Add most of the BIOS assembly calls

1 files changed, 332 insertions, 4 deletions

diff --git a/src/bios_calls.s b/src/bios_calls.s
index 2268b4d..740fa02 100644
--- a/src/bios_calls.s
+++ b/src/bios_calls.s
@@ -1,9 +1,337 @@
-@ Bios division call.
-    .text           @ aka .section .text
-    .code 16        @ aka .thumb
-    .align 2        @ aka .balign 4
+@
+@ Arithmetic functions.
+@
+
+@ Division.
+    .text
+    .code 16
+    .align 2
     .global bios_div
     .thumb_func
 bios_div:
     swi     0x06
     bx      lr
+
+@ Square root.
+    .text
+    .code 16
+    .align 2
+    .global bios_sqrt
+    .thumb_func
+bios_sqrt:
+    swi     0x08
+    bx      lr
+
+@ Arc-tangent.
+    .text
+    .code 16
+    .align 2
+    .global bios_atan
+    .thumb_func
+bios_atan:
+    swi     0x09
+    bx      lr
+
+@ Arc-tangent2.
+    .text
+    .code 16
+    .align 2
+    .global bios_atan2
+    .thumb_func
+bios_atan2:
+    swi     0x0a
+    bx      lr
+
+@
+@ Rotation/Scaling.
+@
+
+@ BG Affine Set.
+    .text
+    .code 16
+    .align 2
+    .global bios_bg_affine_set
+    .thumb_func
+bios_bg_affine_set:
+    swi     0x0e
+    bx      lr
+
+@ OBJ Affine Set.
+    .text
+    .code 16
+    .align 2
+    .global bios_obj_affine_set
+    .thumb_func
+bios_obj_affine_set:
+    swi     0x0f
+    bx      lr
+
+@
+@ (De)compression.
+@
+
+@ Bit unpacking.
+    .text
+    .code 16
+    .align 2
+    .global bios_bit_unpack
+    .thumb_func
+bios_bit_unpack:
+    swi     0x10
+    bx      lr
+
+@ Huffman decompression.
+    .text
+    .code 16
+    .align 2
+    .global bios_huff_expand
+    .thumb_func
+bios_huff_expand:
+    swi     0x13
+    bx      lr
+
+@ LZ77 decompression (Fast, WRAM, 8 bit writes).
+    .text
+    .code 16
+    .align 2
+    .global bios_lz77_expand_wram
+    .thumb_func
+bios_lz77_expand_wram:
+    swi     0x11
+    bx      lr
+
+@ LZ77 decompression (Slow, VRAM, 16 bit writes).
+    .text
+    .code 16
+    .align 2
+    .global bios_lz77_expand_vram
+    .thumb_func
+bios_lz77_expand_vram:
+    swi     0x12
+    bx      lr
+
+@ Run length encoding decompression (Fast, WRAM, 8 bit writes).
+    .text
+    .code 16
+    .align 2
+    .global bios_rle_expand_wram
+    .thumb_func
+bios_rle_expand_wram:
+    swi     0x14
+    bx      lr
+
+@ Run length encoding decompression (Slow, VRAM, 16 bit writes).
+    .text
+    .code 16
+    .align 2
+    .global bios_rle_expand_vram
+    .thumb_func
+bios_rle_expand_vram:
+    swi     0x15
+    bx      lr
+
+@
+@ Memory copy.
+@
+
+@ Memcopy/memfill in 32 byte units (Fast).
+    .text
+    .code 16
+    .align 2
+    .global bios_memcopy_32
+    .thumb_func
+bios_memcopy_32:
+    swi     0x0C
+    bx      lr
+
+@ Memcopy/memfill in 4 / 2 byte units (Slow).
+    .text
+    .code 16
+    .align 2
+    .global bios_memcopy_8
+    .thumb_func
+bios_memcopy_8:
+    swi     0x0B
+    bx      lr
+
+@
+@ Sound functions.
+@
+
+@ MIDI key to frequency.
+    .text
+    .code 16
+    .align 2
+    .global bios_midi2freq
+    .thumb_func
+bios_midi2freq:
+    swi     0x1f
+    bx      lr
+
+@ Sound bias.
+    .text
+    .code 16
+    .align 2
+    .global bios_sound_bias
+    .thumb_func
+bios_sound_bias:
+    swi     0x19
+    bx      lr
+
+@ Sound channels clear.
+    .text
+    .code 16
+    .align 2
+    .global bios_sound_clear
+    .thumb_func
+bios_sound_clear:
+    swi     0x1e
+    bx      lr
+
+@ Sound driver initialization.
+    .text
+    .code 16
+    .align 2
+    .global bios_sound_init
+    .thumb_func
+bios_sound_init:
+    swi     0x1a
+    bx      lr
+
+@ Sound main function. To be called each 1/60 of a second after the sound VSync.
+    .text
+    .code 16
+    .align 2
+    .global bios_sound_main
+    .thumb_func
+bios_sound_main:
+    swi     0x1c
+    bx      lr
+
+@ Sound driver operation mode.
+    .text
+    .code 16
+    .align 2
+    .global bios_sound_mode
+    .thumb_func
+bios_sound_mode:
+    swi     0x1b
+    bx      lr
+
+@ Sound VSync. Called just after the VBlank interrupt each 1/60 of a second.
+    .text
+    .code 16
+    .align 2
+    .global bios_sound_vsync
+    .thumb_func
+bios_sound_vsync:
+    swi     0x1d
+    bx      lr
+
+@ Sound VSync off In case of issues manually call this to stop the sound.
+    .text
+    .code 16
+    .align 2
+    .global bios_sound_vsync_off
+    .thumb_func
+bios_sound_vsync_off:
+    swi     0x28
+    bx      lr
+
+@
+@ Halt/Reset functions.
+@
+
+@ Halt until interrupt request.
+    .text
+    .code 16
+    .align 2
+    .global bios_halt
+    .thumb_func
+bios_halt:
+    swi     0x02
+    bx      lr
+
+@ Halt until one of the specified interrupts occur.
+    .text
+    .code 16
+    .align 2
+    .global bios_interrupt_wait
+    .thumb_func
+bios_interrupt_wait:
+    swi     0x04
+    bx      lr
+
+@ Halt until the VBlank interrupt occurs.
+    .text
+    .code 16
+    .align 2
+    .global bios_vblank_wait
+    .thumb_func
+bios_vblank_wait:
+    swi     0x05
+    bx      lr
+
+@ Stop. Switches GBA to low power mode.
+    .text
+    .code 16
+    .align 2
+    .global bios_stop
+    .thumb_func
+bios_stop:
+    swi     0x03
+    bx      lr
+
+@ Soft reset.
+    .text
+    .code 16
+    .align 2
+    .global bios_soft_reset
+    .thumb_func
+bios_soft_reset:
+    swi     0x00
+    bx      lr
+
+@ Register RAM reset.
+    .text
+    .code 16
+    .align 2
+    .global bios_regram_reset
+    .thumb_func
+bios_regram_reset:
+    swi     0x01
+    bx      lr
+
+@ Hard reset.
+    .text
+    .code 16
+    .align 2
+    .global bios_hard_reset
+    .thumb_func
+bios_hard_reset:
+    swi     0x26
+    bx      lr
+
+@
+@ Misc functions.
+@
+
+@ BIOS checksum.
+    .text
+    .code 16
+    .align 2
+    .global bios_bios_checksum
+    .thumb_func
+bios_bios_checksum:
+    swi     0x0d
+    bx      lr
+
+@ MultiBoot.
+    .text
+    .code 16
+    .align 2
+    .global bios_multiboot
+    .thumb_func
+bios_multiboot:
+    swi     0x25
+    bx      lr