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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -2,3 +2,7 @@ | |
| .DS_Store | ||
| /build | ||
| /output | ||
| /src/AlloyLoader/alloy-loader | ||
| *.o | ||
| *.bin | ||
| *.elf | ||
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Submodule Alloy
updated
from 932980 to b2d52f
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| #include <bmfs/bmfs.h> | ||
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| #include "syscalls.h" | ||
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| extern unsigned char sector[4096]; | ||
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| static bmfs_uint64 round_to_block(bmfs_uint64 size); | ||
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| void _start(void) | ||
| { | ||
| /* This is the sector that the file | ||
| * system begins at. */ | ||
| const bmfs_uint64 fs_offset = 8; | ||
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| /* Number of arguments passed to Alloy. */ | ||
| int argc = 1; | ||
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| /* The arguments passed to Alloy. */ | ||
| const char *argv[] = { | ||
| "alloy", | ||
| 0 | ||
| }; | ||
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| /* Where Alloy will be loaded. */ | ||
| void (*alloy_entry)(int, const char **argv) = (void(*)(int, const char **)) 0x200000; | ||
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| /* Read the file system header */ | ||
| b_disk_read(sector, fs_offset, 1, 0); | ||
| if ((sector[0] != 'B') | ||
| || (sector[1] != 'M') | ||
| || (sector[2] != 'F') | ||
| || (sector[3] != 'S')) | ||
| { | ||
| b_output("Not a BMFS formatted drive.\n"); | ||
| return; | ||
| } | ||
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| struct BMFSEntry *root_entry = (struct BMFSEntry *) §or[512]; | ||
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| bmfs_uint64 dir_offset = root_entry->Offset; | ||
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| unsigned long int read_count = b_disk_read(sector, fs_offset + (dir_offset / 4096), 1, 0); | ||
| if (read_count != 1) | ||
| { | ||
| b_output("Failed to read '/'.\n"); | ||
| return; | ||
| } | ||
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| /* Look for the '/sbin' directory. */ | ||
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| struct BMFSEntry *sbin_ent = BMFS_NULL; | ||
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| for (bmfs_uint64 i = 0; i < 4096; i += 256) | ||
| { | ||
| struct BMFSEntry *ent = (struct BMFSEntry *) §or[i]; | ||
| if ((ent->Name[0] == 'S') | ||
| && (ent->Name[1] == 'y') | ||
| && (ent->Name[2] == 's') | ||
| && (ent->Name[3] == 't') | ||
| && (ent->Name[4] == 'e') | ||
| && (ent->Name[5] == 'm') | ||
| && (ent->Name[6] == 0)) | ||
| { | ||
| b_output("Found '/System'.\n"); | ||
| sbin_ent = ent; | ||
| break; | ||
| } | ||
| } | ||
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| if (sbin_ent == BMFS_NULL) | ||
| { | ||
| b_output("Failed to find '/System'.\n"); | ||
| return; | ||
| } | ||
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| bmfs_uint64 sbin_offset = sbin_ent->Offset; | ||
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| read_count = b_disk_read(sector, fs_offset + (sbin_offset / 4096), 1, 0); | ||
| if (read_count != 1) | ||
| { | ||
| b_output("Failed to read '/System'.\n"); | ||
| return; | ||
| } | ||
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| struct BMFSEntry *alloy_ent = BMFS_NULL; | ||
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| for (bmfs_uint64 i = 0; i < 4096; i += 256) | ||
| { | ||
| struct BMFSEntry *ent = (struct BMFSEntry *) §or[i]; | ||
| if ((ent->Name[0] == 'a') | ||
| && (ent->Name[1] == 'l') | ||
| && (ent->Name[2] == 'l') | ||
| && (ent->Name[3] == 'o') | ||
| && (ent->Name[4] == 'y') | ||
| && (ent->Name[5] == '.') | ||
| && (ent->Name[6] == 'b') | ||
| && (ent->Name[7] == 'i') | ||
| && (ent->Name[8] == 'n') | ||
| && (ent->Name[9] == 0)) | ||
| { | ||
| b_output("Found '/System/alloy.bin'.\n"); | ||
| alloy_ent = ent; | ||
| break; | ||
| } | ||
| } | ||
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| if (alloy_ent == BMFS_NULL) | ||
| { | ||
| b_output("Failed to find '/System/alloy.bin'.\n"); | ||
| return; | ||
| } | ||
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| bmfs_uint64 alloy_sector = alloy_ent->Offset; | ||
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| bmfs_uint64 alloy_size = alloy_ent->Size; | ||
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| read_count = b_disk_read(alloy_entry, fs_offset + (alloy_sector / 4096), round_to_block(alloy_size), 0); | ||
| if (read_count != round_to_block(alloy_size)) | ||
| { | ||
| b_output("Failed to read '/System/alloy.bin'.\n"); | ||
| return; | ||
| } | ||
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| alloy_entry(argc, argv); | ||
| } | ||
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| static bmfs_uint64 round_to_block(bmfs_uint64 size) | ||
| { | ||
| return ((size + (4095)) / 4096) * 4096; | ||
| } | ||
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| unsigned char sector[4096]; |
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