/*
Copyright (C) 2006 yopyop
Copyright (C) 2008-2012 DeSmuME team
This file 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 file 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 the this software. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cmath>
#include "cp15.h"
#include "MMU.h"
#include "NDSSystem.h"
#define cpu (&ARMPROC)
#define TEMPLATE template<int PROCNUM>
static const uint16_t getsinetbl[] =
{
0x0000, 0x0324, 0x0648, 0x096A, 0x0C8C, 0x0FAB, 0x12C8, 0x15E2,
0x18F9, 0x1C0B, 0x1F1A, 0x2223, 0x2528, 0x2826, 0x2B1F, 0x2E11,
0x30FB, 0x33DF, 0x36BA, 0x398C, 0x3C56, 0x3F17, 0x41CE, 0x447A,
0x471C, 0x49B4, 0x4C3F, 0x4EBF, 0x5133, 0x539B, 0x55F5, 0x5842,
0x5A82, 0x5CB3, 0x5ED7, 0x60EB, 0x62F1, 0x64E8, 0x66CF, 0x68A6,
0x6A6D, 0x6C23, 0x6DC9, 0x6F5E, 0x70E2, 0x7254, 0x73B5, 0x7504,
0x7641, 0x776B, 0x7884, 0x7989, 0x7A7C, 0x7B5C, 0x7C29, 0x7CE3,
0x7D89, 0x7E1D, 0x7E9C, 0x7F09, 0x7F61, 0x7FA6, 0x7FD8, 0x7FF5
};
static const uint16_t getpitchtbl[] =
{
0x0000, 0x003B, 0x0076, 0x00B2, 0x00ED, 0x0128, 0x0164, 0x019F,
0x01DB, 0x0217, 0x0252, 0x028E, 0x02CA, 0x0305, 0x0341, 0x037D,
0x03B9, 0x03F5, 0x0431, 0x046E, 0x04AA, 0x04E6, 0x0522, 0x055F,
0x059B, 0x05D8, 0x0614, 0x0651, 0x068D, 0x06CA, 0x0707, 0x0743,
0x0780, 0x07BD, 0x07FA, 0x0837, 0x0874, 0x08B1, 0x08EF, 0x092C,
0x0969, 0x09A7, 0x09E4, 0x0A21, 0x0A5F, 0x0A9C, 0x0ADA, 0x0B18,
0x0B56, 0x0B93, 0x0BD1, 0x0C0F, 0x0C4D, 0x0C8B, 0x0CC9, 0x0D07,
0x0D45, 0x0D84, 0x0DC2, 0x0E00, 0x0E3F, 0x0E7D, 0x0EBC, 0x0EFA,
0x0F39, 0x0F78, 0x0FB6, 0x0FF5, 0x1034, 0x1073, 0x10B2, 0x10F1,
0x1130, 0x116F, 0x11AE, 0x11EE, 0x122D, 0x126C, 0x12AC, 0x12EB,
0x132B, 0x136B, 0x13AA, 0x13EA, 0x142A, 0x146A, 0x14A9, 0x14E9,
0x1529, 0x1569, 0x15AA, 0x15EA, 0x162A, 0x166A, 0x16AB, 0x16EB,
0x172C, 0x176C, 0x17AD, 0x17ED, 0x182E, 0x186F, 0x18B0, 0x18F0,
0x1931, 0x1972, 0x19B3, 0x19F5, 0x1A36, 0x1A77, 0x1AB8, 0x1AFA,
0x1B3B, 0x1B7D, 0x1BBE, 0x1C00, 0x1C41, 0x1C83, 0x1CC5, 0x1D07,
0x1D48, 0x1D8A, 0x1DCC, 0x1E0E, 0x1E51, 0x1E93, 0x1ED5, 0x1F17,
0x1F5A, 0x1F9C, 0x1FDF, 0x2021, 0x2064, 0x20A6, 0x20E9, 0x212C,
0x216F, 0x21B2, 0x21F5, 0x2238, 0x227B, 0x22BE, 0x2301, 0x2344,
0x2388, 0x23CB, 0x240E, 0x2452, 0x2496, 0x24D9, 0x251D, 0x2561,
0x25A4, 0x25E8, 0x262C, 0x2670, 0x26B4, 0x26F8, 0x273D, 0x2781,
0x27C5, 0x280A, 0x284E, 0x2892, 0x28D7, 0x291C, 0x2960, 0x29A5,
0x29EA, 0x2A2F, 0x2A74, 0x2AB9, 0x2AFE, 0x2B43, 0x2B88, 0x2BCD,
0x2C13, 0x2C58, 0x2C9D, 0x2CE3, 0x2D28, 0x2D6E, 0x2DB4, 0x2DF9,
0x2E3F, 0x2E85, 0x2ECB, 0x2F11, 0x2F57, 0x2F9D, 0x2FE3, 0x302A,
0x3070, 0x30B6, 0x30FD, 0x3143, 0x318A, 0x31D0, 0x3217, 0x325E,
0x32A5, 0x32EC, 0x3332, 0x3379, 0x33C1, 0x3408, 0x344F, 0x3496,
0x34DD, 0x3525, 0x356C, 0x35B4, 0x35FB, 0x3643, 0x368B, 0x36D3,
0x371A, 0x3762, 0x37AA, 0x37F2, 0x383A, 0x3883, 0x38CB, 0x3913,
0x395C, 0x39A4, 0x39ED, 0x3A35, 0x3A7E, 0x3AC6, 0x3B0F, 0x3B58,
0x3BA1, 0x3BEA, 0x3C33, 0x3C7C, 0x3CC5, 0x3D0E, 0x3D58, 0x3DA1,
0x3DEA, 0x3E34, 0x3E7D, 0x3EC7, 0x3F11, 0x3F5A, 0x3FA4, 0x3FEE,
0x4038, 0x4082, 0x40CC, 0x4116, 0x4161, 0x41AB, 0x41F5, 0x4240,
0x428A, 0x42D5, 0x431F, 0x436A, 0x43B5, 0x4400, 0x444B, 0x4495,
0x44E1, 0x452C, 0x4577, 0x45C2, 0x460D, 0x4659, 0x46A4, 0x46F0,
0x473B, 0x4787, 0x47D3, 0x481E, 0x486A, 0x48B6, 0x4902, 0x494E,
0x499A, 0x49E6, 0x4A33, 0x4A7F, 0x4ACB, 0x4B18, 0x4B64, 0x4BB1,
0x4BFE, 0x4C4A, 0x4C97, 0x4CE4, 0x4D31, 0x4D7E, 0x4DCB, 0x4E18,
0x4E66, 0x4EB3, 0x4F00, 0x4F4E, 0x4F9B, 0x4FE9, 0x5036, 0x5084,
0x50D2, 0x5120, 0x516E, 0x51BC, 0x520A, 0x5258, 0x52A6, 0x52F4,
0x5343, 0x5391, 0x53E0, 0x542E, 0x547D, 0x54CC, 0x551A, 0x5569,
0x55B8, 0x5607, 0x5656, 0x56A5, 0x56F4, 0x5744, 0x5793, 0x57E2,
0x5832, 0x5882, 0x58D1, 0x5921, 0x5971, 0x59C1, 0x5A10, 0x5A60,
0x5AB0, 0x5B01, 0x5B51, 0x5BA1, 0x5BF1, 0x5C42, 0x5C92, 0x5CE3,
0x5D34, 0x5D84, 0x5DD5, 0x5E26, 0x5E77, 0x5EC8, 0x5F19, 0x5F6A,
0x5FBB, 0x600D, 0x605E, 0x60B0, 0x6101, 0x6153, 0x61A4, 0x61F6,
0x6248, 0x629A, 0x62EC, 0x633E, 0x6390, 0x63E2, 0x6434, 0x6487,
0x64D9, 0x652C, 0x657E, 0x65D1, 0x6624, 0x6676, 0x66C9, 0x671C,
0x676F, 0x67C2, 0x6815, 0x6869, 0x68BC, 0x690F, 0x6963, 0x69B6,
0x6A0A, 0x6A5E, 0x6AB1, 0x6B05, 0x6B59, 0x6BAD, 0x6C01, 0x6C55,
0x6CAA, 0x6CFE, 0x6D52, 0x6DA7, 0x6DFB, 0x6E50, 0x6EA4, 0x6EF9,
0x6F4E, 0x6FA3, 0x6FF8, 0x704D, 0x70A2, 0x70F7, 0x714D, 0x71A2,
0x71F7, 0x724D, 0x72A2, 0x72F8, 0x734E, 0x73A4, 0x73FA, 0x7450,
0x74A6, 0x74FC, 0x7552, 0x75A8, 0x75FF, 0x7655, 0x76AC, 0x7702,
0x7759, 0x77B0, 0x7807, 0x785E, 0x78B4, 0x790C, 0x7963, 0x79BA,
0x7A11, 0x7A69, 0x7AC0, 0x7B18, 0x7B6F, 0x7BC7, 0x7C1F, 0x7C77,
0x7CCF, 0x7D27, 0x7D7F, 0x7DD7, 0x7E2F, 0x7E88, 0x7EE0, 0x7F38,
0x7F91, 0x7FEA, 0x8042, 0x809B, 0x80F4, 0x814D, 0x81A6, 0x81FF,
0x8259, 0x82B2, 0x830B, 0x8365, 0x83BE, 0x8418, 0x8472, 0x84CB,
0x8525, 0x857F, 0x85D9, 0x8633, 0x868E, 0x86E8, 0x8742, 0x879D,
0x87F7, 0x8852, 0x88AC, 0x8907, 0x8962, 0x89BD, 0x8A18, 0x8A73,
0x8ACE, 0x8B2A, 0x8B85, 0x8BE0, 0x8C3C, 0x8C97, 0x8CF3, 0x8D4F,
0x8DAB, 0x8E07, 0x8E63, 0x8EBF, 0x8F1B, 0x8F77, 0x8FD4, 0x9030,
0x908C, 0x90E9, 0x9146, 0x91A2, 0x91FF, 0x925C, 0x92B9, 0x9316,
0x9373, 0x93D1, 0x942E, 0x948C, 0x94E9, 0x9547, 0x95A4, 0x9602,
0x9660, 0x96BE, 0x971C, 0x977A, 0x97D8, 0x9836, 0x9895, 0x98F3,
0x9952, 0x99B0, 0x9A0F, 0x9A6E, 0x9ACD, 0x9B2C, 0x9B8B, 0x9BEA,
0x9C49, 0x9CA8, 0x9D08, 0x9D67, 0x9DC7, 0x9E26, 0x9E86, 0x9EE6,
0x9F46, 0x9FA6, 0xA006, 0xA066, 0xA0C6, 0xA127, 0xA187, 0xA1E8,
0xA248, 0xA2A9, 0xA30A, 0xA36B, 0xA3CC, 0xA42D, 0xA48E, 0xA4EF,
0xA550, 0xA5B2, 0xA613, 0xA675, 0xA6D6, 0xA738, 0xA79A, 0xA7FC,
0xA85E, 0xA8C0, 0xA922, 0xA984, 0xA9E7, 0xAA49, 0xAAAC, 0xAB0E,
0xAB71, 0xABD4, 0xAC37, 0xAC9A, 0xACFD, 0xAD60, 0xADC3, 0xAE27,
0xAE8A, 0xAEED, 0xAF51, 0xAFB5, 0xB019, 0xB07C, 0xB0E0, 0xB145,
0xB1A9, 0xB20D, 0xB271, 0xB2D6, 0xB33A, 0xB39F, 0xB403, 0xB468,
0xB4CD, 0xB532, 0xB597, 0xB5FC, 0xB662, 0xB6C7, 0xB72C, 0xB792,
0xB7F7, 0xB85D, 0xB8C3, 0xB929, 0xB98F, 0xB9F5, 0xBA5B, 0xBAC1,
0xBB28, 0xBB8E, 0xBBF5, 0xBC5B, 0xBCC2, 0xBD29, 0xBD90, 0xBDF7,
0xBE5E, 0xBEC5, 0xBF2C, 0xBF94, 0xBFFB, 0xC063, 0xC0CA, 0xC132,
0xC19A, 0xC202, 0xC26A, 0xC2D2, 0xC33A, 0xC3A2, 0xC40B, 0xC473,
0xC4DC, 0xC544, 0xC5AD, 0xC616, 0xC67F, 0xC6E8, 0xC751, 0xC7BB,
0xC824, 0xC88D, 0xC8F7, 0xC960, 0xC9CA, 0xCA34, 0xCA9E, 0xCB08,
0xCB72, 0xCBDC, 0xCC47, 0xCCB1, 0xCD1B, 0xCD86, 0xCDF1, 0xCE5B,
0xCEC6, 0xCF31, 0xCF9C, 0xD008, 0xD073, 0xD0DE, 0xD14A, 0xD1B5,
0xD221, 0xD28D, 0xD2F8, 0xD364, 0xD3D0, 0xD43D, 0xD4A9, 0xD515,
0xD582, 0xD5EE, 0xD65B, 0xD6C7, 0xD734, 0xD7A1, 0xD80E, 0xD87B,
0xD8E9, 0xD956, 0xD9C3, 0xDA31, 0xDA9E, 0xDB0C, 0xDB7A, 0xDBE8,
0xDC56, 0xDCC4, 0xDD32, 0xDDA0, 0xDE0F, 0xDE7D, 0xDEEC, 0xDF5B,
0xDFC9, 0xE038, 0xE0A7, 0xE116, 0xE186, 0xE1F5, 0xE264, 0xE2D4,
0xE343, 0xE3B3, 0xE423, 0xE493, 0xE503, 0xE573, 0xE5E3, 0xE654,
0xE6C4, 0xE735, 0xE7A5, 0xE816, 0xE887, 0xE8F8, 0xE969, 0xE9DA,
0xEA4B, 0xEABC, 0xEB2E, 0xEB9F, 0xEC11, 0xEC83, 0xECF5, 0xED66,
0xEDD9, 0xEE4B, 0xEEBD, 0xEF2F, 0xEFA2, 0xF014, 0xF087, 0xF0FA,
0xF16D, 0xF1E0, 0xF253, 0xF2C6, 0xF339, 0xF3AD, 0xF420, 0xF494,
0xF507, 0xF57B, 0xF5EF, 0xF663, 0xF6D7, 0xF74C, 0xF7C0, 0xF834,
0xF8A9, 0xF91E, 0xF992, 0xFA07, 0xFA7C, 0xFAF1, 0xFB66, 0xFBDC,
0xFC51, 0xFCC7, 0xFD3C, 0xFDB2, 0xFE28, 0xFE9E, 0xFF14, 0xFF8A
};
static const uint8_t getvoltbl[] =
{
0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x03, 0x03,
0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
0x05, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06, 0x06,
0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x08, 0x08, 0x08, 0x08,
0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09,
0x09, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0A, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B, 0x0B,
0x0B, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0E,
0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x10, 0x10, 0x10, 0x10, 0x10,
0x10, 0x11, 0x11, 0x11, 0x11, 0x11, 0x12, 0x12, 0x12, 0x12, 0x12, 0x13, 0x13, 0x13, 0x13, 0x14,
0x14, 0x14, 0x14, 0x14, 0x15, 0x15, 0x15, 0x15, 0x16, 0x16, 0x16, 0x16, 0x17, 0x17, 0x17, 0x18,
0x18, 0x18, 0x18, 0x19, 0x19, 0x19, 0x19, 0x1A, 0x1A, 0x1A, 0x1B, 0x1B, 0x1B, 0x1C, 0x1C, 0x1C,
0x1D, 0x1D, 0x1D, 0x1E, 0x1E, 0x1E, 0x1F, 0x1F, 0x1F, 0x20, 0x20, 0x20, 0x21, 0x21, 0x22, 0x22,
0x22, 0x23, 0x23, 0x24, 0x24, 0x24, 0x25, 0x25, 0x26, 0x26, 0x27, 0x27, 0x27, 0x28, 0x28, 0x29,
0x29, 0x2A, 0x2A, 0x2B, 0x2B, 0x2C, 0x2C, 0x2D, 0x2D, 0x2E, 0x2E, 0x2F, 0x2F, 0x30, 0x31, 0x31,
0x32, 0x32, 0x33, 0x33, 0x34, 0x35, 0x35, 0x36, 0x36, 0x37, 0x38, 0x38, 0x39, 0x3A, 0x3A, 0x3B,
0x3C, 0x3C, 0x3D, 0x3E, 0x3F, 0x3F, 0x40, 0x41, 0x42, 0x42, 0x43, 0x44, 0x45, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4A, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x52, 0x53, 0x54, 0x55,
0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x67,
0x68, 0x69, 0x6A, 0x6B, 0x6D, 0x6E, 0x6F, 0x71, 0x72, 0x73, 0x75, 0x76, 0x77, 0x79, 0x7A, 0x7B,
0x7D, 0x7E, 0x7F, 0x20, 0x21, 0x21, 0x21, 0x22, 0x22, 0x23, 0x23, 0x23, 0x24, 0x24, 0x25, 0x25,
0x26, 0x26, 0x26, 0x27, 0x27, 0x28, 0x28, 0x29, 0x29, 0x2A, 0x2A, 0x2B, 0x2B, 0x2C, 0x2C, 0x2D,
0x2D, 0x2E, 0x2E, 0x2F, 0x2F, 0x30, 0x30, 0x31, 0x31, 0x32, 0x33, 0x33, 0x34, 0x34, 0x35, 0x36,
0x36, 0x37, 0x37, 0x38, 0x39, 0x39, 0x3A, 0x3B, 0x3B, 0x3C, 0x3D, 0x3E, 0x3E, 0x3F, 0x40, 0x40,
0x41, 0x42, 0x43, 0x43, 0x44, 0x45, 0x46, 0x47, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4D,
0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D,
0x5E, 0x5F, 0x60, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6F, 0x70,
0x71, 0x73, 0x74, 0x75, 0x77, 0x78, 0x79, 0x7B, 0x7C, 0x7E, 0x7E, 0x40, 0x41, 0x42, 0x43, 0x43,
0x44, 0x45, 0x46, 0x47, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51,
0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x61,
0x62, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6B, 0x6C, 0x6D, 0x6E, 0x70, 0x71, 0x72, 0x74, 0x75,
0x76, 0x78, 0x79, 0x7B, 0x7C, 0x7D, 0x7E, 0x40, 0x41, 0x42, 0x42, 0x43, 0x44, 0x45, 0x46, 0x46,
0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6A, 0x6C, 0x6D, 0x6E, 0x6F, 0x71, 0x72, 0x73, 0x75, 0x76, 0x77, 0x79, 0x7A,
0x7C, 0x7D, 0x7E, 0x7F
};
TEMPLATE static uint32_t bios_nop()
{
return 3;
}
TEMPLATE static uint32_t WaitByLoop()
{
uint32_t elapsed;
if (PROCNUM == ARMCPU_ARM9)
{
if (cp15.ctrl & ((1 << 16) | (1 << 18))) // DTCM or ITCM is on (cache)
elapsed = cpu->R[0] * 2;
else
elapsed = cpu->R[0] * 8;
}
else
elapsed = cpu->R[0] * 4;
cpu->R[0] = 0;
return elapsed;
}
TEMPLATE static uint32_t wait4IRQ()
{
cpu->waitIRQ = true;
cpu->halt_IE_and_IF = true;
return 1;
}
TEMPLATE static uint32_t intrWaitARM()
{
// TODO - account for differences between arm7 and arm9 (according to gbatek, the "bug doesn't work")
const uint32_t intrFlagAdr = PROCNUM == ARMCPU_ARM7 ? 0x380FFF8 : (cp15.DTCMRegion & 0xFFFFF000) + 0x3FF8;
// set IME=1
// without this, no irq handlers can happen (even though IF&IE waits can happily happen)
// and so no bits in the OS irq flag variable can get set by the handlers
_MMU_write32<PROCNUM>(0x04000208, 1);
// analyze the OS irq flag variable
uint32_t intr = _MMU_read32<PROCNUM>(intrFlagAdr);
uint32_t intrFlag = cpu->R[1] & intr;
// if the user requested us to discard flags, then clear the flag(s) we're going to be waiting on.
// (be sure to only do this only on the first run through. use a little state machine to control that)
if (!cpu->intrWaitARM_state && cpu->R[0] == 1)
{
intr ^= intrFlag;
_MMU_write32<PROCNUM>(intrFlagAdr, intr);
// we want to make sure we wait at least once below
intrFlag = 0;
}
cpu->intrWaitARM_state = 1;
// now, if the condition is satisfied (and it won't be the first time through, no matter what, due to cares taken above)
if (intrFlag)
{
// write back the OS irq flags with the ones we were waiting for cleared
intr ^= intrFlag;
_MMU_write32<PROCNUM>(intrFlagAdr, intr);
cpu->intrWaitARM_state = 0;
return 1;
}
// the condition wasn't satisfied. this means that we need to halt, wait for some enabled interrupt,
// and then ensure that we return to this opcode again to check the condition again
cpu->waitIRQ = true;
cpu->halt_IE_and_IF = true;
// (rewire PC to jump back to this opcode)
uint32_t instructAddr = cpu->instruct_adr;
cpu->R[15] = instructAddr;
cpu->next_instruction = instructAddr;
return 1;
}
TEMPLATE static uint32_t waitVBlankARM()
{
cpu->R[0] = 1;
cpu->R[1] = 1;
return intrWaitARM<PROCNUM>();
}
TEMPLATE static uint32_t sleep()
{
_MMU_write08<PROCNUM>(0x04000301, 0xC0);
return 1;
}
TEMPLATE static uint32_t divide()
{
int32_t num = cpu->R[0];
int32_t dnum = cpu->R[1];
if (!dnum)
return 0;
int32_t res = num / dnum;
cpu->R[0] = res;
cpu->R[1] = num % dnum;
cpu->R[3] = std::abs(res);
return 6;
}
TEMPLATE static uint32_t copy()
{
uint32_t src = cpu->R[0];
uint32_t dst = cpu->R[1];
uint32_t cnt = cpu->R[2];
switch (BIT26(cnt))
{
case 0:
src &= 0xFFFFFFFE;
dst &= 0xFFFFFFFE;
switch (BIT24(cnt))
{
case 0:
cnt &= 0x1FFFFF;
while (cnt)
{
_MMU_write16<PROCNUM>(dst, _MMU_read16<PROCNUM>(src));
--cnt;
dst += 2;
src += 2;
}
break;
case 1:
{
uint16_t val = _MMU_read16<PROCNUM>(src);
cnt &= 0x1FFFFF;
while (cnt)
{
_MMU_write16<PROCNUM>(dst, val);
--cnt;
dst += 2;
}
break;
}
}
break;
case 1:
src &= 0xFFFFFFFC;
dst &= 0xFFFFFFFC;
switch (BIT24(cnt))
{
case 0:
cnt &= 0x1FFFFF;
while (cnt)
{
_MMU_write32<PROCNUM>(dst, _MMU_read32<PROCNUM>(src));
--cnt;
dst += 4;
src += 4;
}
break;
case 1:
{
uint32_t val = _MMU_read32<PROCNUM>(src);
cnt &= 0x1FFFFF;
while (cnt)
{
_MMU_write32<PROCNUM>(dst, val);
--cnt;
dst += 4;
}
break;
}
}
break;
}
return 1;
}
TEMPLATE static uint32_t fastCopy()
{
uint32_t src = cpu->R[0] & 0xFFFFFFFC;
uint32_t dst = cpu->R[1] & 0xFFFFFFFC;
uint32_t cnt = cpu->R[2];
switch (BIT24(cnt))
{
case 0:
cnt &= 0x1FFFFF;
while (cnt)
{
_MMU_write32<PROCNUM>(dst, _MMU_read32<PROCNUM>(src));
--cnt;
dst += 4;
src += 4;
}
break;
case 1:
{
uint32_t val = _MMU_read32<PROCNUM>(src);
cnt &= 0x1FFFFF;
while (cnt)
{
_MMU_write32<PROCNUM>(dst, val);
--cnt;
dst += 4;
}
break;
}
}
return 1;
}
TEMPLATE static uint32_t LZ77UnCompVram()
{
uint32_t source = cpu->R[0];
uint32_t dest = cpu->R[1];
uint32_t header = _MMU_read32<PROCNUM>(source);
source += 4;
if (!(source & 0xe000000) || !((source + ((header >> 8) & 0x1fffff)) & 0xe000000))
return 0;
int byteCount = 0;
int byteShift = 0;
uint32_t writeValue = 0;
int len = header >> 8;
while (len > 0)
{
uint8_t d = _MMU_read08<PROCNUM>(source++);
int i1, i2;
if (d)
{
for (i1 = 0; i1 < 8; ++i1)
{
if (d & 0x80)
{
uint16_t data = _MMU_read08<PROCNUM>(source++) << 8;
data |= _MMU_read08<PROCNUM>(source++);
int length = (data >> 12) + 3;
int offset = data & 0x0FFF;
uint32_t windowOffset = dest + byteCount - offset - 1;
for (i2 = 0; i2 < length; ++i2)
{
writeValue |= _MMU_read08<PROCNUM>(windowOffset++) << byteShift;
byteShift += 8;
++byteCount;
if (byteCount == 2)
{
_MMU_write16<PROCNUM>(dest, writeValue & 0xFFFF);
dest += 2;
byteCount = 0;
byteShift = 0;
writeValue = 0;
}
--len;
if (!len)
return 0;
}
}
else
{
writeValue |= _MMU_read08<PROCNUM>(source++) << byteShift;
byteShift += 8;
++byteCount;
if (byteCount == 2)
{
_MMU_write16<PROCNUM>(dest, writeValue & 0xFFFF);
dest += 2;
byteCount = 0;
byteShift = 0;
writeValue = 0;
}
--len;
if (!len)
return 0;
}
d <<= 1;
}
}
else
{
for (i1 = 0; i1 < 8; ++i1)
{
writeValue |= _MMU_read08<PROCNUM>(source++) << byteShift;
byteShift += 8;
++byteCount;
if (byteCount == 2)
{
_MMU_write16<PROCNUM>(dest, writeValue & 0xFFFF);
dest += 2;
byteShift = 0;
byteCount = 0;
writeValue = 0;
}
--len;
if (!len)
return 0;
}
}
}
return 1;
}
TEMPLATE static uint32_t LZ77UnCompWram()
{
uint32_t source = cpu->R[0];
uint32_t dest = cpu->R[1];
uint32_t header = _MMU_read32<PROCNUM>(source);
source += 4;
if (!(source & 0xe000000) || !((source + ((header >> 8) & 0x1fffff)) & 0xe000000))
return 0;
int len = header >> 8;
while (len > 0)
{
uint8_t d = _MMU_read08<PROCNUM>(source++);
int i1, i2;
if (d)
{
for (i1 = 0; i1 < 8; ++i1)
{
if (d & 0x80)
{
uint16_t data = _MMU_read08<PROCNUM>(source++) << 8;
data |= _MMU_read08<PROCNUM>(source++);
int length = (data >> 12) + 3;
int offset = data & 0x0FFF;
uint32_t windowOffset = dest - offset - 1;
for (i2 = 0; i2 < length; ++i2)
{
_MMU_write08<PROCNUM>(dest++, _MMU_read08<PROCNUM>(windowOffset++));
--len;
if (!len)
return 0;
}
}
else
{
_MMU_write08<PROCNUM>(dest++, _MMU_read08<PROCNUM>(source++));
--len;
if (!len)
return 0;
}
d <<= 1;
}
}
else
{
for (i1 = 0; i1 < 8; ++i1)
{
_MMU_write08<PROCNUM>(dest++, _MMU_read08<PROCNUM>(source++));
--len;
if (!len)
return 0;
}
}
}
return 1;
}
TEMPLATE static uint32_t RLUnCompVram()
{
uint32_t source = cpu->R[0];
uint32_t dest = cpu->R[1];
uint32_t header = _MMU_read32<PROCNUM>(source);
source += 4;
if (!(source & 0xe000000) || !((source + ((header >> 8) & 0x1fffff)) & 0xe000000))
return 0;
int len = header >> 8;
int byteCount = 0;
int byteShift = 0;
uint32_t writeValue = 0;
while (len > 0)
{
uint8_t d = _MMU_read08<PROCNUM>(source++);
int l = d & 0x7F;
int i;
if (d & 0x80)
{
uint8_t data = _MMU_read08<PROCNUM>(source++);
l += 3;
for (i = 0; i < l; ++i)
{
writeValue |= data << byteShift;
byteShift += 8;
++byteCount;
if (byteCount == 2)
{
_MMU_write16<PROCNUM>(dest, writeValue & 0xFFFF);
dest += 2;
byteCount = 0;
byteShift = 0;
writeValue = 0;
}
--len;
if (!len)
return 0;
}
}
else
{
++l;
for (i = 0; i < l; ++i)
{
writeValue |= _MMU_read08<PROCNUM>(source++) << byteShift;
byteShift += 8;
++byteCount;
if (byteCount == 2)
{
_MMU_write16<PROCNUM>(dest, writeValue & 0xFFFF);
dest += 2;
byteCount = 0;
byteShift = 0;
writeValue = 0;
}
--len;
if (!len)
return 0;
}
}
}
return 1;
}
TEMPLATE static uint32_t RLUnCompWram()
{
uint32_t source = cpu->R[0];
uint32_t dest = cpu->R[1];
uint32_t header = _MMU_read32<PROCNUM>(source);
source += 4;
if (!(source & 0xe000000) || !((source + ((header >> 8) & 0x1fffff)) & 0xe000000))
return 0;
int len = header >> 8;
while (len > 0)
{
uint8_t d = _MMU_read08<PROCNUM>(source++);
int l = d & 0x7F;
int i;
if (d & 0x80)
{
uint8_t data = _MMU_read08<PROCNUM>(source++);
l += 3;
for (i = 0; i < l; ++i)
{
_MMU_write08<PROCNUM>(dest++, data);
--len;
if (!len)
return 0;
}
}
else
{
++l;
for (i = 0; i < l; ++i)
{
_MMU_write08<PROCNUM>(dest++, _MMU_read08<PROCNUM>(source++));
--len;
if (!len)
return 0;
}
}
}
return 1;
}
TEMPLATE static uint32_t UnCompHuffman()
{
uint32_t source = cpu->R[0];
uint32_t dest = cpu->R[1];
uint32_t header = _MMU_read08<PROCNUM>(source);
source += 4;
if (!(source & 0xe000000) || !((source + ((header >> 8) & 0x1fffff)) & 0xe000000))
return 0;
uint8_t treeSize = _MMU_read08<PROCNUM>(source++);
uint32_t treeStart = source;
source += ((treeSize + 1) << 1) - 1; // minus because we already skipped one byte
int len = header >> 8;
uint32_t mask = 0x80000000;
uint32_t data = _MMU_read08<PROCNUM>(source);
source += 4;
int pos = 0;
uint8_t rootNode = _MMU_read08<PROCNUM>(treeStart);
uint8_t currentNode = rootNode;
int writeData = 0;
int byteShift = 0;
int byteCount = 0;
uint32_t writeValue = 0;
if ((header & 0x0F) == 8)
{
while (len > 0)
{
// take left
if (!pos)
++pos;
else
pos += ((currentNode & 0x3F) + 1) << 1;
if (data & mask)
{
// right
if (currentNode & 0x40)
writeData = 1;
currentNode = _MMU_read08<PROCNUM>(treeStart + pos + 1);
}
else
{
// left
if (currentNode & 0x80)
writeData = 1;
currentNode = _MMU_read08<PROCNUM>(treeStart + pos);
}
if (writeData)
{
writeValue |= currentNode << byteShift;
++byteCount;
byteShift += 8;
pos = 0;
currentNode = rootNode;
writeData = 0;
if (byteCount == 4)
{
byteCount = 0;
byteShift = 0;
_MMU_write08<PROCNUM>(dest, writeValue & 0xFF);
writeValue = 0;
dest += 4;
len -= 4;
}
}
mask >>= 1;
if (!mask)
{
mask = 0x80000000;
data = _MMU_read08<PROCNUM>(source);
source += 4;
}
}
}
else
{
int halfLen = 0;
int value = 0;
while (len > 0)
{
// take left
if (!pos)
++pos;
else
pos += ((currentNode & 0x3F) + 1) << 1;
if (data & mask)
{
// right
if (currentNode & 0x40)
writeData = 1;
currentNode = _MMU_read08<PROCNUM>(treeStart + pos + 1);
}
else
{
// left
if (currentNode & 0x80)
writeData = 1;
currentNode = _MMU_read08<PROCNUM>(treeStart + pos);
}
if (writeData)
{
if (!halfLen)
value |= currentNode;
else
value |= currentNode << 4;
halfLen += 4;
if (halfLen == 8)
{
writeValue |= value << byteShift;
++byteCount;
byteShift += 8;
halfLen = 0;
value = 0;
if (byteCount == 4)
{
byteCount = 0;
byteShift = 0;
_MMU_write08<PROCNUM>(dest, writeValue & 0xFF);
dest += 4;
writeValue = 0;
len -= 4;
}
}
pos = 0;
currentNode = rootNode;
writeData = 0;
}
mask >>= 1;
if (!mask)
{
mask = 0x80000000;
data = _MMU_read08<PROCNUM>(source);
source += 4;
}
}
}
return 1;
}
TEMPLATE static uint32_t BitUnPack()
{
uint32_t source = cpu->R[0];
uint32_t dest = cpu->R[1];
uint32_t header = cpu->R[2];
int len = _MMU_read16<PROCNUM>(header);
int bits = _MMU_read08<PROCNUM>(header + 2);
switch (bits)
{
case 1:
case 2:
case 4:
case 8:
break;
default:
return 0; // error
}
int dataSize = _MMU_read08<PROCNUM>(header + 3);
switch (dataSize)
{
case 1:
case 2:
case 4:
case 8:
case 16:
case 32:
break;
default:
return 0; // error
}
int revbits = 8 - bits;
uint32_t base = _MMU_read08<PROCNUM>(header + 4);
int addBase = base & 0x80000000 ? 1 : 0;
base &= 0x7fffffff;
int data = 0;
int bitwritecount = 0;
while (1)
{
len -= 1;
if (len < 0)
break;
int mask = 0xff >> revbits;
uint8_t b = _MMU_read08<PROCNUM>(source);
++source;
int bitcount = 0;
while (1)
{
if (bitcount >= 8)
break;
uint32_t d = b & mask;
uint32_t temp = d >> bitcount;
if (!temp && addBase)
temp += base;
data |= temp << bitwritecount;
bitwritecount += dataSize;
if (bitwritecount >= 32)
{
_MMU_write08<PROCNUM>(dest, data);
dest += 4;
data = 0;
bitwritecount = 0;
}
mask <<= bits;
bitcount += bits;
}
}
return 1;
}
TEMPLATE static uint32_t Diff8bitUnFilterWram()
{
uint32_t source = cpu->R[0];
uint32_t dest = cpu->R[1];
uint32_t header = _MMU_read08<PROCNUM>(source);
source += 4;
if (!(source & 0xe000000) || !((source + ((header >> 8) & 0x1fffff)) & 0xe000000))
return 0;
int len = header >> 8;
uint8_t data = _MMU_read08<PROCNUM>(source++);
_MMU_write08<PROCNUM>(dest++, data);
--len;
while (len > 0)
{
uint8_t diff = _MMU_read08<PROCNUM>(source++);
data += diff;
_MMU_write08<PROCNUM>(dest++, data);
--len;
}
return 1;
}
TEMPLATE static uint32_t Diff16bitUnFilter()
{
uint32_t source = cpu->R[0];
uint32_t dest = cpu->R[1];
uint32_t header = _MMU_read08<PROCNUM>(source);
source += 4;
if (!(source & 0xe000000) || !((source + ((header >> 8) & 0x1fffff)) & 0xe000000))
return 0;
int len = header >> 8;
uint16_t data = _MMU_read16<PROCNUM>(source);
source += 2;
_MMU_write16<PROCNUM>(dest, data);
dest += 2;
len -= 2;
while (len >= 2)
{
uint16_t diff = _MMU_read16<PROCNUM>(source);
source += 2;
data += diff;
_MMU_write16<PROCNUM>(dest, data);
dest += 2;
len -= 2;
}
return 1;
}
TEMPLATE static uint32_t bios_sqrt()
{
cpu->R[0] = static_cast<uint32_t>(std::sqrt(static_cast<double>(cpu->R[0])));
return 1;
}
TEMPLATE static uint32_t setHaltCR()
{
_MMU_write08<PROCNUM>(0x4000300+cpu->proc_ID, cpu->R[0] & 0xFF);
return 1;
}
TEMPLATE static uint32_t getSineTab()
{
// ds returns garbage according to gbatek, but we must protect ourselves
if (cpu->R[0] >= ARRAY_SIZE(getsinetbl))
{
printf("Invalid SWI getSineTab: %08X\n", cpu->R[0]);
return 1;
}
cpu->R[0] = getsinetbl[cpu->R[0]];
return 1;
}
TEMPLATE static uint32_t getPitchTab()
{
// ds returns garbage according to gbatek, but we must protect ourselves
if (cpu->R[0] >= ARRAY_SIZE(getpitchtbl))
{
printf("Invalid SWI getPitchTab: %08X\n", cpu->R[0]);
return 1;
}
cpu->R[0] = getpitchtbl[cpu->R[0]];
return 1;
}
TEMPLATE static uint32_t getVolumeTab()
{
// ds returns garbage according to gbatek, but we must protect ourselves
if (cpu->R[0] >= ARRAY_SIZE(getvoltbl))
{
printf("Invalid SWI getVolumeTab: %08X\n", cpu->R[0]);
return 1;
}
cpu->R[0] = getvoltbl[cpu->R[0]];
return 1;
}
TEMPLATE static uint32_t getCRC16()
{
// gbatek is wrong.
// dawn of sorrow uses this to checksum its save data;
// if this implementation is wrong, then it won't match what the real bios returns,
// and savefiles created with a bios will be invalid when loaded with non-bios (and vice-versa)
uint16_t crc = cpu->R[0] & 0xFFFF;
uint32_t datap = cpu->R[1];
uint32_t size = cpu->R[2] >> 1;
uint16_t currVal = 0;
const uint16_t val[] = { 0x0000, 0xCC01, 0xD801, 0x1400, 0xF001, 0x3C00, 0x2800, 0xE401, 0xA001, 0x6C00, 0x7800, 0xB401, 0x5000, 0x9C01, 0x8801, 0x4400 };
for (uint32_t i = 0; i < size; ++i)
{
currVal = _MMU_read16<PROCNUM>(datap + i * 2);
for (int j = 0; j < 4; ++j)
{
uint16_t tabVal = val[crc & 0xF];
crc >>= 4;
crc ^= tabVal;
uint16_t tempVal = currVal >> (4 * j);
tabVal = val[tempVal & 0xF];
crc ^= tabVal;
}
}
// R3 contains the last processed halfword
cpu->R[3] = currVal;
return 1;
}
TEMPLATE static uint32_t isDebugger()
{
// gbatek has additional specifications which are not emulated here
cpu->R[0] = 0;
return 1;
}
TEMPLATE static uint32_t SoundBias()
{
uint32_t curBias = _MMU_read32<ARMCPU_ARM7>(0x04000504);
uint32_t newBias = !curBias ? 0x000:0x200;
uint32_t delay = newBias > curBias ? newBias - curBias : curBias - newBias;
_MMU_write32<ARMCPU_ARM7>(0x04000504, newBias);
return cpu->R[1] * delay;
}
TEMPLATE static uint32_t getBootProcs()
{
cpu->R[0] = 0x00000A2E;
cpu->R[1] = 0x00002C3C;
cpu->R[3] = 0x000005FF;
return 1;
}
uint32_t (*ARM_swi_tab[][32])() =
{
{
bios_nop<ARMCPU_ARM9>, // 0x00
bios_nop<ARMCPU_ARM9>, // 0x01
bios_nop<ARMCPU_ARM9>, // 0x02
WaitByLoop<ARMCPU_ARM9>, // 0x03
intrWaitARM<ARMCPU_ARM9>, // 0x04
waitVBlankARM<ARMCPU_ARM9>, // 0x05
wait4IRQ<ARMCPU_ARM9>, // 0x06
bios_nop<ARMCPU_ARM9>, // 0x07
bios_nop<ARMCPU_ARM9>, // 0x08
divide<ARMCPU_ARM9>, // 0x09
bios_nop<ARMCPU_ARM9>, // 0x0A
copy<ARMCPU_ARM9>, // 0x0B
fastCopy<ARMCPU_ARM9>, // 0x0C
bios_sqrt<ARMCPU_ARM9>, // 0x0D
getCRC16<ARMCPU_ARM9>, // 0x0E
isDebugger<ARMCPU_ARM9>, // 0x0F
BitUnPack<ARMCPU_ARM9>, // 0x10
LZ77UnCompWram<ARMCPU_ARM9>, // 0x11
LZ77UnCompVram<ARMCPU_ARM9>, // 0x12
UnCompHuffman<ARMCPU_ARM9>, // 0x13
RLUnCompWram<ARMCPU_ARM9>, // 0x14
RLUnCompVram<ARMCPU_ARM9>, // 0x15
Diff8bitUnFilterWram<ARMCPU_ARM9>, // 0x16
bios_nop<ARMCPU_ARM9>, // 0x17
Diff16bitUnFilter<ARMCPU_ARM9>, // 0x18
bios_nop<ARMCPU_ARM9>, // 0x19
bios_nop<ARMCPU_ARM9>, // 0x1A
bios_nop<ARMCPU_ARM9>, // 0x1B
bios_nop<ARMCPU_ARM9>, // 0x1C
bios_nop<ARMCPU_ARM9>, // 0x1D
bios_nop<ARMCPU_ARM9>, // 0x1E
setHaltCR<ARMCPU_ARM9>, // 0x1F
},
{
bios_nop<ARMCPU_ARM7>, // 0x00
bios_nop<ARMCPU_ARM7>, // 0x01
bios_nop<ARMCPU_ARM7>, // 0x02
WaitByLoop<ARMCPU_ARM7>, // 0x03
intrWaitARM<ARMCPU_ARM7>, // 0x04
waitVBlankARM<ARMCPU_ARM7>, // 0x05
wait4IRQ<ARMCPU_ARM7>, // 0x06
sleep<ARMCPU_ARM7>, // 0x07
SoundBias<ARMCPU_ARM7>, // 0x08
divide<ARMCPU_ARM7>, // 0x09
bios_nop<ARMCPU_ARM7>, // 0x0A
copy<ARMCPU_ARM7>, // 0x0B
fastCopy<ARMCPU_ARM7>, // 0x0C
bios_sqrt<ARMCPU_ARM7>, // 0x0D
getCRC16<ARMCPU_ARM7>, // 0x0E
isDebugger<ARMCPU_ARM7>, // 0x0F
BitUnPack<ARMCPU_ARM7>, // 0x10
LZ77UnCompWram<ARMCPU_ARM7>, // 0x11
LZ77UnCompVram<ARMCPU_ARM7>, // 0x12
UnCompHuffman<ARMCPU_ARM7>, // 0x13
RLUnCompWram<ARMCPU_ARM7>, // 0x14
RLUnCompVram<ARMCPU_ARM7>, // 0x15
Diff8bitUnFilterWram<ARMCPU_ARM7>, // 0x16
bios_nop<ARMCPU_ARM7>, // 0x17
bios_nop<ARMCPU_ARM7>, // 0x18
bios_nop<ARMCPU_ARM7>, // 0x19
getSineTab<ARMCPU_ARM7>, // 0x1A
getPitchTab<ARMCPU_ARM7>, // 0x1B
getVolumeTab<ARMCPU_ARM7>, // 0x1C
getBootProcs<ARMCPU_ARM7>, // 0x1D
bios_nop<ARMCPU_ARM7>, // 0x1E
setHaltCR<ARMCPU_ARM7>, // 0x1F
}
};