From 2d7c0a36fee022e35fd32c042922516fd858510d Mon Sep 17 00:00:00 2001
From: Morten Delenk <morten@dark32.cf>
Date: Sat, 29 Jul 2017 12:06:30 +0100
Subject: [PATCH] added more files

---
 .gitignore                     |   4 --
 kernel/arch/arm/include/regs.h |  21 ++++++++
 kernel/arch/arm/int.s          |  89 +++++++++++++++++++++++++++++++++
 kernel/mmaps/3ds9.mh           |   5 ++
 kernel/mmaps/3ds9.mmap         | Bin 0 -> 129 bytes
 5 files changed, 115 insertions(+), 4 deletions(-)
 create mode 100644 kernel/arch/arm/include/regs.h
 create mode 100644 kernel/arch/arm/int.s
 create mode 100644 kernel/mmaps/3ds9.mh
 create mode 100644 kernel/mmaps/3ds9.mmap

diff --git a/.gitignore b/.gitignore
index 8798039..df226d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,8 +10,4 @@ iso/kernel
 *.firm
 html/
 latex/
-int.s
-regs.h
 out/
-*.mmap
-*.mh
diff --git a/kernel/arch/arm/include/regs.h b/kernel/arch/arm/include/regs.h
new file mode 100644
index 0000000..08a6e90
--- /dev/null
+++ b/kernel/arch/arm/include/regs.h
@@ -0,0 +1,21 @@
+#include <stdint.h>
+struct cpu_state {
+    uint32_t cpsr;
+    uint32_t sp;
+    uint32_t lr;
+    uint32_t returnAddr;
+    uint32_t r0;
+    uint32_t r1;
+    uint32_t r2;
+    uint32_t r3;
+    uint32_t r4;
+    uint32_t r5;
+    uint32_t r6;
+    uint32_t r7;
+    uint32_t r8;
+    uint32_t r9;
+    uint32_t r10;
+    uint32_t r11;
+    uint32_t r12;
+    uint32_t pc;
+};
\ No newline at end of file
diff --git a/kernel/arch/arm/int.s b/kernel/arch/arm/int.s
new file mode 100644
index 0000000..0f17f0b
--- /dev/null
+++ b/kernel/arch/arm/int.s
@@ -0,0 +1,89 @@
+.arm
+.fpu vfpv2
+.section .bss
+.space 4096
+exception_stack:
+.section .data
+.space 4
+oldsp:
+.section .text
+.global branch_macro
+branch_macro:
+    ldr pc, [pc, #-4] //Load the next word into PC
+.macro interrupt_handler intid
+    push {r0-r12,lr} //Push registers
+
+    //Get previous sp and lr
+    mrs r1, cpsr //Current mode
+    mrs r0, spsr //Previous mode
+    orr r0, #0xC0 //Disable interrupts in the previous mode
+    bic r0, #0x20 //enable ARM mode in there
+
+    //If the mode is user, switch to system mode
+    and r2, r0, #0x1F
+    cmp r2, #0x10
+    bne 1f
+    orr r0, #0x1F
+1:
+    //Change mode
+    msr cpsr, r0
+    mov r2, sp
+    mov r3, lr
+    //Switch back
+    msr cpsr, r1
+    mrs r0, spsr
+
+    //Push those registers
+    push {r0, r2, r3, lr}
+
+    //Set argument 1
+    ldr r0, =\intid
+
+    //Jump to generic handler
+
+    bl intr_common_handler
+
+    //pop the special registers
+    pop {r0, r3, r4, lr}
+    msr spsr, r0
+    tst r0, #0x20 //Is code ARM or thumb?
+    beq 2f
+    orr lr, lr, #1 //Enable thumb mode on return#
+2:
+    str lr, [sp, #0x34] //Set correct lr
+
+    ldmfd sp!, {r0-r12, pc}^ //Return back to original mode
+.endm
+.global data_abort
+data_abort:
+    interrupt_handler 0
+.global fast_irq
+fast_irq:
+    interrupt_handler 1
+.global normal_irq
+normal_irq:
+    interrupt_handler 2
+.global prefetch_abort
+prefetch_abort:
+    interrupt_handler 3
+.global svc_call
+svc_call:
+    interrupt_handler 4
+.global undefined_op
+undefined_op:
+    interrupt_handler 5
+
+.extern handleINT
+intr_common_handler:
+    mov r1, sp
+    push {lr}
+    blx handleINT
+    pop {lr}
+    mov sp, r0
+    bx lr
+.global panic
+.extern panic2
+panic:
+    push {r0-r12,lr}
+    mov r1, sp
+    b panic
diff --git a/kernel/mmaps/3ds9.mh b/kernel/mmaps/3ds9.mh
new file mode 100644
index 0000000..2b0660e
--- /dev/null
+++ b/kernel/mmaps/3ds9.mh
@@ -0,0 +1,5 @@
+#pragma once
+#include <stdint.h>
+uint8_t mmap[] = {
+0x4d, 0x4d, 0x41, 0x50, 0x0, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x1, 0x4, 0x33, 0x44, 0x53, 0x39, 0x2, 0x1, 0x2, 0x3, 0x1, 0x1, 0x4, 0x1, 0x20, 0x5, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80, 0x0, 0x0, 0x6, 0x5, 0x9, 0x0, 0x0, 0x0, 0x8, 0x0, 0x0, 0x10, 0x8, 0x7, 0x5, 0x9, 0x0, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x18, 0x6, 0x5, 0x9, 0x0, 0x0, 0x0, 0x18, 0x0, 0x0, 0x60, 0x18, 0x6, 0x5, 0x9, 0x0, 0x0, 0xf0, 0x1f, 0x0, 0x0, 0xf8, 0x1f, 0x6, 0x5, 0x9, 0x0, 0x0, 0xf8, 0x1f, 0x0, 0x0, 0x0, 0x20, 0x6, 0x5, 0x9, 0x0, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0, 0x28, 0x6, 0x5, 0x9, 0x0, 0x0, 0xf0, 0xff, 0x0, 0x40, 0xf0, 0xff, 0x6, 0x5, 0x9, 0x0, 0x0, 0xff, 0xff, 0x0, 0x0, 0x0, 0x0, 0x5, 
+};
diff --git a/kernel/mmaps/3ds9.mmap b/kernel/mmaps/3ds9.mmap
new file mode 100644
index 0000000000000000000000000000000000000000..26d6045c3c684839c9c346d2da544225d1519099
GIT binary patch
literal 129
zcmebEbqrtt0zMGI$jHcI>=JCr#K^=9WHKtSa)N{z8W<SZz)TJX1_2IsFjD|1E&&mh
sU|>jqFh9sMF#M1Qi~ayI85AH26o5<(F!RHI28R#-!OZ{vfuano0G5#sKmY&$

literal 0
HcmV?d00001