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zqxwce
ee5e7d0fa2
Introduces a new `exp` firmware variant on top of JB and ports the
`hv_vmm_present` sysctl rename to it.
Variant infrastructure
----------------------
- Adds `case exp` to `FirmwarePipeline.Variant`,
`VPhoneCLI.PatchFirmwareCLI.VariantOption`, and
`VPhoneVirtualMachine.Variant`. Every `switch variant` block in
`FirmwarePipeline.buildComponentList` includes the new case.
- Adds `make fw_patch_exp` + `make cfw_install_exp` Makefile targets
and an `EXP=1` flag for `make setup_machine`, mutually exclusive with
`JB=1` / `DEV=1` / `LESS=1`. `SPOOF_BUILD` env var is threaded
through for later use by the build-version step.
- Adds `--exp` to `scripts/setup_machine.sh` alongside `--jb` /
`--dev` / `--less`. The post-install JB-Finalize block also fires
for EXP (since EXP inherits the JB rootfs deployment).
- Adds `scripts/cfw_install_exp.sh` as the EXP install script
starting point: identical phase set to `cfw_install_jb.sh` (JB-1..JB-5)
with banner/header/footer updated for EXP. Subsequent commits in this
branch add the EXP-only experimental phases on top.
- Updates the variants table in `AGENTS.md` / `README.md` and the
three translated READMEs to include the new `Experimental (EXP)`
row, plus a paragraph describing what EXP adds on top of JB.
Kernel patch
------------
- New `KernelEXPPatcher` orchestrator in
`sources/FirmwarePatcher/Kernel/`, chained after `KernelPatcher` +
`KernelJBPatcher` for the `.exp` variant only. Inherits
`KernelJBPatcherBase` to reuse the JB symbol-table / ADRP-BL index /
branch-encoder infrastructure.
- New `KernelEXPPatchHvVmmRename` patch in
`sources/FirmwarePatcher/Kernel/EXPPatches/`. Part A flips byte 0 of
the NUL-delimited `\\0hv_vmm_present\\0` cstring (the sysctl OID's
`oid_name` value) — `'h'` -> `'X'` — so the kernel resolves
`sysctlbyname("kern.hv_vmm_present")` as ENOENT and
`sysctlbyname("kern.Xv_vmm_present")` to the OID's real int value.
Part B mangles byte 5 of every kernel-internal occurrence of
`kern.hv_vmm_present` so callers keep hitting the renamed OID; two
byte-aligned forms are covered (NUL-delimited cstring + sandbox-profile
name-token with trailing `\\x0f`).
- Patch IDs are `kernelcache_exp.hv_vmm_oid_rename` and
`kernelcache_exp.hv_vmm_internal_caller_mangle`. Idempotent.
- `KernelJBPatcher` is unchanged at the call-site level (no
`patchHvVmmRename` call); its docstring is updated to point at
`KernelEXPPatcher` for the EXP-only patch.
JB and other variants are NOT affected: `cfw_install_jb.sh` and
`cfw_install_dev.sh` are untouched in this commit.
