all c++ userspace except for system calls and lwip

9bbaf1df · Nickolai Zeldovich · bfea5822 · 9bbaf1df · 9bbaf1df · 9bbaf1df
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ COMFLAGS := -fno-pic -static -fno-builtin -fno-strict-aliasing -O2 -Wall \
 	    -DHW_$(HW) -include param.h -include compiler.h
 COMFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 CFLAGS   := $(COMFLAGS) -std=c99
-CXXFLAGS := $(COMFLAGS) -std=c++0x
+CXXFLAGS := $(COMFLAGS) -std=c++0x -Wno-sign-compare
 ASFLAGS = -m64 -gdwarf-2 -MD
 LDFLAGS += -m elf_x86_64

--- a/cat.cc
+++ b/cat.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
-}
 char buf[512];

--- a/dirbench.cc
+++ b/dirbench.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "mtrace.h"
 #include "amd64.h"
 #include "fcntl.h"
-}
 enum { nthread = 2 };
 enum { nloop = 100 };

--- a/echo.cc
+++ b/echo.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
-}
 int
 main(int argc, char *argv[])

--- a/forkexecbench.cc
+++ b/forkexecbench.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "mtrace.h"
 #include "amd64.h"
-}
 #define NITERS 16

--- a/forkexectree.cc
+++ b/forkexectree.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "mtrace.h"
-}
 #define NCHILD 2
 #define NDEPTH 7

--- a/forktree.cc
+++ b/forktree.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "mtrace.h"
-}
 #define NCHILD 2
 #define NDEPTH 5

--- a/httpd.cc
+++ b/httpd.cc
-extern "C" {
 #include "types.h"
 #include "user.h"
 #include "lib.h"
 #include "unet.h"
 #include "fcntl.h"
 #include "stat.h"
-}
 #define VERSION "0.1"
 #define HTTP_VERSION "1.0"

--- a/init.cc
+++ b/init.cc
 // init: The initial user-level program
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "fcntl.h"
 #include "lib.h"
-}
 static const char *sh_argv[] = { "sh", 0 };
 static const char *app_argv[][MAXARG] = {

--- a/lockstat.cc
+++ b/lockstat.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "fcntl.h"
 #include "amd64.h"
 #include "lockstat.h"
-}
 static void
 xwrite(int fd, char c)

--- a/ls.cc
+++ b/ls.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "fs.h"
-}
 const char*
 fmtname(const char *path)

--- a/mapbench.cc
+++ b/mapbench.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "mtrace.h"
 #include "amd64.h"
 #include "uspinlock.h"
-}
 static struct uspinlock l;
 static volatile int tcount;

--- a/maptest.c
+++ b/maptest.c
@@ -55,7 +55,7 @@ main(void)
  }
  sbrk(4096);
-  forkt(sbrk(0), thr, 0);
+  forkt(sbrk(0), (void*) thr, 0);
  acquire(&l);
  state = 1;

--- a/printf.c
+++ b/printf.c
@@ -37,7 +37,7 @@ void
 vprintfmt(void (*putch) (void*, char), void *putarg,
          const char *fmt, va_list ap)
 {
-  char *s;
+  const char *s;
  int c, i, state;
  state = 0;
@@ -58,7 +58,7 @@ vprintfmt(void (*putch) (void*, char), void *putarg,
        state = 'l';
        continue;
      } else if(c == 's'){
-        s = (char*) va_arg(ap, char*);
+        s = (const char*) va_arg(ap, const char*);
        if(s == 0)
          s = "(null)";
        while(*s != 0){
@@ -119,7 +119,7 @@ struct bufstate {
 static void
 writebuf(void *arg, char c)
 {
-  struct bufstate *bs = arg;
+  struct bufstate *bs = (bufstate*) arg;
  if (bs->p < bs->e) {
    bs->p[0] = c;
    bs->p++;

--- a/sh.cc
+++ b/sh.cc
 // Shell.
-extern "C" {
 #include "types.h"
 #include "user.h"
 #include "fcntl.h"
-}
 // Parsed command representation
 #define EXEC  1

--- a/sleep.cc
+++ b/sleep.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "fcntl.h"
 #include "amd64.h"
-}
 int
 main(int ac, char *av[])

--- a/telnetd.cc
+++ b/telnetd.cc
-extern "C" {
 #include "types.h"
 #include "user.h"
 #include "unet.h"
-}
 int
 main(void)

--- a/thrtest.cc
+++ b/thrtest.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "mtrace.h"
 #include "amd64.h"
 #include "uspinlock.h"
-}
 static struct uspinlock l;
 static volatile int tcount;

--- a/time.cc
+++ b/time.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "fcntl.h"
 #include "amd64.h"
-}
 int
 main(int ac, const char *av[])

--- a/ulib.c
+++ b/ulib.c
@@ -124,8 +124,8 @@ memmove(void *vdst, const void *vsrc, int n)
  const char *src;
  char *dst;
-  dst = vdst;
+  dst = (char*) vdst;
-  src = vsrc;
+  src = (const char*) vsrc;
  while(n-- > 0)
    *dst++ = *src++;
  return vdst;

--- a/umalloc.c
+++ b/umalloc.c
--- a/unet.h
+++ b/unet.h
 #ifdef LWIP
+extern "C" {
 #include "lwip/sockets.h"
 // system calls
@@ -7,6 +8,7 @@ extern int bind(int sockfd, const struct sockaddr *addr,
                socklen_t addrlen);
 extern int listen(int sockfd, int backlog);
 extern int accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
+}
 static inline const char *
 ipaddr(struct sockaddr_in *sin)

--- a/user.h
+++ b/user.h
 struct stat;
 // system calls
+extern "C" {
 int fork(int);
 int exit(void) __attribute__((noreturn));
 int wait(void);
@@ -25,6 +26,7 @@ int uptime(void);
 int map(void *addr, int len);
 int unmap(void *addr, int len);
 void halt(void);
+}
 // ulib.c
 int stat(char*, struct stat*);
@@ -42,7 +44,9 @@ void free(void*);
 int atoi(const char*);
 // uthread.S
+extern "C" {
 int forkt(void *sp, void *pc, void *arg);
+}
 // printf.c
 void printf(int, const char*, ...);

--- a/usertests.cc
+++ b/usertests.cc
-extern "C" {
 #include "types.h"
 #include "stat.h"
 #include "user.h"
@@ -6,7 +5,6 @@ extern "C" {
 #include "fcntl.h"
 #include "syscall.h"
 #include "traps.h"
-}
 char buf[2048];
 char name[3];