user: store libc routines in separate section

kernel/Makefile

@@ -33,4 +33,5 @@ ARDIX_SOURCES += \
 	$(ARDIX_KERNEL_PWD)/ringbuf.c \
 	$(ARDIX_KERNEL_PWD)/sched.c \
 	$(ARDIX_KERNEL_PWD)/serial.c \
-	$(ARDIX_KERNEL_PWD)/syscall.c
+	$(ARDIX_KERNEL_PWD)/syscall.c \
+	$(ARDIX_KERNEL_PWD)/userspace.c

lib/ctype.c

@@ -2,67 +2,68 @@
 /* See the end of this file for copyright, licensing, and warranty information. */
 
 #include <ctype.h>
+#include <toolchain.h>
 
-int isalpha(int c)
+__shared int isalpha(int c)
 {
 	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
 }
 
-int isblank(int c)
+__shared int isblank(int c)
 {
 	return c == ' ' || c == '\t';
 }
 
-int iscntrl(int c)
+__shared int iscntrl(int c)
 {
 	return c == 0x7F || (c >= 0 && c <= 0x1F);
 }
 
-int isdigit(int c)
+__shared int isdigit(int c)
 {
 	return c >= '0' && c <= '9';
 }
 
-int isgraph(int c)
+__shared int isgraph(int c)
 {
 	/* space *not* included */
 	return c > 0x20 && c <= 0x7E;
 }
 
-int islower(int c)
+__shared int islower(int c)
 {
 	return c >= 'a' && c <= 'z';
 }
 
-int isprint(int c)
+__shared int isprint(int c)
 {
 	/* space *is* included */
 	return c >= 0x20 && c <= 0x7E;
 }
 
-int ispunct(int c)
+__shared int ispunct(int c)
 {
 	return isprint(c) && !isalnum(c);
 }
 
-int isspace(int c)
+__shared int isspace(int c)
 {
 	return c == ' ' || (c >= '\n' && c <= '\r');
 }
 
-int isupper(int c)
+__shared int isupper(int c)
 {
 	return c >= 'A' && c <= 'Z';
 }
 
-int isxdigit(int c)
+__shared int isxdigit(int c)
 {
 	return (c >= '0' && c <= '9')
 		|| (c >= 'A' && c <= 'F')
 		|| (c >= 'a' && c <= 'f');
 }
 
-int isascii(int c)
+__shared int isascii(int c)
 {
 	return c & 0x7F;
 }

lib/malloc.c

@@ -7,6 +7,8 @@
 #include <ardix/string.h>
 #include <ardix/types.h>
 
+#include <toolchain.h>
+
 /*
  * Stupid memory allocator implementation.
  *
@@ -141,7 +143,7 @@ void malloc_init(void *heap, size_t size)
 	}
 }
 
-__attribute__((malloc))
+__shared __attribute__((malloc))
 void *malloc(size_t size)
 {
 	struct memblk *blk;
@@ -190,7 +192,7 @@ void *malloc(size_t size)
 	return ((void *)blk) + MEMBLK_SIZE_LENGTH;
 }
 
-__attribute__((malloc))
+__shared __attribute__((malloc))
 void *calloc(size_t nmemb, size_t size)
 {
 	void *ptr = malloc(nmemb * size);
@@ -209,6 +211,7 @@ static void memblk_merge(struct memblk *lblk, struct memblk *hblk)
 	*endsz = lblk->size;
 }
 
+__shared
 void free(void *ptr)
 {
 	struct memblk *tmp;

lib/string.c

@@ -4,8 +4,11 @@
 #include <ardix/string.h>
 #include <ardix/types.h>
 
+#include <toolchain.h>
+#include <stdbool.h>
+
 #ifndef __HAVE_ASM_MEMCMP
-int memcmp(const void *s1, const void *s2, size_t n)
+__shared int memcmp(const void *s1, const void *s2, size_t n)
 {
 	int delta = 0;
 
@@ -20,7 +23,7 @@ int memcmp(const void *s1, const void *s2, size_t n)
 #endif /* __HAVE_ASM_MEMCMP */
 
 #ifndef __HAVE_ASM_MEMCPY
-void *memcpy(void *dest, const void *src, size_t n)
+__shared void *memcpy(void *dest, const void *src, size_t n)
 {
 	uint8_t *tmp = (uint8_t *)dest;
 
@@ -32,7 +35,7 @@ void *memcpy(void *dest, const void *src, size_t n)
 #endif /* __HAVE_ASM_MEMCPY */
 
 #ifndef __HAVE_ASM_MEMSET
-void *memset(void *ptr, int c, size_t n)
+__shared void *memset(void *ptr, int c, size_t n)
 {
 	char *tmp = (char *)ptr;
 
@@ -44,7 +47,7 @@ void *memset(void *ptr, int c, size_t n)
 #endif /* __HAVE_ASM_MEMSET */
 
 #ifndef __HAVE_ASM_MEMMOVE
-void *memmove(void *dest, const void *src, size_t n)
+__shared void *memmove(void *dest, const void *src, size_t n)
 {
 	char *tmp = (char *)dest;
 	const char *s = (const char *)src;
@@ -67,7 +70,7 @@ void *memmove(void *dest, const void *src, size_t n)
 #endif /* __HAVE_ASM_MEMMOVE */
 
 #ifndef __HAVE_ASM_STRCMP
-int strcmp(const char *s1, const char *s2)
+__shared int strcmp(const char *s1, const char *s2)
 {
 	while (*s1++ == *s2++) {
 		if (*s1 == '\0' || *s2 == '\0')
@@ -79,7 +82,7 @@ int strcmp(const char *s1, const char *s2)
 #endif /* __HAVE_ASM_STRCMP */
 
 #ifndef __HAVE_ASM_STRCPY
-char *strcpy(char *dest, const char *src)
+__shared char *strcpy(char *dest, const char *src)
 {
 	char *tmp = dest;
 
@@ -91,7 +94,7 @@ char *strcpy(char *dest, const char *src)
 #endif /* __HAVE_ASM_STRCPY */
 
 #ifndef __HAVE_ASM_STRNCPY
-char *strncpy(char *dest, const char *src, size_t n)
+__shared char *strncpy(char *dest, const char *src, size_t n)
 {
 	char *tmp = dest;
 
@@ -105,7 +108,7 @@ char *strncpy(char *dest, const char *src, size_t n)
 #endif /* __HAVE_ASM_STRNCPY */
 
 #ifndef __HAVE_ASM_STRLEN
-size_t strlen(const char *s)
+__shared size_t strlen(const char *s)
 {
 	const char *tmp = s;