Subzero, Wasm: Link and run torture tests; bug fixes.

runtime/wasm-runtime.c

 //===- subzero/runtime/wasm-runtime.c - Subzero WASM runtime source -------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the system calls required by the libc that is included
 // in WebAssembly programs.
 //
 //===----------------------------------------------------------------------===//
 
 #include <errno.h>
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
 extern char WASM_MEMORY[];
 
 void env$$abort() {
   fprintf(stderr, "Aborting...\n");
   abort();
 }
 
 void env$$_abort() { env$$abort(); }
 
+void env$$exit(int Status) {
+  exit(Status);
+}
+void env$$_exit(int Status) { env$$exit(Status); }
+
 #define UNIMPLEMENTED(f)                                                       \
   void env$$##f() {                                                            \
     fprintf(stderr, "Unimplemented: " #f "\n");                                \
     abort();                                                                   \
   }
 
 UNIMPLEMENTED(sbrk)
+UNIMPLEMENTED(setjmp)
+UNIMPLEMENTED(longjmp)
+UNIMPLEMENTED(__assert_fail)
+UNIMPLEMENTED(__builtin_malloc)
+UNIMPLEMENTED(__builtin_apply)
+UNIMPLEMENTED(__builtin_apply_args)
 UNIMPLEMENTED(pthread_cleanup_push)
 UNIMPLEMENTED(pthread_cleanup_pop)
 UNIMPLEMENTED(pthread_self)
+UNIMPLEMENTED(abs)
+UNIMPLEMENTED(__floatditf)
+UNIMPLEMENTED(__floatsitf)
+UNIMPLEMENTED(__fixtfdi)
+UNIMPLEMENTED(__fixtfsi)
+UNIMPLEMENTED(__fixsfti)
+UNIMPLEMENTED(__netf2)
+UNIMPLEMENTED(__getf2)
+UNIMPLEMENTED(__eqtf2)
+UNIMPLEMENTED(__lttf2)
+UNIMPLEMENTED(__addtf3)
+UNIMPLEMENTED(__subtf3)
+UNIMPLEMENTED(__divtf3)
+UNIMPLEMENTED(__multf3)
+UNIMPLEMENTED(__multi3)
 UNIMPLEMENTED(__lock)
 UNIMPLEMENTED(__unlock)
 UNIMPLEMENTED(__syscall6)
+UNIMPLEMENTED(__syscall20)
 UNIMPLEMENTED(__syscall140)
+UNIMPLEMENTED(__syscall192)
 
 void *wasmPtr(int Index) {
   // TODO (eholk): get the mask from the WASM file.
   const int MASK = 0x3fffff;
   Index &= MASK;
 
   return WASM_MEMORY + Index;
 }
 
-extern int __szwasm_main(int, char **);
+extern int __szwasm_main(int, const char **);
 
 #define WASM_REF(Type, Index) ((Type *)wasmPtr(Index))
 #define WASM_DEREF(Type, Index) (*WASM_REF(Type, Index))
 
-int main(int argc, char **argv) { return __szwasm_main(argc, argv); }
+int main(int argc, const char **argv) { return __szwasm_main(argc, argv); }
 
 /// sys_write
 int env$$__syscall4(int Which, int VarArgs) {
   int Fd = WASM_DEREF(int, VarArgs + 0 * sizeof(int));
   int Buffer = WASM_DEREF(int, VarArgs + 1 * sizeof(int));
   int Length = WASM_DEREF(int, VarArgs + 2 * sizeof(int));
 
   return write(Fd, WASM_REF(char *, Buffer), Length);
 }
 
+/// sys_open
+int env$$__syscall5(int Which, int VarArgs) {
+  int WasmPath = WASM_DEREF(int, VarArgs);
+  int Flags = WASM_DEREF(int, VarArgs + 4);
+  int Mode = WASM_DEREF(int, VarArgs + 8);
+  const char *Path = WASM_REF(char, WasmPath);
+
+  fprintf(stderr, "sys_open(%s, %d, %d)\n", Path, Flags, Mode);
+
+  return open(Path, Flags, Mode);
+}
+
 /// sys_ioctl
 int env$$__syscall54(int A, int B) {
   int Fd = WASM_DEREF(int, B + 0 * sizeof(int));
   int Op = WASM_DEREF(int, B + 1 * sizeof(int));
   int ArgP = WASM_DEREF(int, B + 2 * sizeof(int));
   // TODO (eholk): implement sys_ioctl
   return -ENOTTY;
 }
 
 int env$$__syscall146(int Which, int VarArgs) {
@@ skipping 18 matching lines @@
     fprintf(stderr, "%d\n", Curr);
 
     if (Curr < 0) {
       return -1;
     }
     Count += Curr;
   }
   fprintf(stderr, "  Count = %d\n", Count);
   return Count;
 }