mirror of
https://github.com/Ed94/pikuma_ps1.git
synced 2026-06-01 18:41:13 -07:00
171 lines
7.6 KiB
ArmAsm
171 lines
7.6 KiB
ArmAsm
// .include "./toolchain/pcsx-redux/src/mips/common/crt0/crt0.s"
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.include "./asmdd/dsl.s"
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.include "./asmdd/math.s"
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.include "./asmdd/io.s"
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.include "./asmdd/gp.s"
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# DrawEnv_Packed { U32 tag; U32 code[15]; }
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.equ DrawEnv_Packed_tag, 0
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.equ DrawEnv_Packed_code, DrawEnv_Packed_tag + U32
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.equ DrawEnv_Packed, 64
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# DrawEnv { Rect_S16 clip; Vec_2S16 ofs; Rect_S16 tw; U16 tpage; U8 dtd; U8 dfe; U8 tme; U8 r0,g0,b0; DR_ENV dr_env; }
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.equ DrawEnv_clip_area, /* 0 */ Rect_S16 * 0
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.equ DrawEnv_drawing_offset, /* 8 */ A2_S16 * 0 + Rect_S16
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.equ DrawEnv_texture_window, /* 12 */ Rect_S16 * 0 + A2_S16 + DrawEnv_drawing_offset
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.equ DrawEnv_texture_page, /* 20 */ S16 * 0 + Rect_S16 + DrawEnv_texture_window
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.equ DrawEnv_flag_dither, /* 22 */ byte * 0 + S16 + DrawEnv_texture_page
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.equ DrawEnv_flag_draw_on_display, /* 23 */ byte * 0 + byte + DrawEnv_flag_dither
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.equ DrawEnv_enable_auto_clear, /* 24 */ byte * 0 + byte + DrawEnv_flag_draw_on_display
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.equ DrawEnv_initial_bg_color, /* 25 */ RGB8 * 0 + byte + DrawEnv_enable_auto_clear
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.equ DrawEnv_dr_env, /* 28 */ DrawEnv_Packed * 0 + RGB8 + DrawEnv_initial_bg_color
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.equ DrawEnv, /* 92 */ DrawEnv_dr_env + DrawEnv_Packed
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# DisplayEnv { Rect_S16 disp; Rect_S16 screen; U8 isinter; U8 isrgb24; U8 pad[2]; }
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.equ DisplayEnv_display_area, Rect_S16 * 0
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.equ DisplayEnv_screen, Rect_S16 * 0 + Rect_S16 + DisplayEnv_display_area
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.equ DisplayEnv_vinterlace, byte * 0 + Rect_S16 + DisplayEnv_screen
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.equ DisplayEnv_color24, byte * 0 + byte + DisplayEnv_vinterlace
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.equ DisplayEnv_pad0, byte * 0 + byte + DisplayEnv_color24
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.equ DisplayEnv_pad1, byte * 0 + byte + DisplayEnv_pad0
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.equ DisplayEnv, DisplayEnv_pad1 + byte
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# DoubleBuffer { DrawEnv draw[2]; DisplayEnv display[2]; }
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.equ DoubleBuffer_draw, 0
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.equ DoubleBuffer_draw_0, (DrawEnv * 0)
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.equ DoubleBuffer_draw_1, (DrawEnv * 1)
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.equ DoubleBuffer_display, (DrawEnv * 2)
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.equ DoubleBuffer_display_0, (DisplayEnv * 0) + DoubleBuffer_display
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.equ DoubleBuffer_display_1, (DisplayEnv * 1) + DoubleBuffer_display
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.equ DoubleBuffer, (DisplayEnv * 2) + DoubleBuffer_display
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# Screen Constants
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.equ ScreenRes_X, 320
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.equ ScreenRes_Y, 240
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.equ ScreenRes_CenterX, (ScreenRes_X >> 1)
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.equ ScreenRes_CenterY, (ScreenRes_Y >> 1)
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.equ SMemory_screen_buf, DoubleBuffer * 0
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.equ SMemory_active_screen_buf, S16 * 0 + DoubleBuffer
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.equ CF_Shadow, 16
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.extern ResetGraph
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.equ ResetGraph_mode, rarg_0
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.extern SetDispMask
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.equ SetDispMask_mask, rarg_0
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.extern PutDispEnv
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.extern PutDrawEnv
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.equ PutDispEnv_env, rarg_0
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.equ PutDrawEnv_env, rarg_0
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.extern SetDefDispEnv
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.equ SetDefDispEnv_env, rarg_0
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.equ SetDefDispEnv_x, rarg_1
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.equ SetDefDispEnv_y, rarg_2
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.equ SetDefDispEnv_w, rarg_3
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.equ SetDefDispEnv_h, CF_Shadow
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.set SetDefDispEnv_sp_size, CF_Shadow + S32
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.extern SetDefDrawEnv
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.equ SetDefDrawEnv_env, rarg_0
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.equ SetDefDrawEnv_x, rarg_1
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.equ SetDefDrawEnv_y, rarg_2
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.equ SetDefDrawEnv_w, rarg_3
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.equ SetDefDrawEnv_h, CF_Shadow
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.set SetDefDrawEnv_sp_size, CF_Shadow + S32
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.extern SetGeomOffset
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.equ SetGeomOffset_x, rarg_0
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.equ SetGeomOffset_y, rarg_1
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.extern SetGeomScreen
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.equ SetGeomScreen_h, rarg_0
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.global gp_screen_init_asm
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.type gp_screen_init_asm, @function
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gp_screen_init_asm:
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.equiv rio_offset, rtmp_0
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load_imm rtmp_0, IO_BASE_ADDR
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#define gp0 gpio_port0(rio_offset)
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#define gp1 gpio_port1(rio_offset)
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def_cf_sp_size 0x18; // Should be enough for all calls within this proc, for some reason SetDefDispEnv needs the offset to be CF_Shadow..
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stack_alloc cf_ssize
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store_word rret_addr, 0($sp)
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// Note(Ed): Cannot be used psyq manages things related to vblank and other things so the api must be called instead
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// gcmd_push gp1, rtmp_1, gp_Reset // ResetGraph(0)
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// gcmd_push gp1, rtmp_1, gp_DisplayEnabled // SetDispMask(1)
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load_imm ResetGraph_mode, gp_Reset; jump_nlink ResetGraph
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load_imm SetDispMask_mask, 1; jump_nlink SetDispMask
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// First buffer area
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load_addr rtmp_0, static_mem; add_ui SetDefDispEnv_env, rtmp_0, SMemory_screen_buf + DoubleBuffer_display_0
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move SetDefDispEnv_x, $zero
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move SetDefDispEnv_y, $zero
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load_imm SetDefDispEnv_w, ScreenRes_X
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load_imm rtmp_0, ScreenRes_Y; store_word rtmp_0, SetDefDispEnv_h($sp)
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jump_nlink SetDefDispEnv
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load_addr rtmp_0, static_mem; add_ui SetDefDrawEnv_env, rtmp_0, SMemory_screen_buf + DoubleBuffer_draw_0
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move SetDefDrawEnv_x, $zero
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load_imm SetDefDrawEnv_y, ScreenRes_Y
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load_imm SetDefDrawEnv_w, ScreenRes_X
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load_imm rtmp_0, ScreenRes_Y; store_word rtmp_0, SetDefDrawEnv_h($sp)
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jump_nlink SetDefDrawEnv
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// Second buffer area
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load_addr rtmp_0, static_mem; add_ui SetDefDispEnv_env, rtmp_0, SMemory_screen_buf + DoubleBuffer_display_1
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move SetDefDispEnv_x, $zero
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load_imm SetDefDispEnv_y, ScreenRes_Y
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load_imm SetDefDispEnv_w, ScreenRes_X
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load_imm rtmp_0, ScreenRes_Y; store_word rtmp_0, SetDefDispEnv_h($sp)
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jump_nlink SetDefDispEnv
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load_addr rtmp_0, static_mem; add_ui SetDefDrawEnv_env, rtmp_0, SMemory_screen_buf + DoubleBuffer_draw_1
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move SetDefDrawEnv_x, $zero
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move SetDefDrawEnv_y, $zero
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load_imm SetDefDrawEnv_w, ScreenRes_X
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load_imm rtmp_0, ScreenRes_Y; store_word rtmp_0, SetDefDrawEnv_h($sp)
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jump_nlink SetDefDrawEnv
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// Set the back/drawing buffer
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load_imm rtmp_1, true
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load_addr rtmp_0, static_mem; // At SMemory_screen_buf
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store_word rtmp_1, DoubleBuffer_draw_0 + DrawEnv_enable_auto_clear(rtmp_0)
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store_word rtmp_1, DoubleBuffer_draw_1 + DrawEnv_enable_auto_clear(rtmp_0)
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// Set background clear color
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move rtmp_1, $zero; load_imm rtmp_2, 63; load_imm rtmp_3, 127
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// 63, 0, 127
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store_byte rtmp_2, DoubleBuffer_draw_0 + DrawEnv_initial_bg_color + RGB8_r(rtmp_0)
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store_byte rtmp_1, DoubleBuffer_draw_0 + DrawEnv_initial_bg_color + RGB8_g(rtmp_0)
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store_byte rtmp_3, DoubleBuffer_draw_0 + DrawEnv_initial_bg_color + RGB8_b(rtmp_0)
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// 127, 63, 0
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store_byte rtmp_3, DoubleBuffer_draw_1 + DrawEnv_initial_bg_color + RGB8_r(rtmp_0)
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store_byte rtmp_2, DoubleBuffer_draw_1 + DrawEnv_initial_bg_color + RGB8_g(rtmp_0)
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store_byte rtmp_1, DoubleBuffer_draw_1 + DrawEnv_initial_bg_color + RGB8_b(rtmp_0)
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load_addr rtmp_0, static_mem; store_word rtmp_1, SMemory_active_screen_buf(rtmp_0)
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load_addr rtmp_1, static_mem; load_half rtmp_1, SMemory_active_screen_buf(rtmp_1); // rtmp_1 = active_screen_buffer
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load_imm rtmp_2, DisplayEnv; mult_u rtmp_1, rtmp_2; mov_from_low rtmp_2 // rtmp_2 = DisplayEnv.type_size * active_screen_Buffer (rtmp_1)
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add_ui rtmp_2, rtmp_2, DoubleBuffer_display // rtmp_2 += DoubleBuffer.display
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load_addr rtmp_0, static_mem; add_u PutDispEnv_env, rtmp_0, rtmp_2 // rarg_0 = rtmp_0 (screen_buffer) + rtmp_2 (.display[active_screen-buffer])
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jump_nlink PutDispEnv
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load_addr rtmp_1, static_mem; load_half rtmp_1, SMemory_active_screen_buf(rtmp_1);
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load_imm rtmp_2, DrawEnv; mult_u rtmp_1, rtmp_2; mov_from_low rtmp_2;
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add_ui rtmp_2, rtmp_2, DoubleBuffer_draw
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load_addr rtmp_0, static_mem; add_u PutDrawEnv_env, rtmp_0, rtmp_2
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jump_nlink PutDrawEnv
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// Initialize and setup the GTE geometry offsets
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jump_nlink InitGeom
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load_imm SetGeomOffset_x, ScreenRes_CenterX
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load_imm SetGeomOffset_y, ScreenRes_CenterY
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jump_nlink SetGeomOffset
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load_imm SetGeomScreen_h, ScreenRes_CenterX
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jump_nlink SetGeomScreen
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load_word rret_addr, 0($sp)
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stack_release cf_ssize
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jump_reg rret_addr;
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.Lgp_screen_init_end:
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.size gp_screen_init_asm, . - gp_screen_init_asm
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