLD","BST","SBRC","SBRS"};
-
-
-static void dispLDD PARAMS ((u16, char *));
-
-static void
-dispLDD (opcode, dest)
- u16 opcode;
- char *dest;
-{
- opcode = (((opcode & 0x2000) >> 8) | ((opcode & 0x0c00) >> 7)
- | (opcode & 7));
- sprintf(dest, "%d", opcode);
-}
-
-
-static void regPP PARAMS ((u16, char *));
-
-static void
-regPP (opcode, dest)
- u16 opcode;
- char *dest;
-{
- opcode = ((opcode & 0x0600) >> 5) | (opcode & 0xf);
- sprintf(dest, "0x%02X", opcode);
-}
-
-
-static void reg50 PARAMS ((u16, char *));
-
-static void
-reg50 (opcode, dest)
- u16 opcode;
- char *dest;
-{
- opcode = (opcode & 0x01f0) >> 4;
- sprintf(dest, "R%d", opcode);
-}
-
-
-static void reg104 PARAMS ((u16, char *));
-
-static void
-reg104 (opcode, dest)
- u16 opcode;
- char *dest;
-{
- opcode = (opcode & 0xf) | ((opcode & 0x0200) >> 5);
- sprintf(dest, "R%d", opcode);
-}
-
-
-static void reg40 PARAMS ((u16, char *));
-
-static void
-reg40 (opcode, dest)
- u16 opcode;
- char *dest;
-{
- opcode = (opcode & 0xf0) >> 4;
- sprintf(dest, "R%d", opcode + 16);
-}
-
-
-static void reg20w PARAMS ((u16, char *));
-
-static void
-reg20w (opcode, dest)
- u16 opcode;
- char *dest;
-{
- opcode = (opcode & 0x30) >> 4;
- sprintf(dest, "R%d", 24 + opcode * 2);
-}
-
-
-static void reg_fmul_d PARAMS ((u16, char *));
-
-static void
-reg_fmul_d (opcode, dest)
- u16 opcode;
- char *dest;
-{
- sprintf(dest, "R%d", 16 + ((opcode >> 4) & 7));
-}
-
-
-static void reg_fmul_r PARAMS ((u16, char *));
-
-static void
-reg_fmul_r (opcode, dest)
- u16 opcode;
- char *dest;
-{
- sprintf(dest, "R%d", 16 + (opcode & 7));
-}
-
-
-static void reg_muls_d PARAMS ((u16, char *));
-
-static void
-reg_muls_d (opcode, dest)
- u16 opcode;
- char *dest;
-{
- sprintf(dest, "R%d", 16 + ((opcode >> 4) & 0xf));
-}
-
-
-static void reg_muls_r PARAMS ((u16, char *));
-
-static void
-reg_muls_r (opcode, dest)
- u16 opcode;
- char *dest;
-{
- sprintf(dest, "R%d", 16 + (opcode & 0xf));
-}
-
-
-static void reg_movw_d PARAMS ((u16, char *));
-
-static void
-reg_movw_d (opcode, dest)
- u16 opcode;
- char *dest;
-{
- sprintf(dest, "R%d", 2 * ((opcode >> 4) & 0xf));
-}
-
-static void reg_movw_r PARAMS ((u16, char *));
-
-static void
-reg_movw_r (opcode, dest)
- u16 opcode;
- char *dest;
-{
- sprintf(dest, "R%d", 2 * (opcode & 0xf));
-}
-
-
-static void lit404 PARAMS ((u16, char *));
-
-static void
-lit404 (opcode, dest)
- u16 opcode;
- char *dest;
+struct avr_opcodes_s
{
- opcode = ((opcode & 0xf00) >> 4) | (opcode & 0xf);
- sprintf(dest, "0x%02X", opcode);
-}
-
+ char *name;
+ char *constraints;
+ char *opcode;
+ int insn_size; /* in words */
+ int isa;
+ unsigned int bin_opcode;
+ unsigned int bin_mask;
+};
-static void lit204 PARAMS ((u16, char *));
+#define AVR_INSN(NAME, CONSTR, OPCODE, SIZE, ISA, BIN) \
+{#NAME, CONSTR, OPCODE, SIZE, ISA, BIN, 0},
-static void
-lit204 (opcode, dest)
- u16 opcode;
- char *dest;
+struct avr_opcodes_s avr_opcodes[] =
{
- opcode = ((opcode & 0xc0) >> 2) | (opcode & 0xf);
- sprintf(dest, "0x%02X", opcode);
-}
+ #include "opcode/avr.h"
+ {NULL, NULL, NULL, 0, 0, 0, 0}
+};
-static void add0fff PARAMS ((u16, char *, int));
+static void avr_operand (unsigned int insn, unsigned int insn2,
+ unsigned int pc, int constraint, char *buf,
+ char *comment, int regs);
static void
-add0fff (op, dest, pc)
- u16 op;
- char *dest;
- int pc;
+avr_operand (insn, insn2, pc, constraint, buf, comment, regs)
+ unsigned int insn;
+ unsigned int insn2;
+ unsigned int pc;
+ int constraint;
+ char *buf;
+ char *comment;
+ int regs;
{
- int rel_addr = (((op & 0xfff) ^ 0x800) - 0x800) * 2;
- sprintf(dest, ".%+-8d ; 0x%06X", rel_addr, pc + 2 + rel_addr);
-}
-
-
-static void add03f8 PARAMS ((u16, char *, int));
+ switch (constraint)
+ {
+ /* Any register operand. */
+ case 'r':
+ if (regs)
+ insn = (insn & 0xf) | ((insn & 0x0200) >> 5); /* source register */
+ else
+ insn = (insn & 0x01f0) >> 4; /* destination register */
+
+ sprintf (buf, "r%d", insn);
+ break;
+
+ case 'd':
+ if (regs)
+ sprintf (buf, "r%d", 16 + (insn & 0xf));
+ else
+ sprintf (buf, "r%d", 16 + ((insn & 0xf0) >> 4));
+ break;
+
+ case 'w':
+ sprintf (buf, "r%d", 24 + ((insn & 0x30) >> 3));
+ break;
+
+ case 'a':
+ if (regs)
+ sprintf (buf, "r%d", 16 + (insn & 7));
+ else
+ sprintf (buf, "r%d", 16 + ((insn >> 4) & 7));
+ break;
-static void
-add03f8 (op, dest, pc)
- u16 op;
- char *dest;
- int pc;
-{
- int rel_addr = ((((op >> 3) & 0x7f) ^ 0x40) - 0x40) * 2;
- sprintf(dest, ".%+-8d ; 0x%06X", rel_addr, pc + 2 + rel_addr);
+ case 'v':
+ if (regs)
+ sprintf (buf, "r%d", (insn & 0xf) * 2);
+ else
+ sprintf (buf, "r%d", ((insn & 0xf0) >> 3));
+ break;
+
+ case 'e':
+ if (insn & 0x2)
+ *buf++ = '-';
+ switch ((insn >> 2) & 0x3)
+ {
+ case 0: *buf++ = 'Z'; break;
+ case 2: *buf++ = 'Y'; break;
+ case 3: *buf++ = 'X'; break;
+ default: buf += sprintf (buf, _ (" unknown register ")); break;
+ }
+ if (insn & 0x1)
+ *buf++ = '+';
+ *buf = '\0';
+ break;
+
+ case 'z':
+ *buf++ = 'Z';
+ if (insn & 0x1)
+ *buf++ = '+';
+ *buf = '\0';
+ break;
+
+ case 'b':
+ {
+ unsigned int x = insn;
+
+ x = (insn & 7);
+ x |= (insn >> 7) & (3 << 3);
+ x |= (insn >> 8) & (1 << 5);
+
+ if (insn & 0x8)
+ *buf++ = 'Y';
+ else
+ *buf++ = 'Z';
+ sprintf (buf, "+%d", x);
+ sprintf (comment, "0x%02x", x);
+ }
+ break;
+
+ case 'h':
+ sprintf (buf, "0x%x%x", (insn & 1) | ((insn & (0x1f << 4)) >> 3), insn2);
+ break;
+
+ case 'L':
+ {
+ int rel_addr = (((insn & 0xfff) ^ 0x800) - 0x800) * 2;
+ sprintf (buf, ".%+-8d", rel_addr);
+ sprintf (comment, "0x%x", pc + 2 + rel_addr);
+ }
+ break;
+
+ case 'l':
+ {
+ int rel_addr = ((((insn >> 3) & 0x7f) ^ 0x40) - 0x40) * 2;
+ sprintf (buf, ".%+-8d", rel_addr);
+ sprintf (comment, "0x%x", pc + 2 + rel_addr);
+ }
+ break;
+
+ case 'i':
+ sprintf (buf, "0x%04X", insn2);
+ break;
+
+ case 'M':
+ sprintf (buf, "0x%02X", ((insn & 0xf00) >> 4) | (insn & 0xf));
+ sprintf (comment, "%d", ((insn & 0xf00) >> 4) | (insn & 0xf));
+ break;
+
+ case 'n':
+ sprintf (buf, _ ("Internal disassembler error"));
+ break;
+
+ case 'K':
+ sprintf (buf, "%d", (insn & 0xf) | ((insn >> 2) & 0x30));
+ break;
+
+ case 's':
+ sprintf (buf, "%d", insn & 7);
+ break;
+
+ case 'S':
+ sprintf (buf, "%d", (insn >> 4) & 7);
+ break;
+
+ case 'P':
+ {
+ unsigned int x;
+ x = (insn & 0xf);
+ x |= (insn >> 5) & 0x30;
+ sprintf (buf, "0x%02x", x);
+ sprintf (comment, "%d", x);
+ }
+ break;
+
+ case 'p':
+ {
+ unsigned int x;
+
+ x = (insn >> 3) & 0x1f;
+ sprintf (buf, "0x%02x", x);
+ sprintf (comment, "%d", x);
+ }
+ break;
+
+ case '?':
+ *buf = '\0';
+ break;
+
+ default:
+ sprintf (buf, _ ("unknown constraint `%c'"), constraint);
+ }
}
+static unsigned short avrdis_opcode PARAMS ((bfd_vma, disassemble_info *));
-static u16 avrdis_opcode PARAMS ((bfd_vma, disassemble_info *));
-
-static u16
+static unsigned short
avrdis_opcode (addr, info)
bfd_vma addr;
disassemble_info *info;
bfd_vma addr;
disassemble_info *info;
{
- char rr[200];
- char rd[200];
- u16 opcode;
+ unsigned int insn, insn2;
+ struct avr_opcodes_s *opcode;
void *stream = info->stream;
fprintf_ftype prin = info->fprintf_func;
+ static int initialized;
int cmd_len = 2;
- opcode = avrdis_opcode (addr, info);
+ if (!initialized)
+ {
+ initialized = 1;
+
+ for (opcode = avr_opcodes; opcode->name; opcode++)
+ {
+ char * s;
+ unsigned int bin = 0;
+ unsigned int mask = 0;
+
+ for (s = opcode->opcode; *s; ++s)
+ {
+ bin <<= 1;
+ mask <<= 1;
+ bin |= (*s == '1');
+ mask |= (*s == '1' || *s == '0');
+ }
+ assert (s - opcode->opcode == 16);
+ assert (opcode->bin_opcode == bin);
+ opcode->bin_mask = mask;
+ }
+ }
- if (IFMASK(0xd000, 0x8000))
+ insn = avrdis_opcode (addr, info);
+
+ for (opcode = avr_opcodes; opcode->name; opcode++)
{
- char letter;
- reg50(opcode, rd);
- dispLDD(opcode, rr);
- if (opcode & 8)
- letter = 'Y';
- else
- letter = 'Z';
- if (opcode & 0x0200)
- (*prin) (stream, " STD %c+%s,%s", letter, rr, rd);
- else
- (*prin) (stream, " LDD %s,%c+%s", rd, letter, rr);
+ if ((insn & opcode->bin_mask) == opcode->bin_opcode)
+ break;
}
- else
+
+ if (opcode->name)
{
- switch (opcode & 0xf000)
- {
- case 0x0000:
- {
- reg50(opcode, rd);
- reg104(opcode, rr);
- switch (opcode & 0x0c00)
- {
- case 0x0000:
- switch (opcode & 0x0300)
- {
- case 0x0000:
- (*prin) (stream, " NOP");
- break;
- case 0x0100:
- reg_movw_d(opcode, rd);
- reg_movw_r(opcode, rr);
- (*prin) (stream, " MOVW %s,%s", rd, rr);
- break;
- case 0x0200:
- reg_muls_d(opcode, rd);
- reg_muls_r(opcode, rr);
- (*prin) (stream, " MULS %s,%s", rd, rr);
- break;
- case 0x0300:
- reg_fmul_d(opcode, rd);
- reg_fmul_r(opcode, rr);
- if (IFMASK(0x88, 0))
- (*prin) (stream, " MULSU %s,%s", rd, rr);
- else if (IFMASK(0x88, 8))
- (*prin) (stream, " FMUL %s,%s", rd, rr);
- else if (IFMASK(0x88, 0x80))
- (*prin) (stream, " FMULS %s,%s", rd, rr);
- else
- (*prin) (stream, " FMULSU %s,%s", rd, rr);
- }
- break;
- case 0x0400:
- (*prin) (stream, " CPC %s,%s", rd, rr);
- break;
- case 0x0800:
- (*prin) (stream, " SBC %s,%s", rd, rr);
- break;
- case 0x0c00:
- (*prin) (stream, " ADD %s,%s", rd, rr);
- break;
- }
- }
- break;
- case 0x1000:
- {
- reg50(opcode, rd);
- reg104(opcode, rr);
- switch (opcode & 0x0c00)
- {
- case 0x0000:
- (*prin) (stream, " CPSE %s,%s", rd, rr);
- break;
- case 0x0400:
- (*prin) (stream, " CP %s,%s", rd, rr);
- break;
- case 0x0800:
- (*prin) (stream, " SUB %s,%s", rd, rr);
- break;
- case 0x0c00:
- (*prin) (stream, " ADC %s,%s", rd, rr);
- break;
- }
- }
- break;
- case 0x2000:
- {
- reg50(opcode, rd);
- reg104(opcode, rr);
- switch (opcode & 0x0c00)
- {
- case 0x0000:
- (*prin) (stream, " AND %s,%s", rd, rr);
- break;
- case 0x0400:
- (*prin) (stream, " EOR %s,%s", rd, rr);
- break;
- case 0x0800:
- (*prin) (stream, " OR %s,%s", rd, rr);
- break;
- case 0x0c00:
- (*prin) (stream, " MOV %s,%s", rd, rr);
- break;
- }
- }
- break;
- case 0x3000:
- {
- reg40(opcode, rd);
- lit404(opcode, rr);
- (*prin) (stream, " CPI %s,%s", rd, rr);
- }
- break;
- case 0x4000:
- {
- reg40(opcode, rd);
- lit404(opcode, rr);
- (*prin) (stream, " SBCI %s,%s", rd, rr);
- }
- break;
- case 0x5000:
- {
- reg40(opcode, rd);
- lit404(opcode, rr);
- (*prin) (stream, " SUBI %s,%s", rd, rr);
- }
- break;
- case 0x6000:
- {
- reg40(opcode, rd);
- lit404(opcode, rr);
- (*prin) (stream, " ORI %s,%s", rd, rr);
- }
- break;
- case 0x7000:
- {
- reg40(opcode, rd);
- lit404(opcode, rr);
- (*prin) (stream, " ANDI %s,%s", rd, rr);
- }
- break;
- case 0x9000:
- {
- switch (opcode & 0x0e00)
- {
- case 0x0000:
- {
- reg50(opcode, rd);
- switch (opcode & 0xf)
- {
- case 0x0:
- {
- (*prin) (stream, " LDS %s,0x%04X", rd,
- avrdis_opcode(addr + 2, info));
- cmd_len = 4;
- }
- break;
- case 0x1:
- (*prin) (stream, " LD %s,Z+", rd);
- break;
- case 0x2:
- (*prin) (stream, " LD %s,-Z", rd);
- break;
- case 0x4:
- (*prin) (stream, " LPM %s,Z", rd);
- break;
- case 0x5:
- (*prin) (stream, " LPM %s,Z+", rd);
- break;
- case 0x6:
- (*prin) (stream, " ELPM %s,Z", rd);
- break;
- case 0x7:
- (*prin) (stream, " ELPM %s,Z+", rd);
- break;
- case 0x9:
- (*prin) (stream, " LD %s,Y+", rd);
- break;
- case 0xa:
- (*prin) (stream, " LD %s,-Y", rd);
- break;
- case 0xc:
- (*prin) (stream, " LD %s,X", rd);
- break;
- case 0xd:
- (*prin) (stream, " LD %s,X+", rd);
- break;
- case 0xe:
- (*prin) (stream, " LD %s,-X", rd);
- break;
- case 0xf:
- (*prin) (stream, " POP %s", rd);
- break;
- default:
- (*prin) (stream, " ????");
- break;
- }
- }
- break;
- case 0x0200:
- {
- reg50(opcode, rd);
- switch (opcode & 0xf)
- {
- case 0x0:
- {
- (*prin) (stream, " STS 0x%04X,%s",
- avrdis_opcode(addr + 2, info), rd);
- cmd_len = 4;
- }
- break;
- case 0x1:
- (*prin) (stream, " ST Z+,%s", rd);
- break;
- case 0x2:
- (*prin) (stream, " ST -Z,%s", rd);
- break;
- case 0x9:
- (*prin) (stream, " ST Y+,%s", rd);
- break;
- case 0xa:
- (*prin) (stream, " ST -Y,%s", rd);
- break;
- case 0xc:
- (*prin) (stream, " ST X,%s", rd);
- break;
- case 0xd:
- (*prin) (stream, " ST X+,%s", rd);
- break;
- case 0xe:
- (*prin) (stream, " ST -X,%s", rd);
- break;
- case 0xf:
- (*prin) (stream, " PUSH %s", rd);
- break;
- default:
- (*prin) (stream, " ????");
- break;
- }
- }
- break;
- case 0x0400:
- {
- if (IFMASK(0x020c, 0x000c))
- {
- u32 k = ((opcode & 0x01f0) >> 3) | (opcode & 1);
- k = (k << 16) | avrdis_opcode(addr + 2, info);
- if (opcode & 0x0002)
- (*prin) (stream, " CALL 0x%06X", k*2);
- else
- (*prin) (stream, " JMP 0x%06X", k*2);
- cmd_len = 4;
- }
- else if (IFMASK(0x010f, 0x0008))
- {
- int sf = (opcode & 0x70) >> 4;
- if (opcode & 0x0080)
- (*prin) (stream, " CL%c", SREG_flags[sf]);
- else
- (*prin) (stream, " SE%c", SREG_flags[sf]);
- }
- else if (IFMASK(0x001f, 0x0009))
- {
- if (opcode & 0x0100)
- (*prin) (stream, " ICALL");
- else
- (*prin) (stream, " IJMP");
- }
- else if (IFMASK(0x001f, 0x0019))
- {
- if (opcode & 0x0100)
- (*prin) (stream, " EICALL");
- else
- (*prin) (stream, " EIJMP");
- }
- else if (IFMASK(0x010f, 0x0108))
- {
- if (IFMASK(0x0090, 0x0000))
- (*prin) (stream, " RET");
- else if (IFMASK(0x0090, 0x0010))
- (*prin) (stream, " RETI");
- else if (IFMASK(0x00e0, 0x0080))
- (*prin) (stream, " SLEEP");
- else if (IFMASK(0x00e0, 0x00a0))
- (*prin) (stream, " WDR");
- else if (IFMASK(0x00f0, 0x00c0))
- (*prin) (stream, " LPM");
- else if (IFMASK(0x00f0, 0x00d0))
- (*prin) (stream, " ELPM");
- else if (IFMASK(0x00f0, 0x00e0))
- (*prin) (stream, " SPM");
- else if (IFMASK(0x00f0, 0x00f0))
- (*prin) (stream, " ESPM");
- else
- (*prin) (stream, " ????");
- }
- else
- {
- const char* p;
- reg50(opcode, rd);
- p = sect94[opcode & 0xf];
- if (!p)
- p = "????";
- (*prin) (stream, " %-8s%s", p, rd);
- }
- }
- break;
- case 0x0600:
- {
- if (opcode & 0x0200)
- {
- lit204(opcode, rd);
- reg20w(opcode, rr);
- if (opcode & 0x0100)
- (*prin) (stream, " SBIW %s,%s", rr, rd);
- else
- (*prin) (stream, " ADIW %s,%s", rr, rd);
- }
- }
- break;
- case 0x0800:
- case 0x0a00:
- {
- (*prin) (stream, " %-8s0x%02X,%d",
- sect98[(opcode & 0x0300) >> 8],
- (opcode & 0xf8) >> 3,
- opcode & 7);
- }
- break;
- default:
- {
- reg50(opcode, rd);
- reg104(opcode, rr);
- (*prin) (stream, " MUL %s,%s", rd, rr);
- }
- }
- }
- break;
- case 0xb000:
- {
- reg50(opcode, rd);
- regPP(opcode, rr);
- if (opcode & 0x0800)
- (*prin) (stream, " OUT %s,%s", rr, rd);
- else
- (*prin) (stream, " IN %s,%s", rd, rr);
- }
- break;
- case 0xc000:
- {
- add0fff(opcode, rd, addr);
- (*prin) (stream, " RJMP %s", rd);
- }
- break;
- case 0xd000:
- {
- add0fff(opcode, rd, addr);
- (*prin) (stream, " RCALL %s", rd);
- }
- break;
- case 0xe000:
- {
- reg40(opcode, rd);
- lit404(opcode, rr);
- (*prin) (stream, " LDI %s,%s", rd, rr);
- }
- break;
- case 0xf000:
- {
- if (opcode & 0x0800)
- {
- reg50(opcode, rd);
- (*prin) (stream, " %-8s%s,%d",
- last4[(opcode & 0x0600) >> 9],
- rd, opcode & 7);
- }
- else
- {
- char* p;
- add03f8(opcode, rd, addr);
- p = branchs[((opcode & 0x0400) >> 7) | (opcode & 7)];
- (*prin) (stream, " %-8s%s", p, rd);
- }
- }
- break;
- }
+ char op1[20], op2[20], comment1[40], comment2[40];
+ char *op = opcode->constraints;
+
+ op1[0] = 0;
+ op2[0] = 0;
+ comment1[0] = 0;
+ comment2[0] = 0;
+
+ if (opcode->insn_size > 1)
+ {
+ insn2 = avrdis_opcode (addr + 2, info);
+ cmd_len = 4;
+ }
+
+ if (*op && *op != '?')
+ {
+ int regs = REGISTER_P (*op);
+
+ avr_operand (insn, insn2, addr, *op, op1, comment1, 0);
+
+ if (*(++op) == ',')
+ avr_operand (insn, insn2, addr, *(++op), op2,
+ *comment1 ? comment2 : comment1, regs);
+ }
+
+ (*prin) (stream, " %-8s", opcode->name);
+
+ if (*op1)
+ (*prin) (stream, "%s", op1);
+
+ if (*op2)
+ (*prin) (stream, ", %s", op2);
+
+ if (*comment1)
+ (*prin) (stream, "\t; %s", comment1);
+
+ if (*comment2)
+ (*prin) (stream, " %s", comment2);
}
+ else
+ (*prin) (stream, ".word 0x%04x\t; ????", insn);
+
return cmd_len;
}
projects / binutils-gdb.git / commitdiff