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start work on ewram init

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This commit is contained in:
DizzyEggg
2024-12-15 12:35:09 +01:00
parent 1506b099e8
commit ea779d534f
6 changed files with 71 additions and 66 deletions
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2
data/data_8270000.s
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@@ -4,8 +4,6 @@
gUnknown_8270000: @ 8270000
@ replacing .incbin "baserom.gba", 0x00270000, 0x2724
.byte 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00
.byte 0x04, 0x00, 0x07, 0x00
.byte 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00

1
include/gba/defines.h
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@@ -9,6 +9,7 @@
#define IWRAM_DATA __attribute__((section("iwram_data")))
#define EWRAM_DATA __attribute__((section("ewram_data")))
#define EWRAM_DATA_2 __attribute__((section("ewram_data_2")))
#define EWRAM_INIT __attribute__((section("ewram_init")))
#define UNUSED __attribute__((unused))
#define NAKED __attribute__((naked))

109
ld_script.txt
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@@ -3,10 +3,17 @@ ENTRY(Start)
gNumMusicPlayers = 8;
gMaxLines = 0;
SECTIONS {
. = 0x2000000;
MEMORY
{
EWRAM (rwx) : ORIGIN = 0x2000000, LENGTH = 256K
IWRAM (rwx) : ORIGIN = 0x3000000, LENGTH = 32K
ROM (rx) : ORIGIN = 0x8000000, LENGTH = 32M
}
ewram (NOLOAD) :
SECTIONS {
ewram 0x2000000 (NOLOAD) :
ALIGN(4)
{
ewram_start = .;
@@ -17,24 +24,20 @@ SECTIONS {
*libgcc.a:dp-bit.o(.bss);
*libc.a:syscalls.o(.bss);
. = ALIGN(16);
INCLUDE "sym_ewram2.ld"
*libc.a:impure.o(.data);
*libc.a:locale.o(.data);
*libc.a:mallocr.o(.data);
ewram2_end = .;
. = 0x40000;
}
src/m4a.o(ewram_data_2);
src/agb_flash.o(ewram_data_2);
*libc.a:sbrkr.o(COMMON);
} > EWRAM
. = 0x3000000;
iwram (NOLOAD) :
iwram 0x3000000 (NOLOAD) :
ALIGN(4)
{
iwram_start = .;
INCLUDE "sym_iwram.ld"
. = 0x8000;
}
} > IWRAM
/* BEGIN ROM DATA */
. = 0x8000000;
.text :
@@ -407,7 +410,7 @@ SECTIONS {
*libc.a:lseekr.o(.text);
*libc.a:readr.o(.text);
*libgcc.a:_udivsi3.o(.text);
} =0
} > ROM =0
.rodata :
ALIGN(4)
@@ -716,9 +719,35 @@ SECTIONS {
*libc.a:locale.o(.rodata);
*libc.a:mprec.o(.rodata);
*libc.a:syscalls.o(.rodata);
. = ALIGN(4);
data/data_8270000.o(.rodata);
} =0
. = ALIGN(4);
} > ROM =0
ewram_init :
ALIGN(4)
{
ewramClearEnd = .;
ewramClearEnd2 = .;
src/code_2.o(ewram_init);
} > EWRAM AT>ROM
EWRAM_INIT_ROM_START = LOADADDR(ewram_init);
ewram_init_temp :
ALIGN(4)
{
data/data_8270000.o(.rodata);
} > ROM =0
ewram_temp (NOLOAD) :
ALIGN(4)
{
INCLUDE "sym_ewram2.ld"
*libc.a:impure.o(.data);
*libc.a:locale.o(.data);
*libc.a:mallocr.o(.data);
ewram2_end = .;
} > EWRAM
unk_code_section :
ALIGN(4)
@@ -728,73 +757,65 @@ SECTIONS {
src/code_8272724.o(.text);
asm/code_8272724.o(.text);
unk_code_end = .;
}
} > ROM =0
unk_code_section_size = (unk_code_end - unk_code);
unk_code_ram_end = unk_code_ram + unk_code_section_size;
end = unk_code_ram_end;
. = 0x8300000;
unk_data :
unk_data 0x8300000 :
ALIGN(4)
{
data/unk_data.o(.rodata);
}
} > ROM =0
. = 0x8300500;
system_sbin_section :
system_sbin_section 0x8300500 :
ALIGN(4)
{
data/system_sbin.o(.rodata);
}
} > ROM =0
. = 0x8380000;
titlemenu_sbin_section :
titlemenu_sbin_section 0x8380000 :
ALIGN(4)
{
data/titlemenu_sbin.o(.rodata);
}
} > ROM =0
. = 0x83B0000;
dungeon_sbin_section :
dungeon_sbin_section 0x83B0000 :
ALIGN(4)
{
data/dungeon_sbin.o(.rodata);
}
} > ROM =0
. = 0x8510000;
monster_sbin_section :
monster_sbin_section 0x8510000 :
ALIGN(4)
{
data/monster_sbin.o(.rodata);
}
} > ROM =0
. = 0x9740000;
effect_sbin_section :
effect_sbin_section 0x9740000 :
ALIGN(4)
{
data/effect_sbin.o(.rodata);
}
} > ROM =0
. = 0x9890000;
ground_sbin_section :
ground_sbin_section 0x9890000 :
ALIGN(4)
{
data/ground_sbin.o(.rodata);
}
} > ROM =0
. = 0x9E60000;
ornament_sbin_section :
ornament_sbin_section 0x9E60000 :
ALIGN(4)
{
data/ornament_sbin.o(.rodata);
}
} > ROM =0
sound_data :
ALIGN(4)
{
data/sound_data.o(.rodata);
}
} > ROM =0
/* DWARF 2 sections */
.debug_aranges 0 : { *(.debug_aranges) }

5
src/code_2.c
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@@ -38,10 +38,11 @@ extern void LoadTitleScreen(void);
extern void nullsub_33(void);
extern u32 sub_80009D0(u32);
extern u32 gUnknown_203B03C;
extern u16 gUnknown_2026E4E;
extern s32 gTitleBrightness;
extern OpenedFile *gTitlePaletteFile;
EWRAM_INIT OpenedFile *gTitlePaletteFile = NULL;
EWRAM_INIT u32 gUnknown_203B03C = 0;
extern char gPMDBuildVersion[];

4
src/main.c
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@@ -28,7 +28,7 @@ extern u8 unk_code_ram[];
extern u8 unk_code_ram_end[];
// data_8270000.s
extern const u8 gUnknown_8270000[];
extern const u8 EWRAM_INIT_ROM_START[];
UNUSED static const char sStringRomUserData[] = "PKD ROM USER DATA 000000";
@@ -50,7 +50,7 @@ void AgbMain(void)
DmaStop(3);
if (ewram2_end - ewramClearEnd > 0)
CpuCopy32(gUnknown_8270000, ewramClearEnd, ewram2_end - ewramClearEnd);
CpuCopy32(EWRAM_INIT_ROM_START, ewramClearEnd, ewram2_end - ewramClearEnd);
if (ewramClearEnd2 - ewram_start > 0) {
memset(value, 0, 4);

16
sym_ewram2.txt
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@@ -1,23 +1,9 @@
.align 2
.include "src/m4a.o"
.include "src/agb_flash.o"
errno: /* 203B034 */
.space 0x4
ewramClearEnd:
ewramClearEnd2:
gTitlePaletteFile: /* 203B038 (GameLoop) */
.space 0x4
gUnknown_203B03C: /* 203B03C */
.space 0x4
gPersonalityRelated_203B040: /* 203B040 */
.space 0x30
.include "src/other_random.o"
.space 0x2
.include "src/sprite.o"
gUnknown_203B078: /* 203B078 (sub_80057E8 - SaveUnkTextStructAndXXX_8006438) */
@@ -44,8 +30,6 @@ gUnknown_203B090: /* 203B090 (InitGraphics) */
.include "src/main.o"
.include "src/reg_control.o"
.include "src/flash.o"
.space 0x3
.include "src/code_800C9CC.o"
gUnknown_203B0BE: /* 203B0BE (sub_800CDA8) */