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https://github.com/subhobhai943/SUB-OS.git
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subhobhai943
70d5925b16
- Implement AArch64 HAL, vector table (16 aligned vectors), GICv2, Generic Timer, Stage-1 MMU (39-bit VA), PL011 UART - Build unified multi-architecture abstraction layer in include/arch/arch.h - Create interactive Linux-like Kconfig TUI menuconfig in scripts/kconfig/menuconfig.py - Support make menuconfig, defconfig, x86_64_defconfig, aarch64_defconfig - Update master Makefile for cross-compiling x86_64 (x86_64-elf-) and AArch64 (aarch64-linux-gnu-) - Dynamic architecture awareness across printk, uname, neofetch, and LazyBox
118 lines
2.9 KiB
ArmAsm
118 lines
2.9 KiB
ArmAsm
/*
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* SUB-OS AArch64 Exception Vector Table
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* 16 vectors aligned on 128-byte (0x80) boundaries
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*/
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.macro SAVE_ALL
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sub sp, sp, #272
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stp x0, x1, [sp, #0]
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stp x2, x3, [sp, #16]
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stp x4, x5, [sp, #32]
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stp x6, x7, [sp, #48]
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stp x8, x9, [sp, #64]
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stp x10, x11, [sp, #80]
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stp x12, x13, [sp, #96]
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stp x14, x15, [sp, #112]
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stp x16, x17, [sp, #128]
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stp x18, x19, [sp, #144]
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stp x20, x21, [sp, #160]
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stp x22, x23, [sp, #176]
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stp x24, x25, [sp, #192]
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stp x26, x27, [sp, #208]
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stp x28, x29, [sp, #224]
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mrs x0, elr_el1
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mrs x1, spsr_el1
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stp x30, x0, [sp, #240]
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str x1, [sp, #256]
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.endm
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.macro RESTORE_ALL
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ldr x1, [sp, #256]
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msr spsr_el1, x1
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ldp x30, x0, [sp, #240]
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msr elr_el1, x0
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ldp x28, x29, [sp, #224]
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ldp x26, x27, [sp, #208]
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ldp x24, x25, [sp, #192]
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ldp x22, x23, [sp, #176]
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ldp x20, x21, [sp, #160]
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ldp x18, x19, [sp, #144]
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ldp x16, x17, [sp, #128]
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ldp x14, x15, [sp, #112]
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ldp x12, x13, [sp, #96]
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ldp x10, x11, [sp, #80]
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ldp x8, x9, [sp, #64]
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ldp x6, x7, [sp, #48]
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ldp x4, x5, [sp, #32]
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ldp x2, x3, [sp, #16]
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ldp x0, x1, [sp, #0]
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add sp, sp, #272
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eret
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.endm
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.section ".vectors", "ax"
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.align 11
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.global vectors
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vectors:
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// 1. Current EL with SP0
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.align 7; b handle_sync_curr_sp0
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.align 7; b handle_irq_curr_sp0
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.align 7; b handle_fiq_curr_sp0
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.align 7; b handle_serror_curr_sp0
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// 2. Current EL with SPx
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.align 7; b handle_sync_curr_spx
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.align 7; b handle_irq_curr_spx
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.align 7; b handle_fiq_curr_spx
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.align 7; b handle_serror_curr_spx
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// 3. Lower EL using AArch64
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.align 7; b handle_sync_lower_aarch64
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.align 7; b handle_irq_lower_aarch64
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.align 7; b handle_fiq_lower_aarch64
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.align 7; b handle_serror_lower_aarch64
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// 4. Lower EL using AArch32
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.align 7; b handle_sync_lower_aarch32
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.align 7; b handle_irq_lower_aarch32
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.align 7; b handle_fiq_lower_aarch32
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.align 7; b handle_serror_lower_aarch32
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// Common Vector Handlers
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handle_sync_curr_sp0:
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handle_sync_curr_spx:
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handle_sync_lower_aarch64:
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handle_sync_lower_aarch32:
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SAVE_ALL
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mov x0, sp
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bl aarch64_sync_handler
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RESTORE_ALL
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handle_irq_curr_sp0:
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handle_irq_curr_spx:
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handle_irq_lower_aarch64:
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handle_irq_lower_aarch32:
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SAVE_ALL
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mov x0, sp
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bl aarch64_irq_handler
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RESTORE_ALL
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handle_fiq_curr_sp0:
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handle_fiq_curr_spx:
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handle_fiq_lower_aarch64:
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handle_fiq_lower_aarch32:
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SAVE_ALL
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mov x0, sp
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bl aarch64_fiq_handler
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RESTORE_ALL
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handle_serror_curr_sp0:
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handle_serror_curr_spx:
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handle_serror_lower_aarch64:
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handle_serror_lower_aarch32:
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SAVE_ALL
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mov x0, sp
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bl aarch64_serror_handler
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RESTORE_ALL
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