My errors

kernel.cpp:85:23: error: expected primary-expression before 'asm'
   85 | u32 modeInfoPointer = asm volatile ("eax");
      |                       ^~~
kernel.cpp:88:39: error: request for member 'PhysBasePtr' in 'modeInfoPointer', which is of non-class type 'u32' {aka 'unsigned int'}
   88 | static u32 *BUFFER = (u32 *) modeInfo.PhysBasePtr;
      |                                       ^~~~~~~~~~~
kernel.cpp:17:37: error: request for member 'XResolution' in 'modeInfoPointer', which is of non-class type 'u32' {aka 'unsigned int'}
   17 | #define SCREEN_WIDTH (int)(modeInfo.XResolution)
      |                                     ^~~~~~~~~~~
kernel.cpp:20:22: note: in expansion of macro 'SCREEN_WIDTH'
   20 | #define SCREEN_SIZE (SCREEN_WIDTH * SCREEN_HEIGHT)
      |                      ^~~~~~~~~~~~
kernel.cpp:91:18: note: in expansion of macro 'SCREEN_SIZE'
   91 | u32 _sbuffers[2][SCREEN_SIZE];
      |                  ^~~~~~~~~~~
kernel.cpp:18:38: error: request for member 'YResolution' in 'modeInfoPointer', which is of non-class type 'u32' {aka 'unsigned int'}
   18 | #define SCREEN_HEIGHT (int)(modeInfo.YResolution)
      |                                      ^~~~~~~~~~~
kernel.cpp:20:37: note: in expansion of macro 'SCREEN_HEIGHT'
   20 | #define SCREEN_SIZE (SCREEN_WIDTH * SCREEN_HEIGHT)
      |                                     ^~~~~~~~~~~~~
kernel.cpp:91:18: note: in expansion of macro 'SCREEN_SIZE'
   91 | u32 _sbuffers[2][SCREEN_SIZE];
      |                  ^~~~~~~~~~~
kernel.cpp: In function 'void screen_set(u32, int, int)':
kernel.cpp:107:37: error: request for member 'PhysBasePtr' in 'modeInfoPointer', which is of non-class type 'u32' {aka
unsigned int'}
  107 |     u32 physical_address = modeInfo.PhysBasePtr + y * modeInfo.LinBytesPerScanLine + x * bytesPerPixel;
      |                                     ^~~~~~~~~~~
kernel.cpp:107:64: error: request for member 'LinBytesPerScanLine' in 'modeInfoPointer', which is of non-class type 'u3
' {aka 'unsigned int'}
  107 |     u32 physical_address = modeInfo.PhysBasePtr + y * modeInfo.LinBytesPerScanLine + x * bytesPerPixel;
      |                                                                ^~~~~~~~~~~~~~~~~~~
kernel.cpp:104:33: error: base operand of '->' is not a pointer
  104 | #define bytesPerPixel ((modeInfo->BitsPerPixel + 7) / 8)
      |                                 ^~
kernel.cpp:107:90: note: in expansion of macro 'bytesPerPixel'
  107 |     u32 physical_address = modeInfo.PhysBasePtr + y * modeInfo.LinBytesPerScanLine + x * bytesPerPixel;
      |                                                                                          ^~~~~~~~~~~~~
kernel.cpp:108:5: error: '_sbuffers' was not declared in this scope
  108 |     _sbuffers[_sback][physical_address]=color;
      |     ^~~~~~~~~
kernel.cpp: In function 'void screen_swap()':
kernel.cpp:94:18: error: '_sbuffers' was not declared in this scope
   94 | #define CURRENT (_sbuffers[_sback])
      |                  ^~~~~~~~~
kernel.cpp:232:20: note: in expansion of macro 'CURRENT'
  232 |     memcpy(BUFFER, CURRENT, SCREEN_SIZE);
      |                    ^~~~~~~
kernel.cpp:17:37: error: request for member 'XResolution' in 'modeInfoPointer', which is of non-class type 'u32' {aka 'unsigned int'}
   17 | #define SCREEN_WIDTH (int)(modeInfo.XResolution)
      |                                     ^~~~~~~~~~~
kernel.cpp:20:22: note: in expansion of macro 'SCREEN_WIDTH'
   20 | #define SCREEN_SIZE (SCREEN_WIDTH * SCREEN_HEIGHT)
      |                      ^~~~~~~~~~~~
kernel.cpp:232:29: note: in expansion of macro 'SCREEN_SIZE'
  232 |     memcpy(BUFFER, CURRENT, SCREEN_SIZE);
      |                             ^~~~~~~~~~~
kernel.cpp:18:38: error: request for member 'YResolution' in 'modeInfoPointer', which is of non-class type 'u32' {aka 'unsigned int'}
   18 | #define SCREEN_HEIGHT (int)(modeInfo.YResolution)
      |                                      ^~~~~~~~~~~
kernel.cpp:20:37: note: in expansion of macro 'SCREEN_HEIGHT'
   20 | #define SCREEN_SIZE (SCREEN_WIDTH * SCREEN_HEIGHT)
      |                                     ^~~~~~~~~~~~~
kernel.cpp:232:29: note: in expansion of macro 'SCREEN_SIZE'
  232 |     memcpy(BUFFER, CURRENT, SCREEN_SIZE);
      |                             ^~~~~~~~~~~