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Diffstat (limited to 'disas/moxie.c')
| -rw-r--r-- | disas/moxie.c | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/disas/moxie.c b/disas/moxie.c deleted file mode 100644 index e94ab4c..0000000 --- a/disas/moxie.c +++ /dev/null @@ -1,360 +0,0 @@ -/* Disassemble moxie instructions. - Copyright (c) 2009 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, see <http://www.gnu.org/licenses/>. */ - -#include "qemu/osdep.h" -#define STATIC_TABLE -#define DEFINE_TABLE - -#include "disas/dis-asm.h" - -static void *stream; - -/* Form 1 instructions come in different flavors: - - Some have no arguments (MOXIE_F1_NARG) - Some only use the A operand (MOXIE_F1_A) - Some use A and B registers (MOXIE_F1_AB) - Some use A and consume a 4 byte immediate value (MOXIE_F1_A4) - Some use just a 4 byte immediate value (MOXIE_F1_4) - Some use just a 4 byte memory address (MOXIE_F1_M) - Some use B and an indirect A (MOXIE_F1_AiB) - Some use A and an indirect B (MOXIE_F1_ABi) - Some consume a 4 byte immediate value and use X (MOXIE_F1_4A) - Some use B and an indirect A plus 4 bytes (MOXIE_F1_AiB4) - Some use A and an indirect B plus 4 bytes (MOXIE_F1_ABi4) - - Form 2 instructions also come in different flavors: - - Some have no arguments (MOXIE_F2_NARG) - Some use the A register and an 8-bit value (MOXIE_F2_A8V) - - Form 3 instructions also come in different flavors: - - Some have no arguments (MOXIE_F3_NARG) - Some have a 10-bit PC relative operand (MOXIE_F3_PCREL). */ - -#define MOXIE_F1_NARG 0x100 -#define MOXIE_F1_A 0x101 -#define MOXIE_F1_AB 0x102 -/* #define MOXIE_F1_ABC 0x103 */ -#define MOXIE_F1_A4 0x104 -#define MOXIE_F1_4 0x105 -#define MOXIE_F1_AiB 0x106 -#define MOXIE_F1_ABi 0x107 -#define MOXIE_F1_4A 0x108 -#define MOXIE_F1_AiB4 0x109 -#define MOXIE_F1_ABi4 0x10a -#define MOXIE_F1_M 0x10b - -#define MOXIE_F2_NARG 0x200 -#define MOXIE_F2_A8V 0x201 - -#define MOXIE_F3_NARG 0x300 -#define MOXIE_F3_PCREL 0x301 - -typedef struct moxie_opc_info_t { - short opcode; - unsigned itype; - const char * name; -} moxie_opc_info_t; - -extern const moxie_opc_info_t moxie_form1_opc_info[64]; -extern const moxie_opc_info_t moxie_form2_opc_info[4]; -extern const moxie_opc_info_t moxie_form3_opc_info[16]; - -/* The moxie processor's 16-bit instructions come in two forms: - - FORM 1 instructions start with a 0 bit... - - 0oooooooaaaabbbb - 0 F - - ooooooo - form 1 opcode number - aaaa - operand A - bbbb - operand B - - FORM 2 instructions start with bits "10"... - - 10ooaaaavvvvvvvv - 0 F - - oo - form 2 opcode number - aaaa - operand A - vvvvvvvv - 8-bit immediate value - - FORM 3 instructions start with a bits "11"... - - 11oooovvvvvvvvvv - 0 F - - oooo - form 3 opcode number - vvvvvvvvvv - 10-bit immediate value. */ - -const moxie_opc_info_t moxie_form1_opc_info[64] = - { - { 0x00, MOXIE_F1_NARG, "nop" }, - { 0x01, MOXIE_F1_A4, "ldi.l" }, - { 0x02, MOXIE_F1_AB, "mov" }, - { 0x03, MOXIE_F1_M, "jsra" }, - { 0x04, MOXIE_F1_NARG, "ret" }, - { 0x05, MOXIE_F1_AB, "add.l" }, - { 0x06, MOXIE_F1_AB, "push" }, - { 0x07, MOXIE_F1_AB, "pop" }, - { 0x08, MOXIE_F1_A4, "lda.l" }, - { 0x09, MOXIE_F1_4A, "sta.l" }, - { 0x0a, MOXIE_F1_ABi, "ld.l" }, - { 0x0b, MOXIE_F1_AiB, "st.l" }, - { 0x0c, MOXIE_F1_ABi4, "ldo.l" }, - { 0x0d, MOXIE_F1_AiB4, "sto.l" }, - { 0x0e, MOXIE_F1_AB, "cmp" }, - { 0x0f, MOXIE_F1_NARG, "bad" }, - { 0x10, MOXIE_F1_NARG, "bad" }, - { 0x11, MOXIE_F1_NARG, "bad" }, - { 0x12, MOXIE_F1_NARG, "bad" }, - { 0x13, MOXIE_F1_NARG, "bad" }, - { 0x14, MOXIE_F1_NARG, "bad" }, - { 0x15, MOXIE_F1_NARG, "bad" }, - { 0x16, MOXIE_F1_NARG, "bad" }, - { 0x17, MOXIE_F1_NARG, "bad" }, - { 0x18, MOXIE_F1_NARG, "bad" }, - { 0x19, MOXIE_F1_A, "jsr" }, - { 0x1a, MOXIE_F1_M, "jmpa" }, - { 0x1b, MOXIE_F1_A4, "ldi.b" }, - { 0x1c, MOXIE_F1_ABi, "ld.b" }, - { 0x1d, MOXIE_F1_A4, "lda.b" }, - { 0x1e, MOXIE_F1_AiB, "st.b" }, - { 0x1f, MOXIE_F1_4A, "sta.b" }, - { 0x20, MOXIE_F1_A4, "ldi.s" }, - { 0x21, MOXIE_F1_ABi, "ld.s" }, - { 0x22, MOXIE_F1_A4, "lda.s" }, - { 0x23, MOXIE_F1_AiB, "st.s" }, - { 0x24, MOXIE_F1_4A, "sta.s" }, - { 0x25, MOXIE_F1_A, "jmp" }, - { 0x26, MOXIE_F1_AB, "and" }, - { 0x27, MOXIE_F1_AB, "lshr" }, - { 0x28, MOXIE_F1_AB, "ashl" }, - { 0x29, MOXIE_F1_AB, "sub.l" }, - { 0x2a, MOXIE_F1_AB, "neg" }, - { 0x2b, MOXIE_F1_AB, "or" }, - { 0x2c, MOXIE_F1_AB, "not" }, - { 0x2d, MOXIE_F1_AB, "ashr" }, - { 0x2e, MOXIE_F1_AB, "xor" }, - { 0x2f, MOXIE_F1_AB, "mul.l" }, - { 0x30, MOXIE_F1_4, "swi" }, - { 0x31, MOXIE_F1_AB, "div.l" }, - { 0x32, MOXIE_F1_AB, "udiv.l" }, - { 0x33, MOXIE_F1_AB, "mod.l" }, - { 0x34, MOXIE_F1_AB, "umod.l" }, - { 0x35, MOXIE_F1_NARG, "brk" }, - { 0x36, MOXIE_F1_ABi4, "ldo.b" }, - { 0x37, MOXIE_F1_AiB4, "sto.b" }, - { 0x38, MOXIE_F1_ABi4, "ldo.s" }, - { 0x39, MOXIE_F1_AiB4, "sto.s" }, - { 0x3a, MOXIE_F1_NARG, "bad" }, - { 0x3b, MOXIE_F1_NARG, "bad" }, - { 0x3c, MOXIE_F1_NARG, "bad" }, - { 0x3d, MOXIE_F1_NARG, "bad" }, - { 0x3e, MOXIE_F1_NARG, "bad" }, - { 0x3f, MOXIE_F1_NARG, "bad" } - }; - -const moxie_opc_info_t moxie_form2_opc_info[4] = - { - { 0x00, MOXIE_F2_A8V, "inc" }, - { 0x01, MOXIE_F2_A8V, "dec" }, - { 0x02, MOXIE_F2_A8V, "gsr" }, - { 0x03, MOXIE_F2_A8V, "ssr" } - }; - -const moxie_opc_info_t moxie_form3_opc_info[16] = - { - { 0x00, MOXIE_F3_PCREL,"beq" }, - { 0x01, MOXIE_F3_PCREL,"bne" }, - { 0x02, MOXIE_F3_PCREL,"blt" }, - { 0x03, MOXIE_F3_PCREL,"bgt" }, - { 0x04, MOXIE_F3_PCREL,"bltu" }, - { 0x05, MOXIE_F3_PCREL,"bgtu" }, - { 0x06, MOXIE_F3_PCREL,"bge" }, - { 0x07, MOXIE_F3_PCREL,"ble" }, - { 0x08, MOXIE_F3_PCREL,"bgeu" }, - { 0x09, MOXIE_F3_PCREL,"bleu" }, - { 0x0a, MOXIE_F3_NARG, "bad" }, - { 0x0b, MOXIE_F3_NARG, "bad" }, - { 0x0c, MOXIE_F3_NARG, "bad" }, - { 0x0d, MOXIE_F3_NARG, "bad" }, - { 0x0e, MOXIE_F3_NARG, "bad" }, - { 0x0f, MOXIE_F3_NARG, "bad" } - }; - -/* Macros to extract operands from the instruction word. */ -#define OP_A(i) ((i >> 4) & 0xf) -#define OP_B(i) (i & 0xf) -#define INST2OFFSET(o) ((((signed short)((o & ((1<<10)-1))<<6))>>6)<<1) - -static const char * reg_names[16] = - { "$fp", "$sp", "$r0", "$r1", "$r2", "$r3", "$r4", "$r5", - "$r6", "$r7", "$r8", "$r9", "$r10", "$r11", "$r12", "$r13" }; - -int -print_insn_moxie(bfd_vma addr, struct disassemble_info * info) -{ - int length = 2; - int status; - stream = info->stream; - const moxie_opc_info_t * opcode; - bfd_byte buffer[4]; - unsigned short iword; - fprintf_function fpr = info->fprintf_func; - - if ((status = info->read_memory_func(addr, buffer, 2, info))) - goto fail; - iword = (bfd_getb16(buffer) >> 16); - - /* Form 1 instructions have the high bit set to 0. */ - if ((iword & (1<<15)) == 0) { - /* Extract the Form 1 opcode. */ - opcode = &moxie_form1_opc_info[iword >> 8]; - switch (opcode->itype) { - case MOXIE_F1_NARG: - fpr(stream, "%s", opcode->name); - break; - case MOXIE_F1_A: - fpr(stream, "%s\t%s", opcode->name, - reg_names[OP_A(iword)]); - break; - case MOXIE_F1_AB: - fpr(stream, "%s\t%s, %s", opcode->name, - reg_names[OP_A(iword)], - reg_names[OP_B(iword)]); - break; - case MOXIE_F1_A4: - { - unsigned imm; - if ((status = info->read_memory_func(addr + 2, buffer, 4, info))) - goto fail; - imm = bfd_getb32(buffer); - fpr(stream, "%s\t%s, 0x%x", opcode->name, - reg_names[OP_A(iword)], imm); - length = 6; - } - break; - case MOXIE_F1_4: - { - unsigned imm; - if ((status = info->read_memory_func(addr + 2, buffer, 4, info))) - goto fail; - imm = bfd_getb32(buffer); - fpr(stream, "%s\t0x%x", opcode->name, imm); - length = 6; - } - break; - case MOXIE_F1_M: - { - unsigned imm; - if ((status = info->read_memory_func(addr + 2, buffer, 4, info))) - goto fail; - imm = bfd_getb32(buffer); - fpr(stream, "%s\t", opcode->name); - info->print_address_func((bfd_vma) imm, info); - length = 6; - } - break; - case MOXIE_F1_AiB: - fpr (stream, "%s\t(%s), %s", opcode->name, - reg_names[OP_A(iword)], reg_names[OP_B(iword)]); - break; - case MOXIE_F1_ABi: - fpr(stream, "%s\t%s, (%s)", opcode->name, - reg_names[OP_A(iword)], reg_names[OP_B(iword)]); - break; - case MOXIE_F1_4A: - { - unsigned imm; - if ((status = info->read_memory_func(addr + 2, buffer, 4, info))) - goto fail; - imm = bfd_getb32(buffer); - fpr(stream, "%s\t0x%x, %s", - opcode->name, imm, reg_names[OP_A(iword)]); - length = 6; - } - break; - case MOXIE_F1_AiB4: - { - unsigned imm; - if ((status = info->read_memory_func(addr+2, buffer, 4, info))) - goto fail; - imm = bfd_getb32(buffer); - fpr(stream, "%s\t0x%x(%s), %s", opcode->name, - imm, - reg_names[OP_A(iword)], - reg_names[OP_B(iword)]); - length = 6; - } - break; - case MOXIE_F1_ABi4: - { - unsigned imm; - if ((status = info->read_memory_func(addr+2, buffer, 4, info))) - goto fail; - imm = bfd_getb32(buffer); - fpr(stream, "%s\t%s, 0x%x(%s)", - opcode->name, - reg_names[OP_A(iword)], - imm, - reg_names[OP_B(iword)]); - length = 6; - } - break; - default: - abort(); - } - } - else if ((iword & (1<<14)) == 0) { - /* Extract the Form 2 opcode. */ - opcode = &moxie_form2_opc_info[(iword >> 12) & 3]; - switch (opcode->itype) { - case MOXIE_F2_A8V: - fpr(stream, "%s\t%s, 0x%x", - opcode->name, - reg_names[(iword >> 8) & 0xf], - iword & ((1 << 8) - 1)); - break; - case MOXIE_F2_NARG: - fpr(stream, "%s", opcode->name); - break; - default: - abort(); - } - } else { - /* Extract the Form 3 opcode. */ - opcode = &moxie_form3_opc_info[(iword >> 10) & 15]; - switch (opcode->itype) { - case MOXIE_F3_PCREL: - fpr(stream, "%s\t", opcode->name); - info->print_address_func((bfd_vma) (addr + INST2OFFSET(iword) + 2), - info); - break; - default: - abort(); - } - } - - return length; - - fail: - info->memory_error_func(status, addr, info); - return -1; -} |