fix(verify): fix non-amd64 JIT trampolines and validate under qemu

2026-08-31 12:34:50 +02:00
parent a5a59d6503
commit 94c4756d47
10 changed files with 77 additions and 43 deletions
@@ -369,11 +369,12 @@ every architecture too: `enterJITChecked` plants sentinels in the registers
 the Go ABI fixes across calls (amd64 `BP`/`R14`, arm64 `R29`/`R28`, riscv64
 `X27`, loong64 `R22`; the latter two keep no hardware frame pointer) and the
 raw return trampoline `leaveJITCheckedRaw` verifies them, restoring the
-saved registers before Go code resumes.  At present only the amd64 JIT path
-is runtime-proven: the non-amd64 trampolines compile and their kernels are
-correct, but the return into Go code still fails under emulation, so `gasm
-verify` gates JIT execution to amd64 kernels on amd64 hosts and runs only
-the toolchain comparisons elsewhere (see docs/DECISIONS.md).
+saved registers before Go code resumes.  riscv64 is validated end to
+end under qemu-user emulation; arm64 shares the same stack convention and
+fix; loong64 stays ground-truth-only until hardware validation (see
+docs/DECISIONS.md).  `gasm verify` runs the JIT checks when the host
+matches the kernel's architecture and the toolchain comparisons
+elsewhere.

 `Load` / `LoadSource` / `LoadAST` parse, assemble and map a `.s` file in one
 step, returning a `Kernel` whose `CallFunc` method marshals the argument block