修复syscall无法处理的问题

apps/def.mk

@@ -1,4 +1,4 @@
-CFLAGS = -m32 -I$(INCLUDE_PATH) -nostdinc -nolibc -nostdlib -ffreestanding -fno-stack-protector -Qn -fno-pic -fno-pie -fno-asynchronous-unwind-tables -fomit-frame-pointer -finput-charset=UTF-8 -fexec-charset=GB2312 -march=pentium -Qn -O0 -w
+CFLAGS = -m32 -I$(INCLUDE_PATH) -nolibc -nostdlib -ffreestanding -fno-stack-protector -Qn -fno-pic -fno-pie -fno-asynchronous-unwind-tables -fomit-frame-pointer -finput-charset=UTF-8 -fexec-charset=GB2312 -march=pentium -Qn -O0 -w
 CPPFLAGS = -m32 -I$(INCLUDE_PATH) -nostdinc -nolibc -nostdlib -ffreestanding -fno-exceptions -fno-stack-protector -Qn -fno-pic -fno-pie -fno-asynchronous-unwind-tables -fomit-frame-pointer -finput-charset=UTF-8 -fexec-charset=GB2312 -Qn -O3 -march=pentium -fno-rtti -w
 
 CC = gcc

apps/include/stdio.h

@@ -1,6 +1,9 @@
 #ifndef CRASHPOWEROS_STDIO_H
 #define CRASHPOWEROS_STDIO_H
 
+#include <stdint.h>
+#include <stddef.h>
+
 void put_char(char a);
 
 #endif

apps/include/syscall.h

@@ -0,0 +1,23 @@
+#ifndef CRASHPOWEROS_SYSCALL_H
+#define CRASHPOWEROS_SYSCALL_H
+
+#define SYSCALL_PUTCHAR 1
+#define SYSCALL_PRINT 2
+
+#include <stdint.h>
+
+static inline void syscall_print(char* c){
+    uint32_t rets;
+    uint32_t __arg1 = c;
+    register uint32_t ebx asm("ebx")  = __arg1;
+    asm volatile("int $31\n\t" : "=a"(rets) : "0"(SYSCALL_PRINT), "r"(ebx) : "memory", "cc");
+}
+
+static inline void syscall_putchar(char c){
+    uint32_t rets;
+    uint32_t __arg1 = (uint32_t)(c);
+    register uint32_t ebx asm("ebx")  = __arg1;
+    asm volatile("int $31\n\t" : "=a"(rets) : "0"(SYSCALL_PUTCHAR), "r"(ebx) : "memory", "cc");
+}
+
+#endif

apps/init/init.c

@@ -1,11 +1,12 @@
-#include "../include/stdio.h"
+#include "../include/syscall.h"
 
 void hlt(){
     while (1);
 }
 
 int main(){
-    put_char('A');
+    syscall_print("Hello! User Application!\n");
+    //put_char('A');
     hlt();
     return 0;
 }

apps/libs/Makefile

@@ -4,7 +4,7 @@ OBJS_PACK = out/syscall.obj
 default : $(OBJS_PACK)
 	ar rv ../libo/libp.a $(OBJS_PACK)
 out/%.obj : %.c Makefile
-	gcc -m32 -I../include -nostdinc -nostdlib -fno-builtin -ffreestanding -fno-stack-protector -Qn -fno-pic -fno-pie -fno-asynchronous-unwind-tables -fomit-frame-pointer -march=pentium -O0 -w -c $*.c -o out/$*.obj
+	gcc -m32 -I../include -nostdlib -fno-builtin -ffreestanding -fno-stack-protector -Qn -fno-pic -fno-pie -fno-asynchronous-unwind-tables -fomit-frame-pointer -march=pentium -O0 -w -c $*.c -o out/$*.obj
 out/%.obj : %.cpp Makefile
 	gcc -m32 -I../include -nostdinc -nostdlib -fno-builtin -ffreestanding -fno-stack-protector -Qn -fno-pic -fno-pie -fno-asynchronous-unwind-tables -fomit-frame-pointer -march=pentium -O0 -w -c $*.cpp -o out/$*.obj
 out/%.obj : %.asm Makefile

apps/libs/syscall.asm

@@ -1,8 +0,0 @@
-global put_char
-
-put_char:
-    push eax
-    mov eax, 21h
-    int 31h
-    pop eax
-    ret

apps/libs/syscall.c

@@ -0,0 +1,2 @@
+#include "../include/syscall.h"
+

src/include/syscall.h

@@ -8,54 +8,6 @@
 #define SYSCALL_PUTC 1
 #define SYSCALL_PRINT 2
 
-#define DEFN_SYSCALL0(fn, num) \
-int syscall_##fn() \
-{ \
-  int a; \
-  asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
-  return a; \
-}
-
-#define DEFN_SYSCALL1(fn, num, P1) \
-int syscall_##fn(P1 p1) \
-{ \
-  int a; \
-  asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((int)p1)); \
-  return a; \
-}
-
-#define DEFN_SYSCALL2(fn, num, P1, P2) \
-int syscall_##fn(P1 p1, P2 p2) \
-{ \
-  int a; \
-  asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((int)p1), "c" ((int)p2)); \
-  return a; \
-}
-
-#define DEFN_SYSCALL3(fn, num, P1, P2, P3) \
-int syscall_##fn(P1 p1, P2 p2, P3 p3) \
-{ \
-  int a; \
-  asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((int)p1), "c" ((int)p2), "d"((int)p3)); \
-  return a; \
-}
-
-#define DEFN_SYSCALL4(fn, num, P1, P2, P3, P4) \
-int syscall_##fn(P1 p1, P2 p2, P3 p3, P4 p4) \
-{ \
-  int a; \
-  asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((int)p1), "c" ((int)p2), "d" ((int)p3), "S" ((int)p4)); \
-  return a; \
-}
-
-#define DEFN_SYSCALL5(fn, num) \
-int syscall_##fn(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) \
-{ \
-  int a; \
-  asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((int)p1), "c" ((int)p2), "d" ((int)p3), "S" ((int)p4), "D" ((int)p5)); \
-  return a; \
-}
-
 void syscall_install();
 
 #endif

src/kernel/syscall.c

@@ -5,20 +5,17 @@
 #include "../include/graphics.h"
 #include "../include/io.h"
 
-void syscall_handler(registers_t regs){
+static void syscall_puchar(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi,uint32_t edi){
-    io_cli();
+    printf("%c",ebx);
-    register uint32_t eax asm("eax");
-    printf("Syscall is enable. EAX: %08x PHIEAX: %08x\n",regs.eax,eax);
-    if(regs.eax == 0x01){
-        putchar((regs.edx));
 }
-    io_sti();
+
-    return;
+static void syscall_print(uint32_t ebx,uint32_t ecx,uint32_t edx,uint32_t esi,uint32_t edi){
+    printf("%s",ebx);
 }
 
 void *sycall_handlers[MAX_SYSCALLS] = {
-        [SYSCALL_PUTC] = putchar,
+        [SYSCALL_PUTC] = syscall_puchar,
-        [SYSCALL_PRINT] = print,
+        [SYSCALL_PRINT] = syscall_print,
 };
 
 typedef size_t (*syscall_t)(size_t, size_t, size_t, size_t, size_t);
@@ -31,7 +28,7 @@ size_t syscall() {
     asm("mov %%edx, %0\n\t" : "=r"(edx));
     asm("mov %%esi, %0\n\t" : "=r"(esi));
     asm("mov %%edi, %0\n\t" : "=r"(edi));
-    printf("eax: %d, ebx: %d, ecx: %d, edx: %d, esi: %d, edi: %d\n", eax, ebx, ecx, edx, esi, edi);
+    //printf("eax: %08x, ebx: %08x, ecx: %08x,\n edx: %08x, esi: %08x, edi: %08x\n", eax, ebx, ecx, edx, esi, edi);
     if (0 <= eax && eax < MAX_SYSCALLS && sycall_handlers[eax] != NULL) {
         eax = ((syscall_t)sycall_handlers[eax])(ebx, ecx, edx, esi, edi);
     } else {

src/kernel/task.c

@@ -232,20 +232,21 @@ int32_t user_process(char *path, char *name){ // 用户进程创建
     memset(buffer,0,size);
     vfs_readfile(path,buffer);
 
+
     Elf32_Ehdr *ehdr = buffer;
     if(!elf32Validate(ehdr)){
         printf("Unknown exec file format.\n");
         return -1;
     }
-    printf("Process Main Address: %08x\n",ehdr->e_entry);
+   // printf("Process Main Address: %08x\n",ehdr->e_entry);
     uint32_t main = ehdr->e_entry;
     load_elf(ehdr,page);
 
 
-
     uint32_t *stack_top = (uint32_t * )((uint32_t) new_task + STACK_SIZE); 
 
     *(--stack_top) = (uint32_t) main;
+    //*(--stack_top) = (uint32_t) buffer;
     *(--stack_top) = (uint32_t) kthread_exit;
     *(--stack_top) = (uint32_t) switch_to_user_mode;
 

src/util/elf.c

@@ -31,7 +31,7 @@ void load_segment(Elf32_Phdr *phdr,page_directory_t *dir, void *elf) {
     for (size_t i = lo; i < hi; i += 0x1000) {
         alloc_frame(get_page(i,1,dir,false),0,1);
     }
-    printf("VDDR: %08x elf: %08x offset: %08x filesz: %08x elf+offset: %08x\n",phdr->p_vaddr, elf , phdr->p_offset, phdr->p_filesz, elf + phdr->p_offset);
+    //printf("VDDR: %08x elf: %08x offset: %08x filesz: %08x elf+offset: %08x\n",phdr->p_vaddr, elf , phdr->p_offset, phdr->p_filesz, elf + phdr->p_offset);
     //if(phdr->p_vaddr == 0xaffff000) return;
     memcpy((void *)phdr->p_vaddr, elf + phdr->p_offset, phdr->p_filesz);
     if (phdr->p_memsz > phdr->p_filesz) { // 这个是bss段