Merge pull request #122 from red031000/master

OS_irqHandler itcm
2026-09-30 12:26:48 -05:00 · 2020-05-28 18:01:07 -04:00
parent 3543d7e3d6 29ef3ee6e4
commit 44da9faaaa
9 changed files with 134 additions and 128 deletions
--- a/arm9/arm9.lcf
+++ b/arm9/arm9.lcf
@@ -963,6 +963,7 @@ SECTIONS {
 	{
 		. = ALIGN(32);
 		SDK_AUTOLOAD.ITCM.START = .;
+		OS_irqHandler.o (.itcm)
 		arm9_itcm.o (.text)
 		. = ALIGN(32);
 		SDK_AUTOLOAD.ITCM.END = .;
--- a/arm9/asm/CP_context.s
+++ b/arm9/asm/CP_context.s
@@ -22,8 +22,8 @@ CP_SaveContext: ; 0x020D3648
 	.balign 4
 _020D3684: .word 0x04000290

-	arm_func_start CP_RestoreContext
-CP_RestoreContext: ; 0x020D3688
+	arm_func_start CPi_RestoreContext
+CPi_RestoreContext: ; 0x020D3688
 	stmdb sp!, {r4}
 	ldr r1, _020D36C0 ; =0x04000290
 	ldmia r0, {r2-r4,r12}
--- a/arm9/asm/OS_context.s
+++ b/arm9/asm/OS_context.s
@@ -60,7 +60,7 @@ _020CBB78: .word CP_SaveContext
 OS_LoadContext: ; 0x020CBB7C
 	stmdb sp!, {r0,lr}
 	add r0, r0, #0x48
-	ldr r1, _020CBBBC ; =CP_RestoreContext
+	ldr r1, _020CBBBC ; =CPi_RestoreContext
 	blx r1
 	ldmia sp!, {r0,lr}
 	mrs r1, cpsr
@@ -75,4 +75,4 @@ OS_LoadContext: ; 0x020CBB7C
 	mov r0, r0
 	subs pc, lr, #0x4
 	.balign 4
-_020CBBBC: .word CP_RestoreContext
+_020CBBBC: .word CPi_RestoreContext
--- a/arm9/asm/arm9_itcm.s
+++ b/arm9/asm/arm9_itcm.s
@@ -3,129 +3,6 @@
 	.section .text

 	; OS
-	arm_func_start OS_IrqHandler
-OS_IrqHandler: ; 0x01FF8000
-	stmfd sp!, {lr}
-	mov ip, #0x04000000
-	add ip, ip, #0x210
-	ldr r1, [ip, #-8]
-	cmp r1, #0
-	ldmeqfd sp!, {pc}
-	ldmia ip, {r1, r2}
-	ands r1, r1, r2
-	ldmeqfd sp!, {pc}
-	mov r3, #0x80000000
-_01FF8028:
-	clz r0, r1
-	bics r1, r1, r3, lsr r0
-	bne _01FF8028
-	mov r1, r3, lsr r0
-	str r1, [ip, #0x4]
-	rsbs r0, r0, #0x1f
-	ldr r1, _01FF8050 ; =0x027E0000
-	ldr r0, [r1, r0, lsl #2]
-	ldr lr, _01FF8054 ; =0x01FF70B8
-	bx r0
-_01FF8050: .word OS_IRQTable
-_01FF8054: .word OS_IrqHandler_ThreadSwitch
-
-	arm_func_start OS_IrqHandler_ThreadSwitch
-OS_IrqHandler_ThreadSwitch: ; 01FF8058
-	ldr ip, _01FF81A4
-	mov r3, #0x0
-	ldr ip, [ip]
-	mov r2, #0x1
-	cmp ip, #0x0
-	beq _01FF80A8
-_01FF8070:
-	str r2, [ip, #0x64]
-	str r3, [ip, #0x78]
-	str r3, [ip, #0x7c]
-	ldr r0, [ip, #0x80]
-	str r3, [ip, #0x80]
-	mov ip, r0
-	cmp ip, #0x0
-	bne _01FF8070
-	ldr ip, _01FF81A4
-	str r3, [ip]
-	str r3, [ip, #0x4]
-	ldr ip, _01FF81A8
-	mov r1, #0x1
-	strh r1, [ip]
-_01FF80A8:
-	ldr ip, _01FF81A8
-	ldrh r1, [ip]
-	cmp r1, #0x0
-	ldreq pc, [sp], #0x4
-	mov r1, #0x0
-	strh r1, [ip]
-	mov r3, #0xd2
-	msr CPSR_c, r3
-	add r2, ip, #0x8
-	ldr r1, [r2]
-_01FF80D0:
-	cmp r1, #0x0
-	ldrneh r0, [r1, #0x64]
-	cmpne r0, #0x1
-	ldrne r1, [r1, #0x68]
-	bne _01FF80D0
-	cmp r1, #0x0
-	bne _01FF80F8
-_01FF80EC:
-	mov r3, #0x92
-	msr CPSR_c, r3
-	ldr pc, [sp], #0x4
-_01FF80F8:
-	ldr r0, [ip, #0x4]
-	cmp r1, r0
-	beq _01FF80EC
-	ldr r3, [ip, #0xC]
-	cmp r3, #0x0
-	beq _01FF8120
-	stmdb sp!, {r0, r1, ip}
-	mov lr, pc
-	bx r3
-	ldmia sp!, {r0, r1, ip}
-_01FF8120:
-	str r1, [ip, #0x4]
-	mrs r2, SPSR
-	str r2, [r0, #0x0]!
-	stmdb sp!, {r0, r1}
-	add r0, r0, #0x0
-	add r0, r0, #0x48
-	ldr r1, _01FF81AC
-	blx r1
-	ldmia sp!, {r0, r1}
-	ldmib sp!, {r2, r3}
-	stmib r0!, {r2, r3}
-	ldmib sp!, {r2, r3, ip, lr}
-	stmib r0!, {r2, r3, r4, r5, r6, r7, r8, r9, sl, fp, ip, sp, lr}^
-	stmib r0!, {lr}
-	mov r3, #0xd3
-	msr CPSR_c, r3
-	stmib r0!, {sp}
-	stmfd sp!, {r1}
-	add r0, r1, #0x0
-	add r0, r0, #0x48
-	ldr r1, _01FF81B0
-	blx r1
-	ldmfd sp!, {r1}
-	ldr sp, [r1, #0x44]
-	mov r3, #0xd2
-	msr CPSR_c, r3
-	ldr r2, [r1, #0x0]!
-	msr SPSR_fc, r2
-	ldr lr, [r1, #0x40]
-	ldmib r1!, {r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, sl, fp, ip, sp, lr}^
-	nop
-	stmda sp!, {r0, r1, r2, r3, ip, lr}
-	ldmfd sp!, {pc}
-_01FF81A4: .word OSi_IrqThreadQueue
-_01FF81A8: .word OSi_ThreadInfo
-_01FF81AC: .word CP_SaveContext
-_01FF81B0: .word CP_RestoreContext
-
-	.section .text
 	arm_func_start OSi_DoBoot
 OSi_DoBoot: ; 0x01FF81B4
 	mov ip, #0x04000000
--- a/arm9/global.inc
+++ b/arm9/global.inc
@@ -93,7 +93,7 @@
 .extern CPSi_sha1_init
 .extern CPSi_sha1_result
 .extern CPSi_sha1_result_prng
-.extern CP_RestoreContext
+.extern CPi_RestoreContext
 .extern CP_SaveContext
 .extern CTRDG_CpuCopy16
 .extern CTRDG_CpuCopy32
--- a/arm9/lib/include/CP_context.h
+++ b/arm9/lib/include/CP_context.h
@@ -15,4 +15,7 @@ typedef struct CPContext {
    u16 sqrt_mode;
 } CPContext;

+void CP_SaveContext(CPContext *context);
+void CPi_RestoreContext(const CPContext* context);
+
 #endif //POKEDIAMOND_CP_CONTEXT_H
--- a/arm9/lib/include/OS_irqHandler.h
+++ b/arm9/lib/include/OS_irqHandler.h
@@ -14,6 +14,8 @@ static inline OSIrqMask OS_GetIrqCheckFlag(void)
    return *(OSIrqMask *)HW_INTR_CHECK_BUF;
 }

+void OS_IrqHandler(void);
+void OS_IrqHandler_ThreadSwitch(void);
 void OS_WaitIrq(BOOL param1, u32 param2);

 #endif //POKEDIAMOND_OS_IRQHANDLER_H
--- a/arm9/lib/include/OS_thread.h
+++ b/arm9/lib/include/OS_thread.h
@@ -87,6 +87,8 @@ struct _OSThread
    u32 systemErrno;
 };

+extern OSThreadInfo OSi_ThreadInfo;
+
 void OS_SleepThread(OSThreadQueue * queue);
 void OS_WakeupThread(OSThreadQueue * queue);

--- a/arm9/lib/src/OS_irqHandler.c
+++ b/arm9/lib/src/OS_irqHandler.c
@@ -3,11 +3,132 @@
 #include "OS_system.h"
 #include "OS_thread.h"
 #include "sections.h"
+#include "CP_context.h"

 #pragma section DTCM begin
 OSThreadQueue OSi_IrqThreadQueue = { NULL, NULL };
 #pragma section DTCM end

+#pragma section ITCM begin
+ARM_FUNC asm void OS_IrqHandler(void)
+{
+    stmfd sp!, {lr}
+    mov ip, #0x04000000
+    add ip, ip, #0x210
+    ldr r1, [ip, #-8]
+    cmp r1, #0
+    ldmeqfd sp!, {pc}
+    ldmia ip, {r1, r2}
+    ands r1, r1, r2
+    ldmeqfd sp!, {pc}
+    mov r3, #0x80000000
+_01FF8028:
+    clz r0, r1
+    bics r1, r1, r3, lsr r0
+    bne _01FF8028
+    mov r1, r3, lsr r0
+    str r1, [ip, #0x4]
+    rsbs r0, r0, #0x1f
+    ldr r1, =OS_IRQTable
+    ldr r0, [r1, r0, lsl #2]
+    ldr lr, =OS_IrqHandler_ThreadSwitch
+    bx r0
+}
+
+ARM_FUNC asm void OS_IrqHandler_ThreadSwitch(void)
+{
+    ldr ip, =OSi_IrqThreadQueue
+    mov r3, #0x0
+    ldr ip, [ip]
+    mov r2, #0x1
+    cmp ip, #0x0
+    beq _01FF80A8
+_01FF8070:
+    str r2, [ip, #0x64]
+    str r3, [ip, #0x78]
+    str r3, [ip, #0x7c]
+    ldr r0, [ip, #0x80]
+    str r3, [ip, #0x80]
+    mov ip, r0
+    cmp ip, #0x0
+bne _01FF8070
+    ldr ip, =OSi_IrqThreadQueue
+    str r3, [ip]
+    str r3, [ip, #0x4]
+    ldr ip, =OSi_ThreadInfo
+    mov r1, #0x1
+    strh r1, [ip]
+_01FF80A8:
+    ldr ip, =OSi_ThreadInfo
+    ldrh r1, [ip]
+    cmp r1, #0x0
+    ldreq pc, [sp], #0x4
+    mov r1, #0x0
+    strh r1, [ip]
+    mov r3, #0xd2
+    msr CPSR_c, r3
+    add r2, ip, #0x8
+    ldr r1, [r2]
+_01FF80D0:
+    cmp r1, #0x0
+    ldrneh r0, [r1, #0x64]
+    cmpne r0, #0x1
+    ldrne r1, [r1, #0x68]
+    bne _01FF80D0
+    cmp r1, #0x0
+    bne _01FF80F8
+_01FF80EC:
+    mov r3, #0x92
+    msr CPSR_c, r3
+    ldr pc, [sp], #0x4
+_01FF80F8:
+    ldr r0, [ip, #0x4]
+    cmp r1, r0
+    beq _01FF80EC
+    ldr r3, [ip, #0xC]
+    cmp r3, #0x0
+    beq _01FF8120
+    stmdb sp!, {r0, r1, ip}
+    mov lr, pc
+    bx r3
+    ldmia sp!, {r0, r1, ip}
+_01FF8120:
+    str r1, [ip, #0x4]
+    mrs r2, SPSR
+    str r2, [r0, #0x0]!
+    stmdb sp!, {r0, r1}
+    add r0, r0, #0x0
+    add r0, r0, #0x48
+    ldr r1, =CP_SaveContext
+    blx r1
+    ldmia sp!, {r0, r1}
+    ldmib sp!, {r2, r3}
+    stmib r0!, {r2, r3}
+    ldmib sp!, {r2, r3, ip, lr}
+    stmib r0!, {r2-r14}^
+    stmib r0!, {lr}
+    mov r3, #0xd3
+    msr CPSR_c, r3
+    stmib r0!, {sp}
+    stmfd sp!, {r1}
+    add r0, r1, #0x0
+    add r0, r0, #0x48
+    ldr r1, =CPi_RestoreContext
+    blx r1
+    ldmfd sp!, {r1}
+    ldr sp, [r1, #0x44]
+    mov r3, #0xd2
+    msr CPSR_c, r3
+    ldr r2, [r1, #0x0]!
+    msr SPSR_fc, r2
+    ldr lr, [r1, #0x40]
+    ldmib r1!, {r0-r14}^
+    nop
+    stmda sp!, {r0, r1, r2, r3, ip, lr}
+    ldmfd sp!, {pc}
+}
+#pragma section ITCM end
+
 ARM_FUNC void OS_WaitIrq(BOOL clear, OSIrqMask irqFlags)
 {
    OSIntrMode lastIntrMode = OS_DisableInterrupts();