procuding a (non-working) executable for tcc

05/stdc_common.h

@@ -88,6 +88,111 @@ static unsigned char __syscall_data[] = {
 	(((unsigned long (*)(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long))__syscall_data)\
 		(no, arg1, arg2, arg3, arg4, arg5, arg6))
 
+// we need to define ucontext_t
+# define __ctx(fld) fld
+typedef long long int greg_t;
+#define __NGREG	23
+typedef greg_t gregset_t[__NGREG];
+#define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
+typedef struct
+{
+  unsigned long int __val[_SIGSET_NWORDS];
+} __sigset_t, sigset_t;
+typedef struct
+{
+	void *ss_sp;
+	int ss_flags;
+	size_t ss_size;
+} stack_t;
+enum
+{
+  REG_R8 = 0,
+# define REG_R8		REG_R8
+  REG_R9,
+# define REG_R9		REG_R9
+  REG_R10,
+# define REG_R10	REG_R10
+  REG_R11,
+# define REG_R11	REG_R11
+  REG_R12,
+# define REG_R12	REG_R12
+  REG_R13,
+# define REG_R13	REG_R13
+  REG_R14,
+# define REG_R14	REG_R14
+  REG_R15,
+# define REG_R15	REG_R15
+  REG_RDI,
+# define REG_RDI	REG_RDI
+  REG_RSI,
+# define REG_RSI	REG_RSI
+  REG_RBP,
+# define REG_RBP	REG_RBP
+  REG_RBX,
+# define REG_RBX	REG_RBX
+  REG_RDX,
+# define REG_RDX	REG_RDX
+  REG_RAX,
+# define REG_RAX	REG_RAX
+  REG_RCX,
+# define REG_RCX	REG_RCX
+  REG_RSP,
+# define REG_RSP	REG_RSP
+  REG_RIP,
+# define REG_RIP	REG_RIP
+  REG_EFL,
+# define REG_EFL	REG_EFL
+  REG_CSGSFS,		/* Actually short cs, gs, fs, __pad0.  */
+# define REG_CSGSFS	REG_CSGSFS
+  REG_ERR,
+# define REG_ERR	REG_ERR
+  REG_TRAPNO,
+# define REG_TRAPNO	REG_TRAPNO
+  REG_OLDMASK,
+# define REG_OLDMASK	REG_OLDMASK
+  REG_CR2
+# define REG_CR2	REG_CR2
+};
+struct _libc_fpxreg
+{
+  unsigned short int __ctx(significand)[4];
+  unsigned short int __ctx(exponent);
+  unsigned short int __glibc_reserved1[3];
+};
+struct _libc_xmmreg
+{
+	uint32_t	__ctx(element)[4];
+};
+struct _libc_fpstate
+{
+	uint16_t		__ctx(cwd);
+	uint16_t		__ctx(swd);
+	uint16_t		__ctx(ftw);
+	uint16_t		__ctx(fop);
+	uint64_t		__ctx(rip);
+	uint64_t		__ctx(rdp);
+	uint32_t		__ctx(mxcsr);
+	uint32_t		__ctx(mxcr_mask);
+	struct _libc_fpxreg	_st[8];
+	struct _libc_xmmreg	_xmm[16];
+	uint32_t		__glibc_reserved1[24];
+};
+typedef struct _libc_fpstate *fpregset_t;
+typedef struct {
+	gregset_t __ctx(gregs);
+	fpregset_t __ctx(fpregs);
+	unsigned long long __reserved1 [8];
+} mcontext_t;
+typedef struct ucontext_t {
+	unsigned long int __ctx(uc_flags);
+	struct ucontext_t *uc_link;
+	stack_t uc_stack;
+	mcontext_t uc_mcontext;
+	sigset_t uc_sigmask;
+	struct _libc_fpstate __fpregs_mem;
+	unsigned long long int __ssp[4];
+} ucontext_t;
+
 long read(int fd, void *buf, size_t count) {
 	return __syscall(0, fd, buf, count, 0, 0, 0);
 }
@@ -116,6 +221,32 @@ int execve(const char *pathname, char *const argv[], char *const envp[]) {
 	return __syscall(59, pathname, argv, envp, 0, 0, 0);
 }
 
+int gettimeofday(struct timeval *tv, struct timezone *tz) {
+	return __syscall(96, tv, tz, 0, 0, 0, 0);
+}
+
+typedef long time_t;
+
+struct timespec {
+	time_t tv_sec;
+	long tv_nsec;
+};
+
+struct timeval {
+	time_t tv_sec;
+	long tv_usec;
+};
+
+struct timezone {
+	int tz_minuteswest;
+	int tz_dsttime;
+};
+
+char *getcwd(char *buf, size_t size) {
+	long n = __syscall(79, buf, size, 0, 0, 0, 0);
+	if (n < 0) return NULL;
+	return buf;
+}
 
 #define _WEXITSTATUS(status)   (((status) & 0xff00) >> 8)
 #define _WIFEXITED(status) (__WTERMSIG(status) == 0)
@@ -132,16 +263,11 @@ int wait4(int pid, int *status, int options, struct rusage *rusage) {
 #define SIGINT 2
 #define SIGSEGV 11
 #define SIGTERM 15
+#define SIGBUS 7
 void abort(void) {
 	kill(getpid(), SIGABRT);
 }
 
-typedef long time_t;
-
-struct timespec {
-	time_t tv_sec;
-	long tv_nsec;
-};
 
 #define CLOCK_REALTIME 0
 #define CLOCK_MONOTONIC 1
@@ -183,6 +309,29 @@ int __assert_failed(const char *file, int line, const char *expr) {
 #define assert(x) (void)((x) || __assert_failed(__FILE__, __LINE__, #x))
 #endif
 
+
+int _clamp_long_to_int(long x) {
+	if (x < INT_MIN) return INT_MIN;
+	if (x > INT_MAX) return INT_MAX;
+	return x;
+}
+
+short _clamp_long_to_short(long x) {
+	if (x < SHRT_MIN) return SHRT_MIN;
+	if (x > SHRT_MAX) return SHRT_MAX;
+	return x;
+}
+
+unsigned _clamp_ulong_to_uint(unsigned long x) {
+	if (x > UINT_MAX) return UINT_MAX;
+	return x;
+}
+
+unsigned short _clamp_ulong_to_ushort(unsigned long x) {
+	if (x > USHRT_MAX) return USHRT_MAX;
+	return x;
+}
+
 #define EIO 5
 #define EDOM 33
 #define ERANGE 34
@@ -201,6 +350,10 @@ int munmap(void *addr, size_t length) {
 	return __syscall(11, addr, length, 0, 0, 0, 0);
 }
 
+int mprotect(void *addr, size_t len, int prot) {
+	return __syscall(10, addr, len, prot, 0, 0, 0);
+}
+
 #define MREMAP_MAYMOVE 1
 void *_mremap(void *addr, size_t old_size, size_t new_size, int flags) {
 	return __syscall(25, addr, old_size, new_size, flags, 0, 0);
@@ -455,6 +608,14 @@ double strtod(const char *nptr, char **endptr) {
 	return sum * sign;
 }
 
+float strtof(const char *nptr, char **endptr) {
+	return strtod(nptr, endptr);
+}
+
+long double strtold(const char *nptr, char **endptr) {
+	return strtod(nptr, endptr);
+}
+
 char *strerror(int errnum) {
 	switch (errnum) {
 	case ERANGE: return "Range error";