8c44d12357
Boots under QEMU on all three ISAs from one clang build: - shared C core (kmain, console) calls a small per-arch contract (arch.h) - per-arch asm entry + trap/vector table + UART driver - parallel Makefile (make -j), 'make run-<arch>', 'make sizes' M1 = boot, UART up, trap vector installed, banner from kmain().
16 lines
615 B
ArmAsm
16 lines
615 B
ArmAsm
@ vectors.S (ARMv7-A) — the exception vector table VBAR points at.
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@ M1 keeps every entry a self-loop; M2 will wire IRQ to a C handler
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@ via the GIC. The 8 standard ARM vectors, in order.
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.section .text
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.align 5 @ vector base must be 32-byte aligned
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.global vector_table
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vector_table:
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b . @ 0x00 Reset
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b . @ 0x04 Undefined instruction
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b . @ 0x08 Supervisor Call (SVC)
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b . @ 0x0C Prefetch Abort
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b . @ 0x10 Data Abort
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b . @ 0x14 (reserved)
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b . @ 0x18 IRQ
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b . @ 0x1C FIQ
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