mirror of https://github.com/xemu-project/xemu.git
3d7680fb18
Currently bitops.h defines a set of operations that work on arbitrary-length bit arrays. However (largely because they originally came from the Linux kernel) the bit array storage is an array of 'unsigned long'. This is OK for the kernel and even for parts of QEMU where we don't really care about the underlying storage format, but it is not good for devices, where we often want to expose the storage to the guest and so need a type that is not variably-sized between host OSes. We already have a workaround for this in the GICv3 model: arm_gicv3_common.h defines equivalents of the bit operations that work on uint32_t. It turns out that we should also be using something similar in hw/intc/loongarch_extioi.c, which currently casts a pointer to a uint32_t array to 'unsigned long *' in extio_setirq(), which is both undefined behaviour and not correct on a big-endian host. Define equivalents of the set_bit() function family which work with a uint32_t array. (Cc stable because we're about to provide a bugfix to loongarch_extioi which will depend on this commit.) Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20241108135514.4006953-2-peter.maydell@linaro.org |
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| crypto | ||
| disas | ||
| exec | ||
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| gdbstub | ||
| hw | ||
| io | ||
| libdecnumber | ||
| migration | ||
| monitor | ||
| net | ||
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| qemu | ||
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| scsi | ||
| semihosting | ||
| standard-headers | ||
| sysemu | ||
| tcg | ||
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| elf.h | ||
| glib-compat.h | ||
| qemu-io.h | ||
| qemu-main.h | ||