KolibriOS/kolibrios64
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seems like now doesnt violate 16 byte alignment of stack, refactoring

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rgimad
2025-02-04 23:48:54 +03:00
parent a8891056d5
commit de87ec4d9f
1 changed files with 51 additions and 81 deletions
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132
kernel/boot/bootx64.asm
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@@ -23,61 +23,54 @@ MEMORY_MAP_SIZE = 0x10000
; rcx - color = fore | back
efi_set_text_color:
push rax rdx
proc efi_set_text_color uses rax rdx
mov rax, [efi_table]
mov rax, [rax+EFI_SYSTEM_TABLE.ConOut]
mov rdx, rcx ; arg2 - color
mov rcx, rax ; arg1 - this
fstcall [rax+EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.SetAttribute]
pop rdx rax
ret
endp
; rcx - null-terminated string
efi_puts:
push rax rdx
proc efi_puts uses rax rdx
mov rax, [efi_table]
mov rax, [rax+EFI_SYSTEM_TABLE.ConOut]
mov rdx, rcx ; arg2 - string
mov rcx, rax ; arg1 - this
fstcall [rcx+EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.OutputString]
pop rdx rax
ret
endp
; rcx - char
efi_putc:
push rax rdx
proc efi_putc uses rax rdx
locals
chr dq 0
endl
mov rax, [efi_table]
mov rax, [rax+EFI_SYSTEM_TABLE.ConOut]
push qword 0
mov byte [rsp], cl
mov rdx, rsp
mov rcx, rax
mov byte [chr], cl
lea rdx, [chr] ; arg2 - string
mov rcx, rax ; arg1 - this
fstcall [rcx+EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.OutputString]
add rsp, 8
pop rdx rax
ret
endp
; print hex without leading zeros
; rcx - number
efi_print_hex_no_lz:
push rax rbx rcx rdx r8
push qword 0
push qword 0
push qword 0
push qword 0
push qword 0
proc efi_print_hex_no_lz uses rax rbx rcx rdx r8 r10 ; TODO also need function that displays with leading zeros
locals
buf dq 5 dup(0)
endl
xor r10, r10 ; leading zeros end flag
mov rdx, rcx
mov rcx, 64 ; how many nibbles in qword
xor r8, r8
mov byte [rsp + r8*2 ], '0'
mov byte [rsp + r8*2 + 1], 0
mov byte [buf + r8*2 ], '0'
mov byte [buf + r8*2 + 1], 0
inc r8
mov byte [rsp + r8*2 ], 'x'
mov byte [rsp + r8*2 + 1], 0
mov byte [buf + r8*2 ], 'x'
mov byte [buf + r8*2 + 1], 0
inc r8
.lp:
sub rcx, 4
@@ -95,8 +88,8 @@ efi_print_hex_no_lz:
@@:
lea rax, [hex_codes + rbx]
movzx rax, byte [rax]
mov byte [rsp + r8*2 ], al
mov byte [rsp + r8*2 + 1], 0 ; set high byte to 0 bc UEFI OutputString needs CHAR16
mov byte [buf + r8*2 ], al
mov byte [buf + r8*2 + 1], 0 ; set high byte to 0 bc UEFI OutputString needs CHAR16
inc r8
.lp_cont:
@@ -105,15 +98,14 @@ efi_print_hex_no_lz:
cmp r8, 2
ja @f
mov byte [rsp + r8*2 ], '0'
mov byte [rsp + r8*2 + 1], 0
mov byte [buf + r8*2 ], '0'
mov byte [buf + r8*2 + 1], 0
@@:
mov rcx, rsp
call efi_puts
lea rcx, [buf]
fstcall efi_puts, rcx
pop r8 rdx rcx rbx rax
add rsp, 8*5
ret
endp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -133,48 +125,36 @@ proc main _efi_handle, _efi_table
fstcall [rax + EFI_BOOT_SERVICES.SetWatchdogTimer], 0, 0, 0, 0
test eax, eax
jz @f
mov rcx, msg_failed_disable_watchdog
call efi_puts
fstcall efi_puts, msg_failed_disable_watchdog
jmp $
@@:
mov rcx, EFI_LIGHTGREEN
call efi_set_text_color
mov rcx, msg_hello_k64_loader
call efi_puts
mov rcx, EFI_LIGHTGRAY
call efi_set_text_color
fstcall efi_set_text_color, EFI_LIGHTGREEN
fstcall efi_puts, msg_hello_k64_loader
fstcall efi_set_text_color, EFI_LIGHTGRAY
mov rcx, msg_firmware_vendor
call efi_puts
mov rcx, [rbx + EFI_SYSTEM_TABLE.FirmwareVendor]
call efi_puts
mov rcx, msg_newline
call efi_puts
mov rcx, msg_firmware_revision
call efi_puts
mov ecx, [rbx + EFI_SYSTEM_TABLE.FirmwareRevision]
call efi_print_hex_no_lz
mov rcx, msg_newline
call efi_puts
fstcall efi_puts, msg_firmware_vendor
fstcall efi_puts, [rbx + EFI_SYSTEM_TABLE.FirmwareVendor]
fstcall efi_puts, msg_newline
fstcall efi_puts, msg_firmware_revision
fstcall efi_print_hex_no_lz, [rbx + EFI_SYSTEM_TABLE.FirmwareRevision]
fstcall efi_puts, msg_newline
; Obtain and print uefi memory map
mov rbx, [efi_table] ;;
mov r10, [rbx + EFI_SYSTEM_TABLE.BootServices]
fstcall [r10 + EFI_BOOT_SERVICES.AllocatePages], EFI_ALLOCATE_ANY_PAGES, \
EFI_RESERVED_MEMORY_TYPE, MEMORY_MAP_SIZE/0x1000, memory_map
; mov rcx, rax
; call efi_print_hex_no_lz
; mov rcx, msg_newline
; call efi_puts
;; call halt_on_error
;; call halt_on_error ; TODO
mov rbx, [efi_table] ;;
mov r10, [rbx + EFI_SYSTEM_TABLE.BootServices]
fstcall [r10 + EFI_BOOT_SERVICES.GetMemoryMap], memory_map_size, \
[memory_map], memory_map_key, descriptor_size, descriptor_ver
;; call halt_on_error
;; call halt_on_error ; TODO
; TODO iretae through memory map and print it in e820 form
mov rcx, [memory_map]
add rcx, [descriptor_size]
add rcx, [descriptor_size]
@@ -183,31 +163,21 @@ proc main _efi_handle, _efi_table
add rcx, [descriptor_size]
add rcx, [descriptor_size]
add rcx, [descriptor_size]
mov rcx, [rcx]
call efi_print_hex_no_lz
mov rcx, msg_newline
call efi_puts
fstcall efi_print_hex_no_lz, qword [rcx]
fstcall efi_puts, msg_newline
fstcall efi_puts, msg_end_1
mov rcx, msg_end_1
call efi_puts
fstcall efi_print_hex_no_lz, 0x000A000B00C
fstcall efi_puts, msg_newline
mov rcx, 0x000A000B00C
call efi_print_hex_no_lz
mov rcx, msg_newline
call efi_puts
fstcall efi_print_hex_no_lz, 0xABCDEF133777
fstcall efi_puts, msg_newline
fstcall efi_print_hex_no_lz, 0xCAFE
fstcall efi_puts, msg_newline
mov rcx, 0xABCDEF133777
call efi_print_hex_no_lz
mov rcx, msg_newline
call efi_puts
xor rcx, rcx
call efi_print_hex_no_lz
mov rcx, msg_newline
call efi_puts
fstcall efi_putc, <0+'a'>
jmp $
endp