kernel: add arm architecture support

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Userspace/libc/include/stdio.h

@@ -50,7 +50,7 @@ extern "C"
 #define P_tmpdir "/tmp/"
 
 	typedef long fpos_t;
-	typedef unsigned long size_t;
+	typedef __SIZE_TYPE__ size_t;
 
 	struct _IO_FILE
 	{

Userspace/libc/include/stdlib.h

@@ -46,7 +46,7 @@ extern "C"
 		long rem;
 	} ldiv_t;
 
-	typedef unsigned long size_t;
+	typedef __SIZE_TYPE__ size_t;
 	// typedef __WCHAR_TYPE__ wchar_t;
 
 	long a64l(const char *);

Userspace/libc/include/sys/types.h

@@ -108,7 +108,7 @@ extern "C"
 		char __data;
 	} pthread_barrier_t;
 
-	typedef unsigned long size_t;
+	typedef __SIZE_TYPE__ size_t;
 	typedef long ssize_t;
 
 	typedef long suseconds_t;

Userspace/libc/interpreter/elf.h

@@ -189,6 +189,15 @@ enum RelocationTypes
 	R_AARCH64_RELATIVE = 1027,
 	R_AARCH64_TLS_DTPMOD64 = 1028,
 
+	R_ARM_NONE = 0,
+	R_ARM_COPY = 1024,
+	R_ARM_GLOB_DAT = 1025,
+	R_ARM_JUMP_SLOT = 1026,
+	R_ARM_RELATIVE = 1027,
+	R_ARM_TLS_DTPMOD32 = 1028,
+	R_ARM_TLS_DTPOFF32 = 1029,
+	R_ARM_TLS_TPOFF32 = 1030,
+
 #if defined(__x86_64__)
 	R_NONE = R_X86_64_NONE,
 	R_COPY = R_X86_64_COPY,
@@ -216,6 +225,15 @@ enum RelocationTypes
 	R_DTPMOD64 = R_AARCH64_TLS_DTPMOD64,
 	R_DTPOFF64 = R_AARCH64_NONE,
 	R_TPOFF64 = R_AARCH64_NONE,
+#elif defined(__arm__)
+	R_NONE = R_ARM_NONE,
+	R_COPY = R_ARM_COPY,
+	R_GLOB_DAT = R_ARM_GLOB_DAT,
+	R_JMP_SLOT = R_ARM_JUMP_SLOT,
+	R_RELATIVE = R_ARM_RELATIVE,
+	R_DTPMOD64 = R_ARM_TLS_DTPMOD32,
+	R_DTPOFF64 = R_ARM_TLS_DTPOFF32,
+	R_TPOFF64 = R_ARM_TLS_TPOFF32,
 #endif
 };
 
@@ -1002,7 +1020,7 @@ typedef Elf64_Rela Elf_Rela;
 #define ELF_ST_BIND(info) ELF64_ST_BIND(info)
 #define ELF_ST_TYPE(info) ELF64_ST_TYPE(info)
 #define ELF_ST_INFO(bind, type) ELF64_ST_INFO(bind, type)
-#elif defined(__i386__)
+#elif defined(__i386__) || defined(__arm__)
 typedef Elf32_Addr Elf_Addr;
 typedef Elf32_Half Elf_Half;
 typedef Elf32_Off Elf_Off;

Userspace/libc/interpreter/start.c

@@ -128,6 +128,8 @@ __attribute__((naked, used, no_stack_protector)) void _start()
 		"call _exit\n");	/* Call _exit */
 #elif defined(__i386__)
 #warning "i386 _start not implemented"
+#elif defined(__arm__)
+#warning "arm _start not implemented"
 #elif defined(__aarch64__)
 #warning "aarch64 _start not implemented"
 #else

Userspace/libc/runtime/Scrt1.c

@@ -68,6 +68,8 @@ __attribute__((naked, used, no_stack_protector, section(".text"))) void _start()
 		"call _exit\n");
 #elif defined(__i386__)
 #warning "i386 _start not implemented"
+#elif defined(__arm__)
+#warning "arm _start not implemented"
 #elif defined(__aarch64__)
 #warning "aarch64 _start not implemented"
 #else

Userspace/libc/runtime/crt1.c

@@ -68,6 +68,8 @@ __attribute__((naked, used, no_stack_protector, section(".text"))) void _start()
 		"call _exit\n");
 #elif defined(__i386__)
 #warning "i386 _start not implemented"
+#elif defined(__arm__)
+#warning "arm _start not implemented"
 #elif defined(__aarch64__)
 #warning "aarch64 _start not implemented"
 #else

Userspace/libc/src/softfloat.c

@@ -19,3 +19,176 @@ double __trunctfdf2(long double a)
 {
 	return (double)a;
 }
+
+int __aeabi_dcmple(long double a, long double b)
+{
+	return a <= b;
+}
+
+long long __aeabi_d2lz(double a)
+{
+	return (long long)a;
+}
+
+int __aeabi_dcmplt(long double a, long double b)
+{
+	return a < b;
+}
+
+typedef union
+{
+	double d;
+	struct
+	{
+		__UINT64_TYPE__ mantissa : 52;
+		__UINT64_TYPE__ exponent : 11;
+		__UINT64_TYPE__ sign : 1;
+	} parts;
+} aeabi_double_t;
+
+aeabi_double_t __aeabi_ddiv(aeabi_double_t a, aeabi_double_t b)
+{
+	aeabi_double_t result;
+	result.d = a.d / b.d;
+	return result;
+}
+
+aeabi_double_t __aeabi_dmul(aeabi_double_t a, aeabi_double_t b)
+{
+	aeabi_double_t result;
+	result.d = a.d * b.d;
+	return result;
+}
+
+aeabi_double_t __aeabi_dadd(aeabi_double_t a, aeabi_double_t b)
+{
+	aeabi_double_t result;
+	result.d = a.d + b.d;
+	return result;
+}
+
+int __aeabi_dcmpgt(aeabi_double_t a, aeabi_double_t b)
+{
+	return a.d > b.d;
+}
+
+int __aeabi_dcmpge(aeabi_double_t a, aeabi_double_t b)
+{
+	return a.d >= b.d;
+}
+
+aeabi_double_t __aeabi_dsub(aeabi_double_t a, aeabi_double_t b)
+{
+	aeabi_double_t result;
+	result.d = a.d - b.d;
+	return result;
+}
+
+aeabi_double_t __aeabi_i2d(int a)
+{
+	aeabi_double_t result;
+	result.d = (double)a;
+	return result;
+}
+
+aeabi_double_t __aeabi_l2d(long long a)
+{
+	aeabi_double_t result;
+	result.d = (double)a;
+	return result;
+}
+
+int __aeabi_dcmpeq(aeabi_double_t a, aeabi_double_t b)
+{
+	return a.d == b.d;
+}
+
+int __aeabi_d2iz(aeabi_double_t a)
+{
+	return (int)a.d;
+}
+
+struct ldivmod_result
+{
+	long quot;
+	long rem;
+};
+
+struct ldivmod_result __aeabi_ldivmod(long numerator, long denominator)
+{
+	struct ldivmod_result result;
+	result.quot = numerator / denominator;
+	result.rem = numerator % denominator;
+	return result;
+}
+
+signed __aeabi_idiv(signed numerator, signed denominator)
+{
+	return numerator / denominator;
+}
+
+signed __aeabi_idivmod(signed numerator, signed denominator)
+{
+	signed quotient = numerator / denominator;
+	signed remainder = numerator % denominator;
+	return (quotient << 16) | remainder;
+}
+
+unsigned __aeabi_uidiv(unsigned numerator, unsigned denominator)
+{
+	return numerator / denominator;
+}
+
+unsigned __aeabi_uidivmod(unsigned numerator, unsigned denominator)
+{
+	unsigned quotient = numerator / denominator;
+	unsigned remainder = numerator % denominator;
+	return (quotient << 16) | remainder;
+}
+
+__UINT64_TYPE__ __udivmoddi4(__UINT64_TYPE__ numerator, __UINT64_TYPE__ denominator, __UINT64_TYPE__ *remainder)
+{
+	__UINT64_TYPE__ quotient = 0;
+	__UINT64_TYPE__ bit = 1;
+
+	if (denominator == 0)
+	{
+		*remainder = numerator;
+		return ~0ULL;
+	}
+
+	while (denominator < numerator && (denominator & (1ULL << 63)) == 0)
+	{
+		denominator <<= 1;
+		bit <<= 1;
+	}
+
+	while (bit)
+	{
+		if (numerator >= denominator)
+		{
+			numerator -= denominator;
+			quotient |= bit;
+		}
+		denominator >>= 1;
+		bit >>= 1;
+	}
+
+	if (remainder)
+		*remainder = numerator;
+
+	return quotient;
+}
+
+struct udivmod_result
+{
+	__UINT64_TYPE__ quot;
+	__UINT64_TYPE__ rem;
+};
+
+struct udivmod_result __aeabi_uldivmod(__UINT64_TYPE__ numerator, __UINT64_TYPE__ denominator)
+{
+	struct udivmod_result result;
+	result.quot = __udivmoddi4(numerator, denominator, &result.rem);
+	return result;
+}