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072890c1bf
Add the address alignment to keep the constraint of ARMv7-M architecture same as RAM vector. ARMv7-M architecture describes the vector table address alignment as following. The Vector table must be naturally aligned to a power of two whose alignment value is greater than or equal to (Number of Exceptions supported x 4), with a minimum alignment of 128 bytes. I wonder why the implementation of arm_vectors.c does not follow this constraint of address alignment about ARMv7-M architecture. Although RAM vector is taken care about it. I think, as the result it was done by linker script on each board. At our system, NuttX will be started by bootloader. To fix the address of entry point(__start) I set the address of entry point to beginning of binary, so the beginning of binary is not a vector table. At this case, keeping the address alignment constraint of arm_vectors.c is needed. |
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| .. | ||
| arm | ||
| arm64 | ||
| avr | ||
| ceva | ||
| dummy | ||
| hc | ||
| mips | ||
| misoc | ||
| or1k | ||
| renesas | ||
| risc-v | ||
| sim | ||
| sparc | ||
| tricore | ||
| x86 | ||
| x86_64 | ||
| xtensa | ||
| z16 | ||
| z80 | ||
| CMakeLists.txt | ||
| Kconfig | ||