[update] os

laos/Makefile

@@ -28,15 +28,16 @@ LD_CSRIPT	:= kernel.ld
 EXTRA_MACRO	:= # NDEBUG
 
 EXTRA_FLAGS =  -Wall -Werror -O0 -fno-omit-frame-pointer -ggdb -gdwarf-2
+EXTRA_FLAGS += -mfpu=none -march=loongarch32r -mabi=ilp32s
 EXTRA_FLAGS += -MD
 EXTRA_FLAGS += -ffreestanding -fno-common -nostdlib
 EXTRA_FLAGS += -I.
 EXTRA_FLAGS += -fno-pie -no-pie
 EXTRA_FLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 
-COMMONFLAGS	:= $(EXTRA_FLAGS) -march=loongarch32r
+COMMONFLAGS	:= $(EXTRA_FLAGS)
 CPPFLAGS	+= $(addprefix -D,$(EXTRA_MACRO)) -I$(CURDIR)/include
-CFLAGS		+= $(COMMONFLAGS) -O
+CFLAGS		+= $(COMMONFLAGS)
 LDFLAGS		+= $(COMMONFLAGS) -z max-page-size=4096 -T$(LD_CSRIPT)
 
 .PHONY: all build clean
@@ -70,3 +71,6 @@ usr:
 	@TOP_BUILD_DIR=$(ABS_BUILD) \
 	CPPFLAGS="$(CPPFLAGS)"		\
 	$(MAKE) native -C $(TOP_SRC_DIR)/user -j$(NPROC)
+
+tcpl:
+	$(CC) --target-help

laos/include/dev.h

@@ -0,0 +1,6 @@
+#ifndef DEV_H__
+#define DEV_H__
+
+extern char ioports[];
+
+#endif

laos/include/filepath.h

@@ -0,0 +1,9 @@
+#ifndef FILEPATH_H__
+#define FILEPATH_H__
+
+
+char *basename(char *bnm, const char *path);
+char *rmext(char *noext, const char *fname);
+char *bearname(char *bnm, const char *fname);
+
+#endif

laos/include/la32r.h

@@ -1,8 +1,16 @@
+
+
 #include "asm.h"
 #include "defs.h"
 #include "latype.h"
 #include "macro.h"
 
+#ifndef __loongarch32r
+#define __loongarch32r
+#endif
+
+#include "larchintrin.h"
+
 #ifndef LA32R_H__
 #define LA32R_H__
 
@@ -56,18 +64,10 @@ static inline uint r_ra() {
 // mem misc
 //
 
-static inline void dbar() {
-  asm volatile("dbar 0");
-}
-
-static inline void ibar() {
-  asm volatile("ibar 0");
-}
-
 // need to be tested
 static inline void synchronize() {
-    dbar();
-    ibar();
+    __dbar(0);
+    __ibar(0);
 }
 
 
@@ -101,4 +101,6 @@ static inline uint scw(uint wdata, intptr_t addr) {
     return recv;
 }
 
+
+
 #endif

laos/include/memlayout.h

@@ -4,6 +4,6 @@
 #define DEV_BASE_ADDR   0xa0000000
 
 
-#define SERIAL_ADDR     (DEV_BASE_ADDR + 0x00000000)
+#define SERIAL_OFFSET   0x00000000
 
 #endif

laos/kernel.ld

@@ -38,4 +38,5 @@ SECTIONS
   }
 
   PROVIDE(end = .);
+  PROVIDE(ioports = 0xa0000000);
 }

laos/src/dev/dev.c

@@ -0,0 +1,3 @@
+#include "dev.h"
+
+char ioports[];

laos/src/kernel/console.c

@@ -2,16 +2,18 @@
 #include "memio.h"
 #include "memlayout.h"
 #include "spinlock.h"
+#include "dev.h"
 
 void consputc(int c) {
-    if (c == '\b') {
-        memb(SERIAL_ADDR) = '\b';
-        memb(SERIAL_ADDR) =  ' ';
-        memb(SERIAL_ADDR) = '\b';
-        return;
-    }
+  volatile char *out = &ioports[SERIAL_OFFSET];
+  if (c == '\b') {
+    *out = '\b';
+    *out = ' ';
+    *out = '\b';
+    return;
+  }
 
-    memb(SERIAL_ADDR) = c;
+  *out = c;
 }
 
 struct {
@@ -20,9 +22,7 @@ struct {
   // input
 #define INPUT_BUF_SIZE 128
   char buf[INPUT_BUF_SIZE];
-  uint r;  // Read index
-  uint w;  // Write index
-  uint e;  // Edit index
+  uint r; // Read index
+  uint w; // Write index
+  uint e; // Edit index
 } cons;
-
-

laos/src/user/xargs.c

@@ -29,11 +29,9 @@ int main(int argc, char *argv[]) {
 
     char *tok = strtok(input, " ");
     while (tok) {
-        if (*tok != '\n') {
-            args = realloc(args, (argc + 1) * sizeof(char *));
-            args[argc] = tok;
-            argc += 1;
-        }
+        args = realloc(args, (argc + 1) * sizeof(char *));
+        args[argc] = tok;
+        argc += 1;
         tok = strtok(NULL, " ");
     }
 

laos/src/util/filepath.c

@@ -0,0 +1,71 @@
+#include "defs.h"
+
+//
+// bnm should be large enough to hold basename
+//
+char *basename(char *bnm, const char *path) {
+    const char *p = path;
+    const char *last_slash = NULL;
+    while (*p) {
+        if (*p == '/' || *p == '\\') {
+            last_slash = p;
+        }
+        p++;
+    }
+
+    char *q = bnm;
+    p = last_slash + 1;
+    while (*p) {
+        *q++ = *p++;
+    }
+
+    return bnm;
+}
+
+//
+// noext should be large enough to hold no-ext name
+//
+char *rmext(char *noext, const char *fname) {
+    const char *p = fname;
+    const char *last_dot = NULL;
+    while (*p) {
+        if (*p == '.') {
+            last_dot = p;
+        }
+        p++;
+    }
+
+    char *q = noext;
+    p = fname;
+    while (p != last_dot) {
+        *q++ = *p++;
+    }
+
+    return noext;
+}
+
+
+//
+// bnm should be large enough to hold bearname name
+//
+char *bearname(char *bnm, const char *fname) {
+    const char *p = fname;
+    const char *last_slash = NULL;
+    const char *last_dot = NULL;
+    while (*p) {
+        if (*p == '/' || *p == '\\') {
+            last_slash = p;
+        } else if (*p == '.') {
+            last_dot = p;
+        }
+        p++;
+    }
+
+    char *q = bnm;
+    p = last_slash + 1;
+    while (p != last_dot) {
+        *q++ = *p++;
+    }
+
+    return bnm;
+}