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Expand RE_BREAKPOINT macro on ARM64 #961

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merged 3 commits into from
Sep 26, 2023
Merged

Expand RE_BREAKPOINT macro on ARM64 #961

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9b07028
Expand RE_BREAKPOINT macro on ARM64 (works at least on MacOS/clang)
larsimmisch Sep 24, 2023
c933016
Much nicer (thanks to @sreimers)
larsimmisch Sep 25, 2023
036b78e
Try to fix MSVC
larsimmisch Sep 26, 2023
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2 changes: 2 additions & 0 deletions include/re_types.h
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Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,8 @@ typedef SSIZE_T ssize_t;
/** Defines a soft breakpoint */
#if (defined(__i386__) || defined(__x86_64__))
#define RE_BREAKPOINT __asm__("int $0x03")
#elif defined(__aarch64__)
#define RE_BREAKPOINT __builtin_debugtrap()
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@sreimers sreimers Sep 25, 2023 •
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I think we can make this more generic with:

#elif defined(__has_builtin) && __has_builtin(__builtin_debugtrap)
#define RE_BREAKPOINT __builtin_debugtrap()

Since __builtin_debugtrap() is clang only I think.

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Yes, that's much better. I've changed it accordingly.

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@sreimers sreimers Sep 26, 2023 •
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Looks like MSVC does not like this, can you try:

#if (defined(__i386__) || defined(__x86_64__))
#define RE_BREAKPOINT __asm__("int $0x03")
#elif defined(__has_builtin) 
#if __has_builtin(__builtin_debugtrap)
#define RE_BREAKPOINT __builtin_debugtrap()
#endif
#endif

#ifndef RE_BREAKPOINT
#define RE_BREAKPOINT
#endif

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I'll have an eye on the validation run

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Looks good

#else
#define RE_BREAKPOINT
#endif
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