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Add 3DS memory map #446

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26 changes: 26 additions & 0 deletions src/rcheevos/consoleinfo.c
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Original file line number Diff line number Diff line change
Expand Up @@ -759,6 +759,29 @@ static const rc_memory_region_t _rc_memory_regions_nintendo_dsi[] = {
};
static const rc_memory_regions_t rc_memory_regions_nintendo_dsi = { _rc_memory_regions_nintendo_dsi, 2 };

/* ===== Nintendo 3DS ===== */
/* https://www.3dbrew.org/wiki/Memory_layout#ARM11_User-land_memory_regions */
static const rc_memory_region_t _rc_memory_regions_nintendo_3ds[] = {
{ 0x00000000U, 0x000FFFFFU, 0x00000000U, RC_MEMORY_TYPE_UNUSED, "" },
{ 0x00100000U, 0x03FFFFFFU, 0x00100000U, RC_MEMORY_TYPE_SYSTEM_RAM, "Code Binary" }, /* Usual place where ExeFS .code is loaded */
{ 0x04000000U, 0x07FFFFFFU, 0x04000000U, RC_MEMORY_TYPE_HARDWARE_CONTROLLER, "IPC Buffers" },
{ 0x08000000U, 0x0FFFFFFFU, 0x08000000U, RC_MEMORY_TYPE_SYSTEM_RAM, "Regular Heap and Stack" },
{ 0x10000000U, 0x13FFFFFFU, 0x10000000U, RC_MEMORY_TYPE_HARDWARE_CONTROLLER, "Shared Memory" },
{ 0x14000000U, 0x1BFFFFFFU, 0x14000000U, RC_MEMORY_TYPE_SYSTEM_RAM, "Linear Heap" }, /* Sometimes ExeFS .code is actually loaded here */
{ 0x1C000000U, 0x1E7FFFFFU, 0x1C000000U, RC_MEMORY_TYPE_UNUSED, "" },
{ 0x1E800000U, 0x1EBFFFFFU, 0x1E800000U, RC_MEMORY_TYPE_SYSTEM_RAM, "New 3DS Memory" },
{ 0x1EC00000U, 0x1EFFFFFFU, 0x1EC00000U, RC_MEMORY_TYPE_HARDWARE_CONTROLLER, "I/O Registers" },
{ 0x1F000000U, 0x1F5FFFFFU, 0x1F000000U, RC_MEMORY_TYPE_VIDEO_RAM, "VRAM" },
{ 0x1F600000U, 0x1FEFFFFFU, 0x1F600000U, RC_MEMORY_TYPE_UNUSED, "" },
{ 0x1FF00000U, 0x1FF7FFFFU, 0x1FF00000U, RC_MEMORY_TYPE_HARDWARE_CONTROLLER, "DSP Memory" },
{ 0x1FF80000U, 0x1FF81FFFU, 0x1FF80000U, RC_MEMORY_TYPE_READONLY, "Configuration Memory" },
{ 0x1FF82000U, 0x1FFFFFFFU, 0x1FF82000U, RC_MEMORY_TYPE_SYSTEM_RAM, "Thread Local Storage" }, /* Most of this is actually unused in practice */
{ 0x20000000U, 0x2FFFFFFFU, 0x20000000U, RC_MEMORY_TYPE_UNUSED, "" },
{ 0x30000000U, 0x37FFFFFFU, 0x30000000U, RC_MEMORY_TYPE_SYSTEM_RAM, "New Linear Heap" }, /* Newer games use this as the linear heap base instead */
{ 0x38000000U, 0x3FFFFFFFU, 0x38000000U, RC_MEMORY_TYPE_SYSTEM_RAM, "New Linear Heap (New 3DS Exclusive)" } /* New 3DS exclusive space for the newer linear heap */
};
static const rc_memory_regions_t rc_memory_regions_nintendo_3ds = { _rc_memory_regions_nintendo_3ds, 17 };

/* ===== Oric ===== */
static const rc_memory_region_t _rc_memory_regions_oric[] = {
/* actual size depends on machine type - up to 64KB */
Expand Down Expand Up @@ -1133,6 +1156,9 @@ const rc_memory_regions_t* rc_console_memory_regions(uint32_t console_id)
case RC_CONSOLE_NINTENDO_DSI:
return &rc_memory_regions_nintendo_dsi;

case RC_CONSOLE_NINTENDO_3DS:
return &rc_memory_regions_nintendo_3ds;

case RC_CONSOLE_ORIC:
return &rc_memory_regions_oric;

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1 change: 1 addition & 0 deletions test/rcheevos/test_consoleinfo.c
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Expand Up @@ -163,6 +163,7 @@ void test_consoleinfo(void) {
TEST_PARAMS2(test_memory, RC_CONSOLE_NEO_GEO_CD, 0x010000);
TEST_PARAMS2(test_memory, RC_CONSOLE_NINTENDO, 0x010000);
TEST_PARAMS2(test_memory, RC_CONSOLE_NINTENDO_64, 0x800000);
TEST_PARAMS2(test_memory, RC_CONSOLE_NINTENDO_3DS, 0x40000000);
TEST_PARAMS2(test_memory, RC_CONSOLE_NINTENDO_DS, 0x1004000);
TEST_PARAMS2(test_memory, RC_CONSOLE_NINTENDO_DSI, 0x1004000);
TEST_PARAMS2(test_memory, RC_CONSOLE_ORIC, 0x010000);
Expand Down
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