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Add ubsan support based on NetBSD runtime
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| // | ||
| // kern_ubsan.h | ||
| // Lilu | ||
| // | ||
| // Copyright © 2018 vit9696. All rights reserved. | ||
| // | ||
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| #ifndef kern_ubsan_h | ||
| #define kern_ubsan_h | ||
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| // This header provides the necessary macros to facilate XNU compatibility | ||
| // with NetBSD UBSAN runtime. | ||
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| #include <Availability.h> | ||
| #include <libkern/libkern.h> | ||
| #include <IOKit/IOLib.h> | ||
| #include <sys/cdefs.h> | ||
| #include <sys/buf.h> | ||
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| // Working in kernel mode. | ||
| #ifndef _KERNEL | ||
| #define _KERNEL | ||
| #endif | ||
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| // Long double is supported on this target | ||
| #ifndef __HAVE_LONG_DOUBLE | ||
| #define __HAVE_LONG_DOUBLE | ||
| #endif | ||
|
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| // XNU does support __RCSID | ||
| #ifndef __KERNEL_RCSID | ||
| #define __KERNEL_RCSID(x, s) __RCSID(s) | ||
| #endif | ||
|
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| // XNU does not export KASSERTS | ||
| #ifndef KASSERT | ||
| #define KASSERT(exp) do { \ | ||
| if (__builtin_expect(!(exp), 0)) \ | ||
| (panic)("%s:%d KASSERT failed: %s", __FILE__, __LINE__, #exp); \ | ||
| } while (0) | ||
| #endif | ||
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| // vpanic is not supported | ||
| #ifndef vpanic | ||
| #define vpanic(fmt, va) do { \ | ||
| char buf[1024]; \ | ||
| vsnprintf(buf, sizeof(buf), (fmt), (va)); \ | ||
| (panic)("%s:%d VPANIC: %s", __FILE__, __LINE__, buf); \ | ||
| } while (0) | ||
| #endif | ||
|
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| // redirect vprintf to IOLog and unify log prints | ||
| #ifdef vprintf | ||
| #undef vprintf | ||
| #endif | ||
| #define vprintf(fmt, va) do { \ | ||
| char buf[1024]; \ | ||
| vsnprintf(buf, sizeof(buf), (fmt), (va)); \ | ||
| if (buf[0] == 'U' && buf[1] == 'B' && buf[2] == 'S' && buf[3] == 'a' && buf[4] == 'n' && buf[5] == ':') \ | ||
| IOLog("Lilu: ubsan @%s", &buf[6]); \ | ||
| else \ | ||
| IOLog("Lilu: ubsan @ %s", buf); \ | ||
| } while (0) | ||
|
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| // Bit manipulation is not present (aside an ugly BIT macro in IOFireWire header) | ||
| #ifndef __BIT | ||
| #define __BIT(__n) \ | ||
| (((uintmax_t)(__n) >= NBBY * sizeof(uintmax_t)) ? 0 : \ | ||
| ((uintmax_t)1 << (uintmax_t)((__n) & (NBBY * sizeof(uintmax_t) - 1)))) | ||
| #endif | ||
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| // Extended bit manipulation is also not present | ||
| #ifndef __LOWEST_SET_BIT | ||
| /* find least significant bit that is set */ | ||
| #define __LOWEST_SET_BIT(__mask) ((((__mask) - 1) & (__mask)) ^ (__mask)) | ||
| #define __SHIFTOUT(__x, __mask) (((__x) & (__mask)) / __LOWEST_SET_BIT(__mask)) | ||
| #define __SHIFTIN(__x, __mask) ((__x) * __LOWEST_SET_BIT(__mask)) | ||
| #define __SHIFTOUT_MASK(__mask) __SHIFTOUT((__mask), (__mask)) | ||
| #endif | ||
|
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| // vm_types.h should have ARRAY_COUNT, but it is not exported | ||
| #ifndef __arraycount | ||
| #define __arraycount(a) (sizeof((a)) / sizeof((a)[0])) | ||
| #endif | ||
|
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| // Printing macros are not defined by libkern | ||
| #ifndef PRIx8 | ||
| #define PRIx8 "hhx" | ||
| #define PRIx16 "hx" | ||
| #define PRIx32 "x" | ||
| #define PRIx64 "llx" | ||
| #define PRId32 "d" | ||
| #define PRId64 "lld" | ||
| #define PRIu32 "u" | ||
| #define PRIu64 "llu" | ||
| #endif | ||
|
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| #define UBSan Lilu | ||
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| #endif /* kern_ubsan_h */ |
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