getting mem from mutliboot or whatever

boot.s

@@ -76,6 +76,12 @@ _start:
 	runtime support to work as well.
 	*/
 
+	/*
+	this will put the mutliboot structure into our c code
+	*/
+	push %ebx
+	
+
 	/*
 	Enter the high-level kernel. The ABI requires the stack is 16-byte
 	aligned at the time of the call instruction (which afterwards pushes

kernel.c

@@ -1,7 +1,7 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
- 
+#include "multiboot.h"
 /* Check if the compiler thinks you are targeting the wrong operating system. */
 #if defined(__linux__)
 #error "You are not using a cross-compiler, you will most certainly run into trouble"
@@ -114,7 +114,7 @@ void terminal_writestring(const char* data) {
 	terminal_write(data, strlen(data));
 }
 
-void int_to_string(char * str, size_t strlen, int conv) {
+void int_to_string(char * str, size_t strlen, size_t conv) {
 	char buffer[100];
 	for (int i = 0; i < 100; i++) {
 		buffer[i] = -1;
@@ -140,15 +140,34 @@ void int_to_string(char * str, size_t strlen, int conv) {
 
 }
  
-void kernel_main(void) {
+void kernel_main(unsigned long addr) {
 	/* Initialize terminal interface */
 	terminal_initialize();
+	//uint32_t * flags = (uint32_t *) addr;
 
 	/* Newline support is left as an exercise. */
 
+	multiboot_info_t *mbi = (multiboot_info_t *) addr;
+
 	char x[50];
-	int_to_string(x, 50, 12345);
+	for (int i = 0; i < 50; i++) {
+		x[i] = -1;
+	}
+	int_to_string(x, 50, mbi->mem_lower);
 	terminal_writestring(x);
+	terminal_writestring("\n");
+
+	for (int i = 0; i < 50; i++) {
+		x[i] = -1;
+	}
+
+	int_to_string(x, 50, mbi->mem_upper);
+
+	terminal_writestring(x);
+	terminal_writestring("\n");
+
+
+	terminal_writestring("erm what da sigma\n");
 	terminal_writestring("Hello, kernel World!\n");
 	terminal_writestring("Hello, kernel World!\n");
 	terminal_writestring("Hello, kernel World!\n");

multiboot.h

@@ -0,0 +1,108 @@
+#ifndef MULTIBOOT_HEADER
+#define MULTIBOOT_HEADER
+
+typedef unsigned char           multiboot_uint8_t;
+typedef unsigned short          multiboot_uint16_t;
+typedef unsigned int            multiboot_uint32_t;
+typedef unsigned long long      multiboot_uint64_t;
+
+struct multiboot_aout_symbol_table
+{
+  multiboot_uint32_t tabsize;
+  multiboot_uint32_t strsize;
+  multiboot_uint32_t addr;
+  multiboot_uint32_t reserved;
+};
+typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
+
+struct multiboot_elf_section_header_table
+{
+  multiboot_uint32_t num;
+  multiboot_uint32_t size;
+  multiboot_uint32_t addr;
+  multiboot_uint32_t shndx;
+};
+typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
+
+
+
+struct multiboot_info
+{
+  /* Multiboot info version number */
+  multiboot_uint32_t flags;
+
+  /* Available memory from BIOS */
+  multiboot_uint32_t mem_lower;
+  multiboot_uint32_t mem_upper;
+
+  /* "root" partition */
+  multiboot_uint32_t boot_device;
+
+  /* Kernel command line */
+  multiboot_uint32_t cmdline;
+
+  /* Boot-Module list */
+  multiboot_uint32_t mods_count;
+  multiboot_uint32_t mods_addr;
+
+  union
+  {
+    multiboot_aout_symbol_table_t aout_sym;
+    multiboot_elf_section_header_table_t elf_sec;
+  } u;
+
+  /* Memory Mapping buffer */
+  multiboot_uint32_t mmap_length;
+  multiboot_uint32_t mmap_addr;
+
+  /* Drive Info buffer */
+  multiboot_uint32_t drives_length;
+  multiboot_uint32_t drives_addr;
+
+  /* ROM configuration table */
+  multiboot_uint32_t config_table;
+
+  /* Boot Loader Name */
+  multiboot_uint32_t boot_loader_name;
+
+  /* APM table */
+  multiboot_uint32_t apm_table;
+
+  /* Video */
+  multiboot_uint32_t vbe_control_info;
+  multiboot_uint32_t vbe_mode_info;
+  multiboot_uint16_t vbe_mode;
+  multiboot_uint16_t vbe_interface_seg;
+  multiboot_uint16_t vbe_interface_off;
+  multiboot_uint16_t vbe_interface_len;
+
+  multiboot_uint64_t framebuffer_addr;
+  multiboot_uint32_t framebuffer_pitch;
+  multiboot_uint32_t framebuffer_width;
+  multiboot_uint32_t framebuffer_height;
+  multiboot_uint8_t framebuffer_bpp;
+#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
+#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB     1
+#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT     2
+  multiboot_uint8_t framebuffer_type;
+  union
+  {
+    struct
+    {
+      multiboot_uint32_t framebuffer_palette_addr;
+      multiboot_uint16_t framebuffer_palette_num_colors;
+    };
+    struct
+    {
+      multiboot_uint8_t framebuffer_red_field_position;
+      multiboot_uint8_t framebuffer_red_mask_size;
+      multiboot_uint8_t framebuffer_green_field_position;
+      multiboot_uint8_t framebuffer_green_mask_size;
+      multiboot_uint8_t framebuffer_blue_field_position;
+      multiboot_uint8_t framebuffer_blue_mask_size;
+    };
+  };
+};
+typedef struct multiboot_info multiboot_info_t;
+
+#endif