| /* Definitions for decoding the ft32 opcode table. |
| Copyright (C) 2013-2021 Free Software Foundation, Inc. |
| Contributed by FTDI (support@ftdichip.com) |
| |
| 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., 51 Franklin Street - Fifth Floor, Boston, MA |
| 02110-1301, USA. */ |
| |
| typedef struct ft32_opc_info_t |
| { |
| const char *name; |
| int dw; |
| unsigned int mask; |
| unsigned int bits; |
| int fields; |
| } ft32_opc_info_t; |
| |
| #define FT32_PAT_ALUOP 0x08 |
| #define FT32_PAT_LDA 0x18 |
| #define FT32_PAT_TOCI 0x01 |
| #define FT32_PAT_CMPOP 0x0b |
| #define FT32_PAT_STA 0x17 |
| #define FT32_PAT_EXA 0x07 |
| #define FT32_PAT_LDK 0x0c |
| #define FT32_PAT_FFUOP 0x1e |
| #define FT32_PAT_LDI 0x15 |
| #define FT32_PAT_STI 0x16 |
| #define FT32_PAT_EXI 0x1d |
| #define FT32_PAT_POP 0x11 |
| #define FT32_PAT_LPM 0x0d |
| #define FT32_PAT_LINK 0x12 |
| #define FT32_PAT_TOC 0x00 |
| #define FT32_PAT_PUSH 0x10 |
| #define FT32_PAT_RETURN 0x14 |
| #define FT32_PAT_UNLINK 0x13 |
| #define FT32_PAT_LPMI 0x19 |
| |
| #define FT32_FLD_CBCRCV (1 << 0) |
| #define FT32_FLD_INT (1 << 1) |
| #define FT32_FLD_INT_BIT 26 |
| #define FT32_FLD_INT_SIZ 1 |
| #define FT32_FLD_DW (1 << 2) |
| #define FT32_FLD_DW_BIT 25 |
| #define FT32_FLD_DW_SIZ 2 |
| #define FT32_FLD_CB (1 << 3) |
| #define FT32_FLD_CB_BIT 22 |
| #define FT32_FLD_CB_SIZ 5 |
| #define FT32_FLD_R_D (1 << 4) |
| #define FT32_FLD_R_D_BIT 20 |
| #define FT32_FLD_R_D_SIZ 5 |
| #define FT32_FLD_CR (1 << 5) |
| #define FT32_FLD_CR_BIT 20 |
| #define FT32_FLD_CR_SIZ 2 |
| #define FT32_FLD_CV (1 << 6) |
| #define FT32_FLD_CV_BIT 19 |
| #define FT32_FLD_CV_SIZ 1 |
| #define FT32_FLD_BT (1 << 7) |
| #define FT32_FLD_BT_BIT 18 |
| #define FT32_FLD_BT_SIZ 1 |
| #define FT32_FLD_R_1 (1 << 8) |
| #define FT32_FLD_R_1_BIT 15 |
| #define FT32_FLD_R_1_SIZ 5 |
| #define FT32_FLD_RIMM (1 << 9) |
| #define FT32_FLD_RIMM_BIT 4 |
| #define FT32_FLD_RIMM_SIZ 11 |
| #define FT32_FLD_R_2 (1 << 10) |
| #define FT32_FLD_R_2_BIT 4 |
| #define FT32_FLD_R_2_SIZ 5 |
| #define FT32_FLD_K20 (1 << 11) |
| #define FT32_FLD_K20_BIT 0 |
| #define FT32_FLD_K20_SIZ 20 |
| #define FT32_FLD_PA (1 << 12) |
| #define FT32_FLD_PA_BIT 0 |
| #define FT32_FLD_PA_SIZ 18 |
| #define FT32_FLD_AA (1 << 13) |
| #define FT32_FLD_AA_BIT 0 |
| #define FT32_FLD_AA_SIZ 17 |
| #define FT32_FLD_K16 (1 << 14) |
| #define FT32_FLD_K16_BIT 0 |
| #define FT32_FLD_K16_SIZ 16 |
| #define FT32_FLD_K15 (1 << 15) |
| #define FT32_FLD_K15_BIT 0 |
| #define FT32_FLD_K15_SIZ 15 |
| #define FT32_FLD_AL (1 << 16) |
| #define FT32_FLD_AL_BIT 0 |
| #define FT32_FLD_AL_SIZ 4 |
| |
| #define FT32_IS_CALL(inst) (((inst) & 0xfffc0000) == 0x00340000) |
| #define FT32_IS_PUSH(inst) (((inst) & 0xfff00000) == 0x84000000) |
| #define FT32_PUSH_REG(inst) (((inst) >> 15) & 0x1f) |
| #define FT32_IS_LINK(inst) (((inst) & 0xffff0000) == 0x95d00000) |
| #define FT32_LINK_SIZE(inst) ((inst) & 0xffff) |
| |
| #define FT32_FLD_R_D_POST (1 << 17) |
| #define FT32_FLD_R_1_POST (1 << 18) |
| |
| static const unsigned int sc_form_0[] = { |
| 0x44000000, 0x44000002, 0x44000004, 0x44000005, 0x4400000b, |
| 0x44000010, 0x44000012, 0x44000014, 0x44000015, 0x44000018, |
| 0x4400001b, 0x44000020, 0x44000022, 0x44000024, 0x44000025, |
| 0x4400002b, 0x44000030, 0x44000032, 0x44000034, 0x44000035, |
| 0x4400003b, 0x44000040, 0x44000042, 0x44000044, 0x44000045, |
| 0x4400004b, 0x44000050, 0x44000060, 0x44000062, 0x44000065, |
| 0x44000070, 0x44000072, 0x44000075, 0x44000080, 0x44000082, |
| 0x44000090, 0x44000092, 0x440000a0, 0x440000a2, 0x440000b0, |
| 0x440000d0, 0x440000d2, 0x440000d5, 0x440000e0, 0x440000e2, |
| 0x440000f0, 0x440000f2, 0x440000f5, 0x44000100, 0x44000102, |
| 0x44000110, 0x44000120, 0x44000122, 0x44000130, 0x44000140, |
| 0x44000170, 0x44000180, 0x44000190, 0x440001a0, 0x440001b0, |
| 0x440001e0, 0x440001f0, 0x44004000, 0x44004003, 0x4400400c, |
| 0x4400400d, 0x44004010, 0x44004011, 0x44004013, 0x44004014, |
| 0x44004016, 0x44004019, 0x4400401a, 0x44004020, 0x44004021, |
| 0x44004028, 0x4400402a, 0x44004034, 0x44004038, 0x44004039, |
| 0x44004040, 0x44004048, 0x44004058, 0x44004064, 0x44004074, |
| 0x44004080, 0x44004081, 0x44004088, 0x44004089, 0x44004098, |
| 0x440040c0, 0x440040ca, 0x440040f4, 0x44004100, 0x44004108, |
| 0x44004109, 0x4400410a, 0x4400410b, 0x44004180, 0x44004182, |
| 0x440041c0, 0x440041c2, 0x440041f4, 0x44004200, 0x44004202, |
| 0x4400420b, 0x4400421b, 0x4400422b, 0x44004240, 0x44004242, |
| 0x4400424b, 0x4400425b, 0x4400426b, 0x4400427b, 0x44004280, |
| 0x44004282, 0x440042ab, 0x440042bb, 0x440042c0, 0x440042c2, |
| 0x44004300, 0x44004340, 0x440043c3, 0x4400440b, 0x44004543, |
| 0x44004553, 0x440047f4, 0x44004800, 0x44004980, 0x44004a0b, |
| 0x44004a80, 0x44004dc0, 0x44004ff4, 0x44005003, 0x44005353, |
| 0x4400537b, 0x440053e3, 0x44005700, 0x4400594b, 0x4400620b, |
| 0x4400621b, 0x4400622b, 0x4400623b, 0x4400624b, 0x4400625b, |
| 0x4400626b, 0x4400627b, 0x4400628b, 0x4400629b, 0x440062bb, |
| 0x440062fb, 0x4400633b, 0x4400637b, 0x44006383, 0x44007f00, |
| 0x44007f80, 0x44007fc0, 0x44007fe0, 0x44007ff0, 0x44007ff3, 0x44007ff6 |
| }; |
| static const unsigned int sc_form_1[] = { |
| 0x44000002, 0x44008002, 0x44010002, 0x44010008, 0x44018002, |
| 0x44020002, 0x44030002, 0x44038002 |
| }; |
| static const unsigned int sc_form_2[] = { |
| 0x59e04002, 0x59e04012, 0x59e04022, 0x59e04032, 0x59e04042, |
| 0x59e04052, 0x59e04072, 0x59e04082, 0x59e07ff2, 0x5de00002, |
| 0x5de00012, 0x5de00022, 0x5de00032, 0x5de00042, 0x5de00052, |
| 0x5de00062, 0x5de00072, 0x5de00082, 0x5de000a2, 0x5de000d2, |
| 0x5de000e2, 0x5de000f2, 0x5de00102, 0x5de00112, 0x5de00122, |
| 0x5de00132, 0x5de00172, 0x5de04002, 0x5de04012, 0x5de04022, |
| 0x5de04032, 0x5de04042, 0x5de04052, 0x5de04062, 0x5de04072, |
| 0x5de04082, 0x5de04092, 0x5de040f2, 0x5de04102, 0x5de04112, |
| 0x5de04142, 0x5de04162, 0x5de041b2, 0x5de041f2, 0x5de04202, |
| 0x5de0420c, 0x5de0421c, 0x5de0422c, 0x5de0423c, 0x5de04242, |
| 0x5de0424c, 0x5de0425c, 0x5de0426c, 0x5de0427c, 0x5de0428c, |
| 0x5de0429c, 0x5de042ac, 0x5de042cc, 0x5de042dc, 0x5de042ec, |
| 0x5de042fc, 0x5de0430c, 0x5de0431c, 0x5de0433c, 0x5de0436c, |
| 0x5de0437c, 0x5de04382, 0x5de043ac, 0x5de043bc, 0x5de043cc, |
| 0x5de043dc, 0x5de04ff2, 0x5de07ff2, 0x84000000 |
| }; |
| static const unsigned int sc_form_3[] = { |
| 0x44000010, 0x44000024, 0x44000025, 0x44000030, 0x44000034, |
| 0x44004000, 0x4400400c, 0x4400400d, 0x44004010, 0x44004014, |
| 0x44004028, 0x44004038, 0x44004040, 0x440040ca, 0x44004109, |
| 0x44004880, 0x44004ac0, 0x44004e00, 0x44004e80, 0x44004ff4, |
| 0x4400500c, 0x44005200, 0x44005680, 0x44005700, 0x4400620b, |
| 0x44007f80, 0x44008020, 0x44008024, 0x4400c000, 0x4400c00c, |
| 0x4400c00d, 0x4400c010, 0x4400c028, 0x4400c038, 0x4400c1f9, |
| 0x4400cff4, 0x4400d00c, 0x4400d173, 0x4400ff80, 0x4400fff0, |
| 0x44010030, 0x44014000, 0x4401400c, 0x4401400d, 0x44014010, |
| 0x44014028, 0x44014074, 0x44014080, 0x440143f3, 0x44014ff4, |
| 0x4401500c, 0x44015743, 0x44017ff0, 0x44018030, 0x4401c000, |
| 0x4401c00c, 0x4401c010, 0x4401cff4, 0x4401d00c, 0x44020100, |
| 0x44024000, 0x44024014, 0x44027f80, 0x4402c000, 0x44030085, |
| 0x44034000, 0x44034109, 0x4403c000, 0x44044000, 0x44044109, |
| 0x4404410b, 0x4404c000, 0x440680e0, 0x4406c000, 0x4406c040, |
| 0x4406c080, 0x4406c0c0, 0x4406c300, 0x4406c3c0, 0x4406c900, |
| 0x4406cac0, 0x4406cb40, 0x4406cbc0, 0x4406ce80, 0x4406d5c0, |
| 0x4406d680, 0x4406d700, 0x4406d740, 0x4406d780, 0x4406dfc0, |
| 0x44074000, 0x44074010, 0x44074e80, 0x4407c000, 0x4407c00d, |
| 0x4407c074, 0x44084000, 0x4408c000, 0x44094000, 0x4409c000, |
| 0x440a4000, 0x440ac000, 0x440b4000, 0x440bc000, 0x440c4000, |
| 0x440c4040, 0x440cc000, 0x440d4000, 0x440dc000, 0x440ef340, |
| 0x440ef400, 0x440ef440, 0x440ef4c0, 0x440ef540, 0x440ef5c0, |
| 0x440ef6b0, 0x440ef700, 0x440ef780, 0x440ef8c0, 0x440f420d, |
| 0x440f421d, 0x440f426d, 0x440fc180, 0x440fc1a0, 0x440fc1b0, |
| 0x440fc1c0, 0x440fc200, 0x440fc240, 0x440fc280, 0x440fc380, |
| 0x440fc840, 0x440fc8c0, 0x440fc900, 0x440fc980, 0x440fcd80, |
| 0x64000000, 0x64000001, 0x64000002, 0x64000003, 0x64000004, |
| 0x64000005, 0x64000006, 0x64000007, 0x64000008, 0x64000009, |
| 0x6400000a, 0x6400000b, 0x6400000c, 0x6400000d, 0x6400000e, |
| 0x6400000f, 0x64000010, 0x64000011, 0x64000012, 0x64000013, |
| 0x64000014, 0x64000015, 0x64000017, 0x64000018, 0x64000019, |
| 0x6400001a, 0x6400001d, 0x64000020, 0x64000023, 0x64000024, |
| 0x64000027, 0x6400002b, 0x6400002c, 0x6400002d, 0x64000030, |
| 0x64000035, 0x6400003c, 0x64000040, 0x64000048, 0x64000064, |
| 0x6400006c, 0x64000080, 0x640000ff, 0x64000100, 0x640001b0, |
| 0x640001b8, 0x64000200, 0x64000218, 0x64000240, 0x6400024c, |
| 0x64000250, 0x640003e8, 0x64000400, 0x64000409, 0x64000554, |
| 0x64000600, 0x64000690, 0x64000730, 0x640007ff, 0x64000800, |
| 0x64000900, 0x64000fff, 0x64001000, 0x6400182c, 0x64001b70, |
| 0x64001c1c, 0x64001c24, 0x64001fff, 0x64002000, 0x64003598, |
| 0x640036ec, 0x64003fff, 0x640052c0, 0x640054e4, 0x64005a3c, |
| 0x64005fa4, 0x64006468, 0x64006718, 0x64008000, 0x6400c000, |
| 0x6400ffff, 0x64010000, 0x64010008, 0x640102a0, 0x64014515, |
| 0x64040000, 0x64050000, 0x6407c000, 0x640ff800, 0x640ffc00, |
| 0x640ffc01, 0x640ffc02, 0x640fffff, 0x8c000000, 0x94000000, |
| 0x94000018, 0x9400001c, 0x94000020, 0x98000000, 0xa0000000, |
| 0xa8000000, 0xa8000001, 0xa8000002, 0xa8000003, 0xa8008000, |
| 0xa8008002, 0xa8010000, 0xa8018000, 0xa8020000, 0xa8068000, |
| 0xa8068005, 0xa8068006, 0xa8068007, 0xa806800f, 0xa8068040, |
| 0xa8068043, 0xa8068054, 0xa8070000, 0xa8078000, 0xa8080000, |
| 0xa8090000, 0xa80b0000, 0xa80f801b, 0xaa000000, 0xaa008000, |
| 0xaa008002, 0xaa00800c, 0xaa010000, 0xaa068000, 0xaa068002, |
| 0xaa068004, 0xaa068006, 0xaa068008, 0xaa06800a, 0xaa06800c, |
| 0xaa068024, 0xaa070000, 0xaa070002, 0xaa07000c, 0xaa078000, |
| 0xaa078002, 0xac000000, 0xac000004, 0xac000008, 0xac00000c, |
| 0xac000010, 0xac000014, 0xac000018, 0xac00001c, 0xac000020, |
| 0xac000024, 0xac000028, 0xac00002c, 0xac000030, 0xac000038, |
| 0xac00003c, 0xac000040, 0xac000044, 0xac000058, 0xac00006c, |
| 0xac008000, 0xac008004, 0xac008008, 0xac00800c, 0xac008010, |
| 0xac008018, 0xac008020, 0xac008024, 0xac008028, 0xac008030, |
| 0xac008034, 0xac008038, 0xac00803c, 0xac008044, 0xac008070, |
| 0xac008078, 0xac010000, 0xac010004, 0xac010008, 0xac01000c, |
| 0xac010010, 0xac01002c, 0xac018000, 0xac018004, 0xac018008, |
| 0xac020000, 0xac020004, 0xac020008, 0xac028000, 0xac030000, |
| 0xac038000, 0xac048000, 0xac050000, 0xac068000, 0xac068004, |
| 0xac068008, 0xac06800c, 0xac068010, 0xac068014, 0xac068018, |
| 0xac06801c, 0xac068020, 0xac068024, 0xac068028, 0xac06802c, |
| 0xac068030, 0xac068034, 0xac068038, 0xac06803c, 0xac068040, |
| 0xac068044, 0xac068048, 0xac06804c, 0xac068050, 0xac068058, |
| 0xac070000, 0xac070004, 0xac070008, 0xac07000c, 0xac070010, |
| 0xac070014, 0xac070018, 0xac07001c, 0xac070024, 0xac070028, |
| 0xac07002c, 0xac070038, 0xac07003c, 0xac070040, 0xac070044, |
| 0xac070048, 0xac07004c, 0xac070054, 0xac078000, 0xac078004, |
| 0xac078008, 0xac07800c, 0xac078024, 0xac07803c, 0xac080000, |
| 0xac080004, 0xac080008, 0xac08003c, 0xac088000, 0xac088004, |
| 0xac088008, 0xac08800c, 0xac090000, 0xac098000, 0xac0a0000, |
| 0xac0a0004, 0xac0a8000, 0xac0b0000, 0xac0c0000, 0xac0d8004, |
| 0xac0d8008, 0xac0e8090, 0xac0e8094, 0xac0e80fc, 0xac0f8018, |
| 0xac0f801c, 0xac0f8020, 0xac0f8024, 0xac0f8028, 0xac0f802c, |
| 0xac0f8030, 0xac0f8034, 0xac0f8038, 0xac0f803c, 0xac0f8040, |
| 0xac0f8044, 0xac0f8048, 0xac0f804c, 0xac0f8050, 0xac0f8054, |
| 0xac0f8058, 0xb0000000, 0xb0000006, 0xb0000009, 0xb0000018, |
| 0xb0000019, 0xb000001b, 0xb0008000, 0xb0010000, 0xb0018000, |
| 0xb0018087, 0xb0020000, 0xb0030000, 0xb0070000, 0xb0078000, |
| 0xb0080000, 0xb2000000, 0xb2000006, 0xb200000c, 0xb2008000, |
| 0xb200800c, 0xb2010000, 0xb2018000, 0xb2020000, 0xb2078000, |
| 0xb4000000, 0xb4000004, 0xb4000008, 0xb400000c, 0xb4000010, |
| 0xb4000014, 0xb4000018, 0xb400001c, 0xb4000020, 0xb4000024, |
| 0xb4000028, 0xb400002c, 0xb4000030, 0xb4000034, 0xb4000038, |
| 0xb400003c, 0xb4000040, 0xb4000044, 0xb4000048, 0xb4000050, |
| 0xb4000054, 0xb400006c, 0xb4008000, 0xb4008004, 0xb4008008, |
| 0xb400800c, 0xb4008010, 0xb4008014, 0xb4008018, 0xb400801c, |
| 0xb4008020, 0xb4008024, 0xb4008028, 0xb400802c, 0xb4008034, |
| 0xb4008038, 0xb4008040, 0xb4008044, 0xb400806c, 0xb4008070, |
| 0xb4010000, 0xb4010004, 0xb4010008, 0xb401000c, 0xb4010010, |
| 0xb4010018, 0xb401001c, 0xb4010020, 0xb4010024, 0xb4010028, |
| 0xb401002c, 0xb4018000, 0xb4018004, 0xb4018008, 0xb4018018, |
| 0xb401801c, 0xb4020000, 0xb4020004, 0xb4020008, 0xb402000c, |
| 0xb4020018, 0xb4028000, 0xb4028018, 0xb4030000, 0xb4030008, |
| 0xb4030018, 0xb4038000, 0xb4068000, 0xb4068004, 0xb4068008, |
| 0xb406800c, 0xb4068018, 0xb406801c, 0xb4068020, 0xb4068024, |
| 0xb4068028, 0xb4070000, 0xb4070004, 0xb4070008, 0xb4070010, |
| 0xb4070018, 0xb4070024, 0xb4070028, 0xb4078000, 0xb4078024, |
| 0xb4080000, 0xb4080004, 0xb4090000, 0xb4098000, 0xb40c8000 |
| }; |
| |
| #define N_SC_FORM0 (sizeof (sc_form_0) / sizeof (unsigned int)) |
| #define N_SC_FORM1 (sizeof (sc_form_1) / sizeof (unsigned int)) |
| #define N_SC_FORM2 (sizeof (sc_form_2) / sizeof (unsigned int)) |
| #define N_SC_FORM3 (sizeof (sc_form_3) / sizeof (unsigned int)) |
| |
| static int |
| sc_compar (const void *va, const void *vb) |
| { |
| const unsigned int *a = (unsigned int *) va; |
| const unsigned int *b = (unsigned int *) vb; |
| return (*a - *b); |
| } |
| |
| static int ATTRIBUTE_UNUSED |
| ft32_shortcode (unsigned int op32, unsigned int *sc) |
| { |
| unsigned int Rd_mask = 31 << 20; |
| unsigned int R1_mask = 31 << 15; |
| unsigned int R2_mask = 2047 << 4; |
| unsigned int Rd = (op32 >> 20) & 31; |
| unsigned int R1 = (op32 >> 15) & 31; |
| unsigned int R2 = (op32 >> 4) & 2047; |
| unsigned int lookup; |
| unsigned int *find = NULL; |
| unsigned int code = 0, r = 0; |
| |
| /* Form 0 */ |
| if (Rd == R1) |
| { |
| lookup = op32 & ~Rd_mask & ~R1_mask; |
| find = (unsigned int *) bsearch (&lookup, sc_form_0, N_SC_FORM0, |
| sizeof (unsigned int), sc_compar); |
| code = find - sc_form_0; |
| r = Rd; |
| } |
| |
| /* Form 1 */ |
| if ((find == NULL) && (Rd == R2)) |
| { |
| lookup = op32 & ~Rd_mask & ~R2_mask; |
| find = (unsigned int *) bsearch (&lookup, sc_form_1, N_SC_FORM1, |
| sizeof (unsigned int), sc_compar); |
| code = find - sc_form_1 + N_SC_FORM0; |
| r = Rd; |
| } |
| |
| /* Form 2 */ |
| if (find == NULL) |
| { |
| lookup = op32 & ~R1_mask; |
| find = (unsigned int *) bsearch (&lookup, sc_form_2, N_SC_FORM2, |
| sizeof (unsigned int), sc_compar); |
| code = find - sc_form_2 + (N_SC_FORM0 + N_SC_FORM1); |
| r = R1; |
| } |
| |
| /* Form 3 */ |
| if (find == NULL) |
| { |
| lookup = op32 & ~Rd_mask; |
| find = (unsigned int *) bsearch (&lookup, sc_form_3, N_SC_FORM3, |
| sizeof (unsigned int), sc_compar); |
| code = find - sc_form_3 + (N_SC_FORM0 + N_SC_FORM1 + N_SC_FORM2); |
| r = Rd; |
| } |
| |
| *sc = (code << 5) | r; |
| |
| return (find != NULL); |
| } |
| |
| static int ATTRIBUTE_UNUSED |
| ft32_split_shortcode (unsigned int op32, unsigned int code15[2]) |
| { |
| int code3; |
| unsigned int code30; |
| |
| switch (op32 >> 27) |
| { |
| case 2: |
| code3 = 0; |
| break; |
| case 3: |
| code3 = 1; |
| break; |
| case 4: |
| code3 = 2; |
| break; |
| case 5: |
| code3 = 3; |
| break; |
| case 6: |
| code3 = 4; |
| break; |
| case 9: |
| code3 = 5; |
| break; |
| case 10: |
| code3 = 6; |
| break; |
| case 14: |
| code3 = 7; |
| break; |
| default: |
| code3 = -1; |
| break; |
| } |
| |
| if (code3 == -1) |
| { |
| code15[0] = 0; |
| code15[1] = 0; |
| return 0; |
| } |
| else |
| { |
| code30 = ((op32 & 0x07ffffff) << 3) | code3; |
| code15[0] = code30 & 0x7fff; |
| code15[1] = (code30 >> 15) & 0x7fff; |
| return 1; |
| } |
| } |
| |
| static unsigned int ATTRIBUTE_UNUSED |
| ft32_merge_shortcode (unsigned int code15[2]) |
| { |
| static const unsigned char pat3[] = { 2, 3, 4, 5, 6, 9, 10, 14 }; |
| |
| unsigned int code30 = (code15[1] << 15) | code15[0]; |
| unsigned int code27 = code30 >> 3; |
| unsigned int code3 = code30 & 7; |
| unsigned int pattern = pat3[code3]; |
| return (pattern << 27) | code27; |
| } |
| |
| static int ATTRIBUTE_UNUSED |
| ft32_decode_shortcode (unsigned int pc, unsigned int op32, unsigned int *sc) |
| { |
| int code3; |
| unsigned int code30; |
| unsigned int code15[2]; |
| size_t i; |
| |
| switch (op32 >> 27) |
| { |
| case 2: |
| code3 = 0; |
| break; |
| case 3: |
| code3 = 1; |
| break; |
| case 4: |
| code3 = 2; |
| break; |
| case 5: |
| code3 = 3; |
| break; |
| case 6: |
| code3 = 4; |
| break; |
| case 9: |
| code3 = 5; |
| break; |
| case 10: |
| code3 = 6; |
| break; |
| case 14: |
| code3 = 7; |
| break; |
| default: |
| code3 = -1; |
| break; |
| } |
| |
| if (code3 == -1) |
| return 0; |
| else |
| { |
| code30 = ((op32 & 0x07ffffff) << 3) | code3; |
| code15[0] = code30 & 0x7fff; |
| code15[1] = (code30 >> 15) & 0x7fff; |
| for (i = 0; i < 2; i++) |
| { |
| unsigned int code = code15[i] >> 5; |
| unsigned int r = code15[i] & 0x1f; |
| |
| if (code < 768) |
| { |
| if (code < N_SC_FORM0) |
| sc[i] = sc_form_0[code] | (r << 20) | (r << 15); |
| else if (code < (N_SC_FORM0 + N_SC_FORM1)) |
| sc[i] = sc_form_1[code - N_SC_FORM0] | (r << 20) | (r << 4); |
| else if (code < (N_SC_FORM0 + N_SC_FORM1 + N_SC_FORM2)) |
| sc[i] = sc_form_2[code - (N_SC_FORM0 + N_SC_FORM1)] |
| | (r << 15); |
| else |
| sc[i] = sc_form_3[code - |
| (N_SC_FORM0 + N_SC_FORM1 + N_SC_FORM2)] |
| | (r << 20); |
| } |
| else |
| { |
| int jtype = (code15[i] >> 9) & 15; |
| int offset = code15[i] & 511; |
| if (offset & 256) |
| offset -= 512; |
| if (jtype < 14) |
| sc[i] = |
| 0x00200000 | ((jtype >> 1) << 22) | ((jtype & 1) << 19); |
| else if (jtype == 14) |
| sc[i] = 0x00300000; |
| else |
| sc[i] = 0x00340000; |
| sc[i] |= ((pc >> 2) + offset); |
| } |
| } |
| return 1; |
| } |
| } |
