Make arm64 pcb padding explicit
There is padding between some fields. Mark those I have found so they can be reused later if needed. Sponsored by: Arm Ltd
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@ -104,6 +104,12 @@ __FBSDID("$FreeBSD$");
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#include <dev/smbios/smbios.h>
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_Static_assert(sizeof(struct pcb) == 1216, "struct pcb is incorrect size");
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_Static_assert(offsetof(struct pcb, pcb_fpusaved) == 136,
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"pcb_fpusaved changed offset");
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_Static_assert(offsetof(struct pcb, pcb_fpustate) == 160,
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"pcb_fpustate changed offset");
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enum arm64_bus arm64_bus_method = ARM64_BUS_NONE;
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/*
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@ -57,6 +57,7 @@ struct pcb {
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u_int pcb_flags;
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#define PCB_SINGLE_STEP_SHIFT 0
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#define PCB_SINGLE_STEP (1 << PCB_SINGLE_STEP_SHIFT)
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uint32_t pcb_pad1;
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struct vfpstate *pcb_fpusaved;
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int pcb_fpflags;
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@ -66,6 +67,7 @@ struct pcb {
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/* The bits passed to userspace in get_fpcontext */
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#define PCB_FP_USERMASK (PCB_FP_STARTED)
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u_int pcb_vfpcpu; /* Last cpu this thread ran VFP code */
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uint64_t pcb_pad2;
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/*
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* The userspace VFP state. The pcb_fpusaved pointer will point to
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