[libj6] Create libj6

Pull syscall code out of libc and create new libj6. This should
eventually become a vDSO, but for now it can still be a static lib.
Also renames all the _syscall_* symbol names to j6_*

modules.yaml

@@ -120,12 +120,22 @@ modules:
         source:
             - src/libraries/cpu/cpu.cpp
 
+    j6:
+      kind: lib
+      output: libj6.a
+      includes:
+        - src/libraries/j6/include
+      target: user
+      source:
+        - src/libraries/j6/syscalls.s
 
     libc:
         kind: lib
         output: libc.a
         includes:
           - src/libraries/libc/include
+        deps:
+            - j6
         target: user
         defines:
             - DISABLE_SSE
@@ -144,7 +154,6 @@ modules:
             - src/libraries/libc/arch/x86_64/_Exit.s
             - src/libraries/libc/arch/x86_64/crt0.s
             - src/libraries/libc/arch/x86_64/init_libc.c
-            - src/libraries/libc/arch/x86_64/syscalls.s
             - src/libraries/libc/ctype/isalnum.c
             - src/libraries/libc/ctype/isalpha.c
             - src/libraries/libc/ctype/isblank.c

src/drivers/fb/main.cpp

@@ -5,10 +5,9 @@
 #include "j6/init.h"
 #include "j6/errors.h"
 #include "j6/signals.h"
+#include "j6/syscalls.h"
 #include "j6/types.h"
 
-#include <j6libc/syscalls.h>
-
 #include "font.h"
 #include "screen.h"
 #include "scrollback.h"
@@ -32,7 +31,7 @@ struct entry
 int
 main(int argc, const char **argv)
 {
-	_syscall_system_log("fb driver starting");
+	j6_system_log("fb driver starting");
 
 	size_t initc = 0;
 	j6_init_value *initv = nullptr;
@@ -47,7 +46,7 @@ main(int argc, const char **argv)
 	}
 
 	if (!fb || fb->addr == nullptr) {
-		_syscall_system_log("fb driver didn't find a framebuffer, exiting");
+		j6_system_log("fb driver didn't find a framebuffer, exiting");
 		return 1;
 	}
 
@@ -76,7 +75,7 @@ main(int argc, const char **argv)
 	char message_buffer[256];
 	while (true) {
 		size_t size = sizeof(message_buffer);
-		_syscall_system_get_log(__handle_sys, message_buffer, &size);
+		j6_system_get_log(__handle_sys, message_buffer, &size);
 		if (size != 0) {
 			entry *e = reinterpret_cast<entry*>(&message_buffer);
 
@@ -99,7 +98,7 @@ main(int argc, const char **argv)
 	}
 
 
-	_syscall_system_log("fb driver done, exiting");
+	j6_system_log("fb driver done, exiting");
 	return 0;
 }
 

src/drivers/nulldrv/main.cpp

@@ -4,8 +4,7 @@
 #include "j6/types.h"
 #include "j6/errors.h"
 #include "j6/signals.h"
-
-#include <j6libc/syscalls.h>
+#include "j6/syscalls.h"
 
 #include "io.h"
 #include "serial.h"
@@ -21,33 +20,33 @@ extern "C" {
 void
 thread_proc()
 {
-	_syscall_system_log("sub thread starting");
+	j6_system_log("sub thread starting");
 
 	char buffer[512];
 	size_t len = sizeof(buffer);
 	j6_tag_t tag = 0;
-	j6_status_t result = _syscall_endpoint_receive(endp, &tag, &len, (void*)buffer);
+	j6_status_t result = j6_endpoint_receive(endp, &tag, &len, (void*)buffer);
 	if (result != j6_status_ok)
-		_syscall_thread_exit(result);
+		j6_thread_exit(result);
 
-	_syscall_system_log("sub thread received message");
+	j6_system_log("sub thread received message");
 
 	for (int i = 0; i < len; ++i)
 		if (buffer[i] >= 'A' && buffer[i] <= 'Z')
 			buffer[i] += 0x20;
 
 	tag++;
-	result = _syscall_endpoint_send(endp, tag, len, (void*)buffer);
+	result = j6_endpoint_send(endp, tag, len, (void*)buffer);
 	if (result != j6_status_ok)
-		_syscall_thread_exit(result);
+		j6_thread_exit(result);
 
-	_syscall_system_log("sub thread sent message");
+	j6_system_log("sub thread sent message");
 
 	for (int i = 1; i < 5; ++i)
-		_syscall_thread_sleep(i*10);
+		j6_thread_sleep(i*10);
 
-	_syscall_system_log("sub thread exiting");
-	_syscall_thread_exit(0);
+	j6_system_log("sub thread exiting");
+	j6_thread_exit(0);
 }
 
 int
@@ -56,10 +55,10 @@ main(int argc, const char **argv)
 	j6_handle_t child = j6_handle_invalid;
 	j6_signal_t out = 0;
 
-	_syscall_system_log("main thread starting");
+	j6_system_log("main thread starting");
 
 	for (int i = 0; i < argc; ++i)
-		_syscall_system_log(argv[i]);
+		j6_system_log(argv[i]);
 
 	void *base = malloc(0x1000);
 	if (!base)
@@ -69,48 +68,48 @@ main(int argc, const char **argv)
 	for (int i = 0; i < 3; ++i)
 		vma_ptr[i*100] = uint64_t(i);
 
-	_syscall_system_log("main thread wrote to memory area");
+	j6_system_log("main thread wrote to memory area");
 
-	j6_status_t result = _syscall_endpoint_create(&endp);
+	j6_status_t result = j6_endpoint_create(&endp);
 	if (result != j6_status_ok)
 		return result;
 
-	_syscall_system_log("main thread created endpoint");
+	j6_system_log("main thread created endpoint");
 
-	result = _syscall_thread_create(reinterpret_cast<void*>(&thread_proc), &child);
+	result = j6_thread_create(reinterpret_cast<void*>(&thread_proc), &child);
 	if (result != j6_status_ok)
 		return result;
 
-	_syscall_system_log("main thread created sub thread");
+	j6_system_log("main thread created sub thread");
 
 	char message[] = "MAIN THREAD SUCCESSFULLY CALLED SENDRECV IF THIS IS LOWERCASE";
 	size_t size = sizeof(message);
 	j6_tag_t tag = 16;
-	result = _syscall_endpoint_sendrecv(endp, &tag, &size, (void*)message);
+	result = j6_endpoint_sendrecv(endp, &tag, &size, (void*)message);
 	if (result != j6_status_ok)
 		return result;
 
 	if (tag != 17)
-		_syscall_system_log("GOT WRONG TAG FROM SENDRECV");
+		j6_system_log("GOT WRONG TAG FROM SENDRECV");
 
-	result = _syscall_system_bind_irq(__handle_sys, endp, 3);
+	result = j6_system_bind_irq(__handle_sys, endp, 3);
 	if (result != j6_status_ok)
 		return result;
 
-	_syscall_system_log(message);
+	j6_system_log(message);
 
-	_syscall_system_log("main thread waiting on child");
-	result = _syscall_object_wait(child, -1ull, &out);
+	j6_system_log("main thread waiting on child");
+	result = j6_object_wait(child, -1ull, &out);
 	if (result != j6_status_ok)
 		return result;
 
-	_syscall_system_log("main thread creating a new process");
+	j6_system_log("main thread creating a new process");
 	j6_handle_t child_proc = j6_handle_invalid;
-	result = _syscall_process_create(&child_proc);
+	result = j6_process_create(&child_proc);
 	if (result != j6_status_ok)
 		return result;
 
-	_syscall_system_log("main testing irqs");
+	j6_system_log("main testing irqs");
 
 
 	serial_port com2(COM2);
@@ -124,21 +123,21 @@ main(int argc, const char **argv)
 
 	size_t len = 0;
 	while (true) {
-		result = _syscall_endpoint_receive(endp, &tag, &len, nullptr);
+		result = j6_endpoint_receive(endp, &tag, &len, nullptr);
 		if (result != j6_status_ok)
 			return result;
 
 		if (j6_tag_is_irq(tag))
-			_syscall_system_log("main thread got irq!");
+			j6_system_log("main thread got irq!");
 	}
 
-	_syscall_system_log("main thread closing endpoint");
+	j6_system_log("main thread closing endpoint");
 
-	result = _syscall_object_close(endp);
+	result = j6_object_close(endp);
 	if (result != j6_status_ok)
 		return result;
 
-	_syscall_system_log("main thread done, exiting");
+	j6_system_log("main thread done, exiting");
 	return 0;
 }
 

src/libraries/j6/include/j6/syscalls.h

@@ -6,7 +6,7 @@
 extern "C" {
 #endif
 
-#define SYSCALL(n, name, ...) j6_status_t _syscall_ ## name (__VA_ARGS__);
+#define SYSCALL(n, name, ...) j6_status_t j6_ ## name (__VA_ARGS__);
 #include "j6/tables/syscalls.inc"
 #undef SYSCALL
 

src/libraries/j6/syscalls.s

@@ -1,6 +1,6 @@
 %macro SYSCALL 2
-	global _syscall_%1
-	_syscall_%1:
+	global j6_%1
+	j6_%1:
 		push rbp
 		mov rbp, rsp
 

src/libraries/libc/arch/x86_64/_Exit.s

@@ -1,5 +1,5 @@
-extern _syscall_process_exit
+extern j6_process_exit
 global _PDCLIB_Exit
 _PDCLIB_Exit:
 	; arg should already be in rdi
-	jmp _syscall_process_exit
+	jmp j6_process_exit

src/libraries/libc/j6libc/sbrk.c

@@ -1,6 +1,6 @@
 #include <stdint.h>
 #include <j6/errors.h>
-#include <j6libc/syscalls.h>
+#include <j6/syscalls.h>
 //void *sbrk(intptr_t) __attribute__ ((weak));
 
 static j6_handle_t __core_handle = 0;
@@ -19,7 +19,7 @@ void *sbrk(intptr_t i)
 		if (i < 0)
 			return (void*)-1;
 
-		j6_status_t result = _syscall_vma_create_map(&__core_handle, i, __core_base, 1);
+		j6_status_t result = j6_vma_create_map(&__core_handle, i, __core_base, 1);
 		if (result != j6_status_ok)
 			return (void*)-1;
 
@@ -28,7 +28,7 @@ void *sbrk(intptr_t i)
 	}
 
 	size_t new_size = __core_size + i;
-	j6_status_t result = _syscall_vma_resize(__core_handle, &new_size);
+	j6_status_t result = j6_vma_resize(__core_handle, &new_size);
 	if (result != j6_status_ok)
 		return (void*)-1;