traps: debugging

diff --git a/ffi/trap.c b/ffi/trap.c
index e0878b2bb0a296989934bf48b9314c355fb0d0df..60b8048cb9c410d0078f0236d9c02d9a1f823277 100644 (file)
--- a/ffi/trap.c
+++ b/ffi/trap.c
@@ -43,6 +43,9 @@ void chandler(int nSignal, siginfo_t *info, void *ctx)
        unsigned int eax = (unsigned int) mctx->gregs[REG_EAX];
        unsigned int ebx = (unsigned int) mctx->gregs[REG_EBX];
        unsigned int esp = (unsigned int) mctx->gregs[REG_ESP];
+       dprintf("trap: type %d, eip 0x%08x, eax 0x%08x, ebx 0x%08x, "
+                       "esp 0x%08x, *esp 0x%08x\n", nSignal, eip,
+                       eax, ebx, esp, *(unsigned int*) esp);
 
        mctx->gregs[REG_EIP] = mateHandler(eip, eax, ebx, esp);
 }