Exclude strace from MODE=tiny builds

This change gets o/tinylinux/examples/hello2.com back down to 8kb in size which had been unintentionally bloated to 40kb in recent months See #965
jart · Nov 29, 2023 · 2b960bb · 2b960bb
1 parent b7e1dc8
commit 2b960bb
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Showing 18 changed files with 46 additions and 33 deletions.
diff --git a/build/config.mk b/build/config.mk
@@ -228,6 +228,27 @@ PYFLAGS +=				\
 	-O2				\
 	-B
 endif
+ifeq ($(MODE), x86_64-tiny)
+CONFIG_CPPFLAGS +=			\
+	-DTINY				\
+	-DNDEBUG			\
+	-DTRUSTWORTHY
+CONFIG_CCFLAGS +=			\
+	-Os				\
+	-fno-align-functions		\
+	-fno-align-jumps		\
+	-fno-align-labels		\
+	-fno-align-loops		\
+	-fschedule-insns2		\
+	-momit-leaf-frame-pointer	\
+	-foptimize-sibling-calls	\
+	-DDWARFLESS
+TARGET_ARCH ?=				\
+	-msse3
+PYFLAGS +=				\
+	-O2				\
+	-B
+endif
 ifeq ($(MODE), aarch64-tiny)
 # TODO(jart): -mcmodel=tiny
 CONFIG_CPPFLAGS +=			\

diff --git a/libc/calls/fcntl.c b/libc/calls/fcntl.c
@@ -136,7 +136,7 @@ int fcntl(int fd, int cmd, ...) {
     rc = ebadf();
   }
 
-#ifdef SYSDEBUG
+#if SYSDEBUG
   if (rc != -1 && cmd == F_GETFL) {
     STRACE("fcntl(%d, F_GETFL) → %s", fd, DescribeOpenFlags(rc));
   } else if (cmd == F_SETFL) {

diff --git a/libc/calls/prctl.c b/libc/calls/prctl.c
@@ -53,7 +53,7 @@ int prctl(int operation, ...) {
     rc = enosys();
   }
 
-#ifdef SYSDEBUG
+#if SYSDEBUG
   if (operation == PR_CAPBSET_READ || operation == PR_CAPBSET_DROP) {
     STRACE("prctl(%s, %s) → %d% m", DescribePrctlOperation(operation),
            DescribeCapability(a), rc);

diff --git a/libc/calls/sys_ptrace.c b/libc/calls/sys_ptrace.c
@@ -46,7 +46,7 @@ int sys_ptrace(int op, ...) {
   data = va_arg(va, long *);
   va_end(va);
   rc = __sys_ptrace(op, pid, addr, data);
-#ifdef SYSDEBUG
+#if SYSDEBUG
   if (UNLIKELY(__strace > 0) && strace_enabled(0) > 0) {
     if (rc != -1 && IsPeek(op) && data) {
       STRACE("sys_ptrace(%s, %d, %p, [%p]) → %p% m", DescribePtrace(op), pid,

diff --git a/libc/intrin/strace.internal.h b/libc/intrin/strace.internal.h
@@ -2,7 +2,7 @@
 #define COSMOPOLITAN_LIBC_CALLS_STRACE_INTERNAL_H_
 
 #ifndef SYSDEBUG
-#define SYSDEBUG 1
+#define SYSDEBUG 0
 #endif
 
 #define _NTTRACE    0 /* not configurable w/ flag yet */

diff --git a/libc/proc/fork-nt.c b/libc/proc/fork-nt.c
@@ -61,7 +61,7 @@
 void WipeKeystrokes(void);
 
 static textwindows wontreturn void AbortFork(const char *func) {
-#ifdef SYSDEBUG
+#if SYSDEBUG
   kprintf("fork() %s() failed with win32 error %d\n", func, GetLastError());
 #endif
   TerminateThisProcess(SIGSTKFLT);
@@ -104,7 +104,7 @@ static dontinline textwindows bool WriteAll(int64_t h, void *buf, size_t n) {
 #ifndef NDEBUG
   if (ok) ok = ForkIo2(h, &n, sizeof(n), WriteFile, "WriteFile", false);
 #endif
-#ifdef SYSDEBUG
+#if SYSDEBUG
   if (!ok) {
     kprintf("failed to write %zu bytes to forked child: %d\n", n,
             GetLastError());
@@ -194,7 +194,7 @@ textwindows void WinMainForked(void) {
   if (!varlen || varlen >= ARRAYLEN(fvar)) return;
   NTTRACE("WinMainForked()");
   SetEnvironmentVariable(u"_FORK", NULL);
-#ifdef SYSDEBUG
+#if SYSDEBUG
   int64_t oncrash = AddVectoredExceptionHandler(1, (void *)OnForkCrash);
 #endif
   ParseInt(fvar, &reader);
@@ -271,7 +271,7 @@ textwindows void WinMainForked(void) {
   fds->p[2].handle = GetStdHandle(kNtStdErrorHandle);
 
   // restore the crash reporting stuff
-#ifdef SYSDEBUG
+#if SYSDEBUG
   RemoveVectoredExceptionHandler(oncrash);
 #endif
   if (_weaken(__sig_init)) {
@@ -314,7 +314,7 @@ textwindows int sys_fork_nt(uint32_t dwCreationFlags) {
       startinfo.hStdOutput = g_fds.p[1].handle;
       startinfo.hStdError = g_fds.p[2].handle;
       args = __argv;
-#ifdef SYSDEBUG
+#if SYSDEBUG
       // If --strace was passed to this program, then propagate it the
       // forked process since the flag was removed by __intercept_flag
       if (strace_enabled(0) > 0) {

diff --git a/libc/proc/vfork.S b/libc/proc/vfork.S
@@ -55,7 +55,7 @@ vfork:
 #if !IsTiny()
 	push	%rbp
 	mov	%rsp,%rbp
-#ifdef SYSDEBUG
+#if SYSDEBUG
 	ezlea	.Llog,di
 	call	__stracef
 #endif
@@ -93,7 +93,7 @@ vfork:
 	b	fork			// which doesn't support vfork()
 1:
 
-#ifdef SYSDEBUG
+#if SYSDEBUG
 	stp	x29,x30,[sp,-16]!
 	adrp	x0,.Llog
 	add	x0,x0,:lo12:.Llog
@@ -130,7 +130,7 @@ vfork:
 #endif
 	.endfn	vfork,globl
 
-#ifdef SYSDEBUG
+#if SYSDEBUG
 	.rodata.str1.1
 .Llog:	.ascii	STRACE_PROLOGUE
 	.asciz	"vfork()\n"

diff --git a/libc/runtime/cosmo.S b/libc/runtime/cosmo.S
@@ -40,7 +40,7 @@ cosmo:	push	%rbp
 	mov	%rdx,%r14
 	mov	%rcx,%r15
 
-#ifdef SYSDEBUG
+#if SYSDEBUG
 	call	__strace_init
 	mov	%eax,%r12d
 #endif /* SYSDEBUG */

diff --git a/libc/runtime/cosmo2.c b/libc/runtime/cosmo2.c
@@ -163,7 +163,7 @@ wontreturn textstartup void cosmo(long *sp, struct Syslib *m1) {
 
   _init();
   // initialize program
-#ifdef SYSDEBUG
+#if SYSDEBUG
   argc = __strace_init(argc, argv, envp, auxv);
 #endif
   for (init_f **fp = __init_array_end; fp-- > __init_array_start;) {

diff --git a/libc/runtime/memtrack.internal.h b/libc/runtime/memtrack.internal.h
@@ -57,7 +57,7 @@ int __untrack_memory(struct MemoryIntervals *, int, int,
                      void (*)(struct MemoryIntervals *, int, int));
 void __release_memory_nt(struct MemoryIntervals *, int, int);
 int __untrack_memories(void *, size_t);
-size_t __get_memtrack_size(struct MemoryIntervals *);
+size_t __get_memtrack_size(struct MemoryIntervals *) nosideeffect;
 
 #ifdef __x86_64__
 /*

diff --git a/libc/runtime/mmap.c b/libc/runtime/mmap.c
@@ -466,7 +466,7 @@ inline void *__mmap_unlocked(void *addr, size_t size, int prot, int flags,
  */
 void *mmap(void *addr, size_t size, int prot, int flags, int fd, int64_t off) {
   void *res;
-#ifdef SYSDEBUG
+#if SYSDEBUG
   size_t toto = 0;
 #if _KERNTRACE || _NTTRACE
   if (IsWindows()) {
@@ -487,9 +487,11 @@ void *mmap(void *addr, size_t size, int prot, int flags, int fd, int64_t off) {
   toto = __strace > 0 ? __get_memtrack_size(&_mmi) : 0;
 #endif
   __mmi_unlock();
+#if SYSDEBUG
   STRACE("mmap(%p, %'zu, %s, %s, %d, %'ld) → %p% m (%'zu bytes total)", addr,
          size, DescribeProtFlags(prot), DescribeMapFlags(flags), fd, off, res,
          toto);
+#endif
   return res;
 }
 

diff --git a/libc/runtime/munmap.c b/libc/runtime/munmap.c
@@ -153,9 +153,7 @@ int munmap(void *p, size_t n) {
   int rc;
   __mmi_lock();
   rc = __munmap_unlocked(p, n);
-#if SYSDEBUG
   size_t toto = __strace > 0 ? __get_memtrack_size(&_mmi) : 0;
-#endif
   __mmi_unlock();
   STRACE("munmap(%.12p, %'zu) → %d% m (%'zu bytes total)", p, n, rc, toto);
   return rc;

diff --git a/libc/runtime/winmain.greg.c b/libc/runtime/winmain.greg.c
@@ -19,7 +19,6 @@
 #include "libc/assert.h"
 #include "libc/calls/internal.h"
 #include "libc/calls/syscall_support-nt.internal.h"
-#include "libc/serialize.h"
 #include "libc/intrin/nomultics.internal.h"
 #include "libc/intrin/weaken.h"
 #include "libc/limits.h"
@@ -41,6 +40,7 @@
 #include "libc/runtime/runtime.h"
 #include "libc/runtime/stack.h"
 #include "libc/runtime/winargs.internal.h"
+#include "libc/serialize.h"
 #include "libc/sock/internal.h"
 #include "libc/str/str.h"
 #include "libc/sysv/consts/prot.h"
@@ -271,7 +271,7 @@ abi int64_t WinMain(int64_t hInstance, int64_t hPrevInstance,
   __umask = 077;
   __pid = __imp_GetCurrentProcessId();
   cmdline = MyCommandLine();
-#ifdef SYSDEBUG
+#if SYSDEBUG
   // sloppy flag-only check for early initialization
   if (StrStr(cmdline, u"--strace")) ++__strace;
 #endif

diff --git a/libc/sock/getsockopt.c b/libc/sock/getsockopt.c
@@ -64,7 +64,7 @@ int getsockopt(int fd, int level, int optname, void *out_opt_optval,
     rc = enotsock();
   }
 
-#ifdef SYSDEBUG
+#if SYSDEBUG
   if (out_opt_optval && out_optlen && rc != -1) {
     STRACE("getsockopt(%d, %s, %s, [%#.*hhs], [%d]) → %d% lm", fd,
            DescribeSockLevel(level), DescribeSockOptname(level, optname),

diff --git a/libc/sock/pselect.c b/libc/sock/pselect.c
@@ -67,14 +67,12 @@ int pselect(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
     size_t n;
   } ss;
 
-#ifdef SYSDEBUG
   fd_set old_readfds;
   fd_set *old_readfds_ptr = 0;
   fd_set old_writefds;
   fd_set *old_writefds_ptr = 0;
   fd_set old_exceptfds;
   fd_set *old_exceptfds_ptr = 0;
-#endif
 
   BEGIN_CANCELATION_POINT;
   if (nfds < 0) {
@@ -87,7 +85,6 @@ int pselect(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
               (sigmask && !__asan_is_valid(sigmask, sizeof(*sigmask))))) {
     rc = efault();
   } else {
-#ifdef SYSDEBUG
     if (readfds) {
       old_readfds = *readfds;
       old_readfds_ptr = &old_readfds;
@@ -100,7 +97,6 @@ int pselect(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
       old_exceptfds = *exceptfds;
       old_exceptfds_ptr = &old_exceptfds;
     }
-#endif
     if (IsLinux()) {
       if (timeout) {
         ts = *timeout;

diff --git a/libc/sock/select.c b/libc/sock/select.c
@@ -48,7 +48,6 @@ int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
            struct timeval *timeout) {
 
   int rc;
-#ifdef SYSDEBUG
   fd_set old_readfds;
   fd_set *old_readfds_ptr = 0;
   fd_set old_writefds;
@@ -57,7 +56,6 @@ int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
   fd_set *old_exceptfds_ptr = 0;
   struct timeval old_timeout;
   struct timeval *old_timeout_ptr = 0;
-#endif
 
   POLLTRACE("select(%d, %p, %p, %p, %s) → ...", nfds, readfds, writefds,
             exceptfds, DescribeTimeval(0, timeout));
@@ -72,7 +70,6 @@ int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
               (timeout && !__asan_is_valid(timeout, sizeof(*timeout))))) {
     rc = efault();
   } else {
-#ifdef SYSDEBUG
     if (readfds) {
       old_readfds = *readfds;
       old_readfds_ptr = &old_readfds;
@@ -89,7 +86,6 @@ int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
       old_timeout = *timeout;
       old_timeout_ptr = &old_timeout;
     }
-#endif
     if (!IsWindows()) {
 #ifdef __aarch64__
       struct timespec ts, *tsp;

diff --git a/libc/sock/setsockopt.c b/libc/sock/setsockopt.c
@@ -86,7 +86,7 @@ int setsockopt(int fd, int level, int optname, const void *optval,
     rc = enotsock();
   }
 
-#ifdef SYSDEBUG
+#if SYSDEBUG
   if (!(rc == -1 && errno == EFAULT)) {
     STRACE("setsockopt(%d, %s, %s, %#.*hhs, %'u) → %d% lm", fd,
            DescribeSockLevel(level), DescribeSockOptname(level, optname),

diff --git a/libc/sysv/systemfive.S b/libc/sysv/systemfive.S
@@ -379,12 +379,12 @@ _init_systemfive_magnums:
 	jnz	3b
 	xchg	%rbx,%rax
 	stosq
-#ifdef SYSDEBUG
+#if SYSDEBUG
 	inc	%r8d
 #endif
 	jmp	2b
 5:	nop
-#ifdef SYSDEBUG
+#if SYSDEBUG
 	push	%rdi
 	push	%rsi
 	push	%r8
@@ -449,7 +449,7 @@ _init_systemfive_done:
 	nop
 	.init.end 300,_init_systemfive,globl,hidden
 
-#ifdef SYSDEBUG
+#if SYSDEBUG
 	.rodata.str1.1
 .Llog:	.ascii	STRACE_PROLOGUE
 	.ascii	"bell system five system call support"