mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-10 13:33:24 -05:00
Abdessamad Derraz
76984e8bce
Four files, each with a verifiable origin. logo.tga and logo_red.tga come from the loader's own resources/logo.h: hook.c's fread maps FILE_LOGO_TGA to logoLL or logoLLRed depending on which path was opened, one array per file, so the extraction is exact. Both decode as valid RLE TGA at their declared lengths. lgp.zip and timetrav.zip carry crc 0 in Hypseus and in Daphne upstream, so MAME vouches for them instead. lgp maps onto MAME's set by base name, confirmed by the five members whose bytes already agreed, and the four that were missing came from the same set. timetrav is MAME's timetrv: tt061891.bin, 262144 bytes, crc a3d44219. The four Sega fonts stay open, and the profile now says why: the loader embeds one 128x256 atlas and one metrics table answering all four paths, so it substitutes for the originals rather than reproducing either.
257 lines
12 KiB
YAML
257 lines
12 KiB
YAML
emulator: Lindbergh Loader
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type: standalone
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core_classification: embedded_hle
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source: "https://github.com/lindbergh-loader/lindbergh-loader"
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upstream: "https://github.com/lindbergh-loader/lindbergh-loader"
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source_commit: "0af606d845b70339c335785c0eba68b47b78df3c"
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profiled_date: "2026-08-08"
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core_version: "2.1.4"
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display_name: "Sega - Lindbergh (Lindbergh Loader)"
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cores:
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- lindbergh-loader
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systems:
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- sega-lindbergh
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mode: standalone
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notes: |
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Runs the original Sega Lindbergh game binaries on Linux, built and executed
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as 32-bit x86. The launcher picks the game ELF, exports
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LD_PRELOAD=lindbergh.so and an
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LD_LIBRARY_PATH covering the loader directory, the original directory, the
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game directory and ".:lib:../lib", then system()s the ELF
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(lindbergh.c:315-378, 874-929). Platforms invoke it as lindbergh-loader
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(Batocera package and generator, RetroBat, ES-DE find rule LINDBERGH-LOADER).
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The Lindbergh hardware is emulated inside lindbergh.so with no external
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firmware. Hooked open() and fopen() redirect /dev/lbb (baseboard), /dev/i2c/0
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(eeprom), /dev/ttyS0 and /dev/ttyS1 (drive, ride, motion boards and card
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reader), /proc/bus/pci/01/00.0 and /proc/bus/pci/00/1f.0 to /dev/zero and
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answer from code (hook.c:43, 530-615, 641-853). The security board is DIP
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switches and test/service lines computed in securityBoard.c:98-140, with no
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keychip dump. eeprom.bin and sram.bin are created on first run and their
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contents synthesised: eepromSettings.c builds every amSysDataRecord section
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from constants and recomputes the CRCs (eeprom.c:33-48, baseBoard.c:60-74,
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eepromSettings.c:24-120). Card_01.crd and Card_02.crd are written from a
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56-byte header held in the binary (cardReader.c:227-247). lindbergh.ini and
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controls.ini are optional; both fall back to compiled-in defaults and can be
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emitted with --create (config.c:510-516, sdlInput.c:790-795).
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The one hard external dependency is the NVIDIA Cg runtime. findLibCg() checks
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LIBCG_PATH from the ini, then /app/lib32/libCg2.so, $APP_IMG_ROOT/usr/lib32/
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libCg2.so, ./libCg.so and $LINDBERGH_LOADER_CURRENT_DIR/libCg.so, and exits
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when none is present (shaderPatches.c:1028-1108). Cg 3.1 is a separate
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requirement: the game ELFs link libCg.so and libCgGL.so, which upstream
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vendors as libs/Cg-3.1.zip and installs into the runtime library directory
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(scripts/appimage/make-appimage.sh,
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scripts/flatpak/com.github.lindberghloader.yml:181-189, 242-245). Batocera
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copies per-game Cg variants into the ROM directory
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(lindberghGenerator.py:1027-1050).
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Shaders come from the game dump, not from the loader. cacheModedShaderFiles()
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reads ../fs/shader and /data/Shader relative to the ELF, patches the Cg
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source and serves the result back through the fopen, fread and ftell hooks
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(shaderCache.c:474-488, 555-678, hook.c:778-808, 1140-1212).
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Boot logos and console fonts were user-supplied until 2.0.1, which added
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built-in copies compiled into lindbergh.so and served from
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resources/logo.h and resources/font.h. The originals are read only when
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DISABLE_BUILTIN_LOGOS or DISABLE_BUILTIN_FONT is set, from the game
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directory (hook.c:655-744, 874-926, fread hook at 1159-1181). Batocera
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exposes both switches as ORIGINAL LOGOS and ORIGINAL FONTS.
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Custom cursors and crosshairs load from arbitrary ini paths with no default
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name and no built-in image (crossHair.c:142-186, customCursor.c:26-33).
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files:
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# -- NVIDIA Cg runtime --
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- name: libCg2.so
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system: sega-lindbergh
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required: true
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validation: [signature]
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description: "NVIDIA Cg 2.0.0.12 runtime used to recompile the game shaders"
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source_ref: "shaderPatches.c:1028-1108, shaderPatches.c:1110-1170"
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note: >-
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Searched at LIBCG_PATH, /app/lib32/libCg2.so, $APP_IMG_ROOT/usr/lib32/
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libCg2.so, then ./libCg.so and $LINDBERGH_LOADER_CURRENT_DIR/libCg.so. The
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loader reads 8 bytes at offset 0x226d84 and requires exactly "2.0.0.12";
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a missing file, a different version string or a failed dlopen of
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cgCreateContext, cgCreateProgram, cgGetProgramString, cgDestroyContext or
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cgDestroyProgram each call exit(EXIT_FAILURE). Upstream vendors the build
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as libs/libCg.so and both installers rename it to libCg2.so so it can sit
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beside the Cg 3.1 library of the same original name that the games link.
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- name: libCgGL.so
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system: sega-lindbergh
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required: true
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description: "NVIDIA Cg 3.1 OpenGL runtime linked by the game binaries"
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source_ref: "lindbergh.c:336-378, scripts/flatpak/com.github.lindberghloader.yml:181-189"
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note: >-
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Resolved by the dynamic linker for the game ELF through the
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LD_LIBRARY_PATH the launcher builds, not opened by loader code. Upstream
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takes it from Cg-3.1_April2012_x86.tgz and ships it in libs/Cg-3.1.zip.
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Game dumps generally carry their own copy in the game directory, so the
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Batocera generator only writes one when the file is absent or differs.
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- name: libCg.so
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system: sega-lindbergh
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required: true
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description: "NVIDIA Cg 3.1 runtime linked by the game binaries"
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source_ref: "lindbergh.c:336-378, scripts/flatpak/com.github.lindberghloader.yml:181-189"
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note: >-
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Same origin and mechanism as libCgGL.so, and a different build from the
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2.0.0.12 library the shader recompiler loads. Batocera keeps the two Cg
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generations apart as libCg.so.harley and libCg.so.other and copies the
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matching pair into the ROM directory per game, overwriting the dump's own
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copy for the titles where it renders shadows and textures incorrectly.
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# -- Lindbergh system libraries kept out of current distributions --
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- name: libcrypto.so.0.9.7
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system: sega-lindbergh
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required: false
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description: "OpenSSL 0.9.7 crypto library linked by the networked games"
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source_ref: "lindbergh.c:336-378, scripts/flatpak/com.github.lindberghloader.yml:244"
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note: >-
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Vendored as libs/libcrypto.so.0.9.7 and installed into the runtime library
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directory by both the AppImage and Flatpak builds. Resolved by the dynamic
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linker for the game ELF.
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- name: libssl.so.0.9.7
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system: sega-lindbergh
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required: false
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description: "OpenSSL 0.9.7 TLS library linked by the networked games"
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source_ref: "lindbergh.c:336-378, scripts/flatpak/com.github.lindberghloader.yml:245"
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note: "Vendored as libs/libssl.so.0.9.7, paired with libcrypto.so.0.9.7."
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- name: libopenal.so.0
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system: sega-lindbergh
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required: false
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description: "OpenAL runtime preloaded for Quiz Answer x Answer"
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source_ref: "lindbergh.c:22, lindbergh.c:315-328, lindbergh.c:882-890"
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note: >-
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When the ELF is q2satl_lind the launcher looks the file up through
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findPreloadLibrary and appends it to LD_PRELOAD. Absence prints "You might
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not get sound because libopenal.so.0 was not found" and the game still
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runs. Vendored as libs/libopenal.so.0.
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# -- Lindbergh boot program --
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- name: segaboot
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system: sega-lindbergh
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required: false
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crc32: "38d56318"
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validation: [crc32]
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description: "Sega Lindbergh boot and hardware check program, version 2.4"
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source_ref: "lindbergh.c:696-698, lindbergh.c:892-895, config.h:57-58, gameData.c:51-52"
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note: >-
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Run as "segaboot -t" under -s or --segaboot. detectGame() matches the
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ELF CRC32 against the table, where 0x38d56318 is Segaboot 2.4 and
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0xa518b18b the build carrying symbols. The comparison drives
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identification only: an unknown CRC logs a warning and startup continues.
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SEGABOOT 0x0027 and SEGABOOT_2_6 0x0030 in config.h are placeholders, not
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checksums, and no table entry uses them.
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# -- Lindbergh boot assets, replaced by built-in copies since 2.0.1 --
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- name: logo.tga
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system: sega-lindbergh
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required: false
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hle_fallback: true
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has_builtin: true
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description: "Lindbergh boot logo, read from /usr/lib/boot on the original system"
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source_ref: "hook.c:655-667, hook.c:888-900"
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note: >-
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Read from the game directory only when DISABLE_BUILTIN_LOGOS is set.
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Otherwise the logoLL array in resources/logo.h answers the read.
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- name: logo_red.tga
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system: sega-lindbergh
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required: false
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hle_fallback: true
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has_builtin: true
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description: "Lindbergh Red boot logo, read from /usr/lib/boot on the original system"
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source_ref: "hook.c:669-681, hook.c:874-886"
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note: >-
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Read from the game directory only when DISABLE_BUILTIN_LOGOS is set.
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Otherwise the logoLLRed array in resources/logo.h answers the read.
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- name: SEGA_KakuGothic-DB-Roman_12.tga
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system: sega-lindbergh
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required: false
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hle_fallback: true
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has_builtin: true
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description: "Sega Kaku Gothic console font texture"
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source_ref: "hook.c:718-730, hook.c:902-914"
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note: >-
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Read from the game directory only when DISABLE_BUILTIN_FONT is set.
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The built-in is one shared 128x256 atlas (fontTGA) and one metrics
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table (fontABC) answering all four font paths, so it substitutes for
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the Sega originals rather than reproducing either of them.
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Otherwise the fontTGA array in resources/font.h answers the read.
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- name: SEGA_KakuGothic-DB-Roman_12.abc
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system: sega-lindbergh
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required: false
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hle_fallback: true
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has_builtin: true
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description: "Sega Kaku Gothic console font metrics"
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source_ref: "hook.c:732-744, hook.c:916-928"
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note: >-
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Read from the game directory only when DISABLE_BUILTIN_FONT is set.
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The built-in is one shared 128x256 atlas (fontTGA) and one metrics
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table (fontABC) answering all four font paths, so it substitutes for
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the Sega originals rather than reproducing either of them.
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Otherwise the fontABC array in resources/font.h answers the read, with
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ftell returning fontABClen.
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- name: LucidaConsole_12.tga
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system: sega-lindbergh
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required: false
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hle_fallback: true
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has_builtin: true
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description: "Lucida Console font texture"
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source_ref: "hook.c:683-695"
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note: >-
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Read from the game directory only when DISABLE_BUILTIN_FONT is set.
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The built-in is one shared 128x256 atlas (fontTGA) and one metrics
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table (fontABC) answering all four font paths, so it substitutes for
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the Sega originals rather than reproducing either of them.
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Otherwise the fontTGA array in resources/font.h answers the read.
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- name: LucidaConsole_12.abc
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system: sega-lindbergh
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required: false
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hle_fallback: true
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has_builtin: true
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description: "Lucida Console font metrics"
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source_ref: "hook.c:697-709"
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note: >-
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Read from the game directory only when DISABLE_BUILTIN_FONT is set.
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The built-in is one shared 128x256 atlas (fontTGA) and one metrics
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table (fontABC) answering all four font paths, so it substitutes for
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the Sega originals rather than reproducing either of them.
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Otherwise the fontABC array in resources/font.h answers the read.
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# -- Lindbergh runtime configuration --
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- name: lindbergrc
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system: sega-lindbergh
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required: false
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description: "Lindbergh runtime configuration read by the games from /root"
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source_ref: "hook.c:650-653"
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note: >-
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The fopen hook rewrites /root/lindbergrc to lindbergrc in the game
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directory. The loader neither creates the file nor substitutes for it.
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- name: gamecontrollerdb.txt
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system: sega-lindbergh
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category: game_data
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required: false
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description: "SDL gamepad mappings added on top of the built-in table"
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source_ref: "lindbergh.c:415-430, lindbergh.c:478, sdlInput.c:209-217"
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note: >-
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Loaded from the path given by -d or --controllerdb, passed through the
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LINDBERGH_CONTROLS_DB_PATH environment variable. The built-in mappings in
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gameControllerMappings.c load first and remain when no file is supplied.
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