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
@@ -20,8 +20,11 @@ TEXT ·enterJIT(SB), NOSPLIT, $0-16
 	MOVD R3, savedSP(SB)       // save Go stack pointer
 	MOVD stack+8(FP), R3       // load prepared stack pointer
 	MOVD 0(R3), R30            // load leaveJIT address into LR
-	ADD  $8, R3, R3            // advance past return address
-	MOVD R3, RSP               // switch to prepared stack
+	MOVD R3, RSP               // switch to the prepared stack: SP stays on
+	                           // the leave slot, so the kernel reads its
+	                           // first argument at SP+8 per the frame
+	                           // convention (amd64 lays the stack out the
+	                           // same way)
 	JMP  (R0)                  // branch to JIT function

 // func leaveJIT()