Floating point numbers work, _start.S fix stack alignment, fix debug info

ce/interp.c

@@ -11,6 +11,7 @@
 #include <kb.h>
 #include <liballoc.h>
 #include <path.h>
+#include <printf.h>
 #include <process.h>
 #include <stddef.h>
 #include <str_status.h>
@@ -24,6 +25,26 @@ bool interp_is_running (void) { return run; }
 
 void interp_shutdown (void) { run = false; }
 
+static void human_size (double size, double* out, char** str) {
+  if (size >= 1024.0f && size < 1024.0f * 1024.0f) {
+    *out = (double)size / 1024.0f;
+    *str = "KiB";
+  } else if (size >= 1024.0f * 1024.0f && size < 1024.0f * 1024.0f * 1024.0f) {
+    *out = (double)size / (1024.0f * 1024.0f);
+    *str = "MiB";
+  } else if (size >= 1024.0f * 1024.0f * 1024.0f && size < 1024.0f * 1024.0f * 1024.0f * 1024.0f) {
+    *out = (double)size / (1024.0f * 1024.0f * 1024.0f);
+    *str = "GiB";
+  } else if (size >= 1024.0f * 1024.0f * 1024.0f * 1024.0f &&
+             size < 1024.0f * 1024.0f * 1024.0f * 1024.0f * 1024.0f) {
+    *out = (double)size / (1024.0f * 1024.0f * 1024.0f * 1024.0f);
+    *str = "TiB";
+  } else {
+    *out = 0.0f;
+    *str = "???";
+  }
+}
+
 static void echo (struct context* context, char** strings, size_t strings_count) {
   for (size_t i = 0; i < strings_count; i++)
     cprintf (context, "%s ", strings[i]);
@@ -192,8 +213,16 @@ static void ls (struct context* context, const char* path_string) {
     read_dir_entry (path, &entry, entry_num);
     describe (entry.path, &desc);
 
-    cprintf (context, "%c %-40s %-40zu\n", (desc.type == FS_DIR ? 'D' : 'F'), entry.path,
-             desc.size);
+    char* hs_string;
+    double hs;
+    human_size ((double)desc.size, &hs, &hs_string);
+
+    char size_buf[64];
+    snprintf (size_buf, sizeof (size_buf), "%.2f %s", hs, hs_string);
+
+    char type = (desc.type == FS_DIR ? 'D' : 'F');
+
+    cprintf (context, "%c %-40s %-40s\n", type, entry.path, size_buf);
   }
 
   volume_close ();

generic/flags.mk

@@ -9,7 +9,7 @@ cflags += -nostdinc \
 					-Wextra
 
 ifeq ($(buildtype),debug)
-	cflags += -O0 -g
+	cflags += -O0 -g3
 endif
 
 ifeq ($(buildtype),release)

kernel/generic/flags.mk

@@ -17,7 +17,7 @@ cflags += -DPRINTF_INCLUDE_CONFIG_H=1 \
 					-DXXH_NAMESPACE=LZ4_
 
 ifeq ($(buildtype),debug)
-	cflags += -O0 -g
+	cflags += -O0 -g3
 endif
 
 ifeq ($(buildtype),release)

libaux/printf_config.h

@@ -2,7 +2,7 @@
 #define _KERNEL_LIBK_PRINTF_CONFIG_H
 
 #define PRINTF_ALIAS_STANDARD_FUNCTION_NAMES_HARD 1
-#define PRINTF_SUPPORT_DECIMAL_SPECIFIERS         0
-#define PRINTF_SUPPORT_EXPONENTIAL_SPECIFIERS     0
+#define PRINTF_SUPPORT_DECIMAL_SPECIFIERS         1
+#define PRINTF_SUPPORT_EXPONENTIAL_SPECIFIERS     1
 
 #endif // _KERNEL_LIBK_PRINTF_CONFIG_H

libsystem/amd64/_start.S

@@ -3,6 +3,5 @@ _start:
   xorq %rbp, %rbp
   movq %rsp, %rbp
   andq $-16, %rsp
-  subq $8, %rsp
 
   callq __premain