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-rw-r--r--src/kernel/Makefile6
-rw-r--r--src/kernel/lib/sched.c26
-rw-r--r--src/kernel/lib/sched.h24
-rw-r--r--src/kernel/lib/std.cpp87
-rw-r--r--src/kernel/lib/std.h21
-rw-r--r--src/kernel/linker/elf.cpp2
-rw-r--r--src/kernel/mem/_dlmalloc.h5
-rw-r--r--src/kernel/mem/gdt.cpp2
-rw-r--r--src/kernel/mem/mem.h4
-rw-r--r--src/kernel/mem/paging.cpp2
-rw-r--r--src/kernel/task/idt.cpp1
-rw-r--r--src/kernel/ui/vt.cpp4
-rw-r--r--src/kernel/vfs/vdir.h2
13 files changed, 165 insertions, 21 deletions
diff --git a/src/kernel/Makefile b/src/kernel/Makefile
index bfa5908..5c09e80 100644
--- a/src/kernel/Makefile
+++ b/src/kernel/Makefile
@@ -1,18 +1,16 @@
Out = kernel.elf
Obj = core/loader_.o core/kmain.o core/sys.o \
task/timer.o task/idt.o task/idt_.o task/task.o task/task_.o task/syscall.o task/sched.o \
- lib/bitset.o lib/std.o lib/cpp.o \
+ lib/bitset.o lib/std.o lib/cpp.o lib/sched.o \
mem/mem.o mem/paging.o mem/gdt.o mem/_dlmalloc.o mem/seg.o \
linker/elf.o \
vfs/node.o vfs/vdir.o \
dev/vgatxt.o dev/keyboard.o dev/ps2keyboard.o \
ui/vt.o
-ExtObj = $(SrcPath)/common/_common.o
-
include $(SrcPath)/common.make
-CFLAGS += -I $(SrcPath)/common/include -I . -I ./lib
+CFLAGS += -I $(SrcPath)/include -I . -I ./lib
LDFLAGS += -T link.ld -Map kernel.map
diff --git a/src/kernel/lib/sched.c b/src/kernel/lib/sched.c
new file mode 100644
index 0000000..29ea8a8
--- /dev/null
+++ b/src/kernel/lib/sched.c
@@ -0,0 +1,26 @@
+#include <sched.h>
+
+/* Internal use only. This function is atomic, meaning it cannot be interrupted by a system task switch. */
+static uint32_t atomic_exchange(uint32_t* ptr, uint32_t newval) {
+ uint32_t r;
+ asm volatile("xchg (%%ecx), %%eax" : "=a"(r) : "c"(ptr), "a"(newval));
+ return r;
+}
+
+int mutex_lock(uint32_t* mutex) {
+ while (atomic_exchange(mutex, MUTEX_LOCKED) == MUTEX_LOCKED) {
+ schedule();
+ }
+ return 0;
+}
+
+int mutex_lockE(uint32_t* mutex) {
+ if (atomic_exchange(mutex, MUTEX_LOCKED) == MUTEX_LOCKED) {
+ return 0;
+ }
+ return 1;
+}
+
+void mutex_unlock(uint32_t* mutex) {
+ *mutex = MUTEX_UNLOCKED;
+}
diff --git a/src/kernel/lib/sched.h b/src/kernel/lib/sched.h
new file mode 100644
index 0000000..1fe148d
--- /dev/null
+++ b/src/kernel/lib/sched.h
@@ -0,0 +1,24 @@
+#ifndef DEF_MUTEX_H
+#define DEF_MUTEX_H
+
+#include <types.h>
+
+#define MUTEX_LOCKED 1
+#define MUTEX_UNLOCKED 0
+
+//A mutex is just an uint32_t
+typedef uint32_t mutex_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int mutex_lock(mutex_t* mutex); //wait for mutex to be free
+int mutex_lockE(mutex_t* mutex); //lock mutex only if free, returns !0 if locked, 0 if was busy
+void mutex_unlock(mutex_t* mutex);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/kernel/lib/std.cpp b/src/kernel/lib/std.cpp
index aa5f606..4407f55 100644
--- a/src/kernel/lib/std.cpp
+++ b/src/kernel/lib/std.cpp
@@ -5,8 +5,89 @@
int errno = 0;
void abort() {
- ke_vt->writeStr("\n\n ABORT - errno: ");
- ke_vt->writeDec(errno);
- ke_vt->writeStr("\n");
+ *ke_vt << "\n\n ABORT - errno: ";
+ *ke_vt << errno;
+ *ke_vt <<"\n";
PANIC("abort() called, probably a memory manager failure.");
}
+
+
+
+int strlen(const char *str) {
+ int i = 0;
+ while (str[i++]);
+ return i;
+}
+
+char *strchr(const char *str, char c) {
+ while (*str) {
+ if (*str == c) return (char*)str;
+ str++;
+ }
+ return NULL;
+}
+
+char *strcpy(char *dest, const char *src) {
+ memcpy(dest, src, strlen(src) + 1);
+ return (char*)src;
+}
+
+char *strdup(const char *src) {
+ char* ret = (char*)kmalloc(strlen(src) + 1);
+ if (ret == NULL) return ret;
+ strcpy(ret, src);
+ return ret;
+}
+
+char *strcat(char *dest, const char *src) {
+ char *dest2 = dest;
+ dest2 += strlen(dest) - 1;
+ while (*src) {
+ *dest2 = *src;
+ src++;
+ dest2++;
+ }
+ *dest2 = 0;
+ return dest;
+}
+
+int strcmp(const char *s1, const char *s2) {
+ while ((*s1) && (*s1 == *s2)) {
+ s1++;
+ s2++;
+ }
+ return (* (unsigned char*)s1 - *(unsigned char*)s2);
+}
+
+void *memcpy(void *vd, const void *vs, int count) {
+ uint8_t *dest = (uint8_t*)vd, *src = (uint8_t*)vs;
+ int f = count % 4, n = count / 4, i;
+ const uint32_t* s = (uint32_t*)src;
+ uint32_t* d = (uint32_t*)dest;
+ for (i = 0; i < n; i++) {
+ d[i] = s[i];
+ }
+ if (f != 0) {
+ for (i = count - f; i < count; i++) {
+ dest[i] = src[i];
+ }
+ }
+ return vd;
+}
+
+void *memset(void *dest, int val, int count) {
+ uint8_t *dest_c = (uint8_t*)dest;
+ int i;
+ for (i = 0; i < count; i++) {
+ dest_c[i] = val;
+ }
+ return dest;
+}
+
+uint16_t *memsetw(uint16_t *dest, uint16_t val, int count) {
+ int i;
+ for (i = 0; i < count; i++) {
+ dest[i] = val;
+ }
+ return dest;
+}
diff --git a/src/kernel/lib/std.h b/src/kernel/lib/std.h
index ced49b5..fc1b65d 100644
--- a/src/kernel/lib/std.h
+++ b/src/kernel/lib/std.h
@@ -5,10 +5,27 @@
#include <types.h> /* For size_t */
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
#ifdef __cplusplus
-extern "C" void abort();
-#else
+extern "C" {
+#endif
+
void abort();
+void *memcpy(void *dest, const void *src, int count);
+void *memset(void *dest, int val, int count);
+uint16_t *memsetw(uint16_t *dest, uint16_t val, int count);
+
+int strlen(const char *str);
+char *strcpy(char *dest, const char *src);
+char *strdup(const char *src);
+char *strchr(const char *str, char c);
+char *strcat(char *dest, const char *src);
+int strcmp(const char *s1, const char *s2);
+
+#ifdef __cplusplus
+}
#endif
#define sbrk ksbrk
diff --git a/src/kernel/linker/elf.cpp b/src/kernel/linker/elf.cpp
index 29689a2..c6aebaa 100644
--- a/src/kernel/linker/elf.cpp
+++ b/src/kernel/linker/elf.cpp
@@ -1,7 +1,7 @@
#include "elf.h"
#include <mem/paging.h>
#include <mem/seg.h>
-#include <stdlib_common.h>
+#include <lib/std.h>
#include <core/sys.h>
int elf_check(uint8_t *data) {
diff --git a/src/kernel/mem/_dlmalloc.h b/src/kernel/mem/_dlmalloc.h
index 23682be..b171ef1 100644
--- a/src/kernel/mem/_dlmalloc.h
+++ b/src/kernel/mem/_dlmalloc.h
@@ -3,16 +3,15 @@
#include <types.h>
#include "lib/std.h"
-#include <stdlib_common.h>
-#include <string.h>
#define NO_MALLOC_STATS 1
#define LACKS_TIME_H
#define LACKS_UNISTD_H
#define LACKS_SYS_PARAM_H
#define LACKS_STDLIB_H
+#define LACKS_STRING_H
-// #define USE_DL_PREFIX
+#define USE_DL_PREFIX
#define USE_LOCKS 2
diff --git a/src/kernel/mem/gdt.cpp b/src/kernel/mem/gdt.cpp
index cca1767..1cac335 100644
--- a/src/kernel/mem/gdt.cpp
+++ b/src/kernel/mem/gdt.cpp
@@ -1,5 +1,5 @@
#include "gdt.h"
-#include <stdlib_common.h>
+#include <lib/std.h>
extern "C" void gdt_flush(uint32_t); //ASM (imported from idt_.asm)
extern "C" void tss_flush();
diff --git a/src/kernel/mem/mem.h b/src/kernel/mem/mem.h
index 4201983..085d9ce 100644
--- a/src/kernel/mem/mem.h
+++ b/src/kernel/mem/mem.h
@@ -14,8 +14,8 @@ void kfree_page(void* page);
extern "C" void* ksbrk(size_t size);
extern "C" void kbrk(void* ptr);
-#define kmalloc malloc
-#define kfree free
+#define kmalloc dlmalloc
+#define kfree dlfree
extern bool _no_more_ksbrk;
extern size_t mem_placementAddr;
diff --git a/src/kernel/mem/paging.cpp b/src/kernel/mem/paging.cpp
index a6daf68..03c6e2d 100644
--- a/src/kernel/mem/paging.cpp
+++ b/src/kernel/mem/paging.cpp
@@ -1,11 +1,11 @@
#include "paging.h"
#include <bitset.h>
-#include <stdlib_common.h>
#include "mem.h"
#include "seg.h"
#include <core/sys.h>
#include <task/task.h>
#include <ui/vt.h>
+#include <lib/std.h>
static bitset frames;
diff --git a/src/kernel/task/idt.cpp b/src/kernel/task/idt.cpp
index 3d6d3cb..e56a51b 100644
--- a/src/kernel/task/idt.cpp
+++ b/src/kernel/task/idt.cpp
@@ -7,7 +7,6 @@
#include <ui/vt.h>
-#include <stdlib_common.h>
extern "C" {
diff --git a/src/kernel/ui/vt.cpp b/src/kernel/ui/vt.cpp
index 683d484..cbb29f7 100644
--- a/src/kernel/ui/vt.cpp
+++ b/src/kernel/ui/vt.cpp
@@ -129,7 +129,7 @@ int vt::outputTo(display *display) {
w = output->text_w();
h = output->text_h();
- text = (vt_char*)malloc(w * h * sizeof(vt_char));
+ text = (vt_char*)kmalloc(w * h * sizeof(vt_char));
for (int c = 0; c < w; c++) {
for (int l = 0; l < h; l++) {
if (c < ow && l < oh) {
@@ -139,7 +139,7 @@ int vt::outputTo(display *display) {
}
}
}
- if (old_text != 0) free(old_text);
+ if (old_text != 0) kfree(old_text);
if (csr_c >= w) csr_c = w;
if (csr_l >= h) csr_l = h;
} else {
diff --git a/src/kernel/vfs/vdir.h b/src/kernel/vfs/vdir.h
index 609a504..7ac1b2a 100644
--- a/src/kernel/vfs/vdir.h
+++ b/src/kernel/vfs/vdir.h
@@ -3,7 +3,7 @@
#include "node.h"
#include <lib/earray.h>
-#include <string.h>
+#include <lib/std.h>
struct vdir_child {
char* name;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 14:08:10 +0000