/usr/include/hphp/util/etch-helpers.h is in hhvm-dev 3.21.0+dfsg-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | #ifndef incl_ETCH_HELPERS_H
#define incl_ETCH_HELPERS_H
#ifdef _MSC_VER
#define CFI(x) .cfi_##x
#define CFI2(x, y) .cfi_##x y
#define CFI3C(x, y, z) .cfi_##x y##, z
#define ETCH_ALIGN16 .align 16
#define ETCH_ALIGN8 .align 8
#define ETCH_ALIGN4 .align 4
#define ETCH_SECTION(x) .section .text.x
#define ETCH_SIZE(x) /* Not used with PE/COFF on windows */
#define ETCH_NAME(x) x
#define ETCH_LABEL(x) .L##x
#define ETCH_TYPE(x, y) /* Not used on Windows */
#define ETCH_NAME_REL(x) $ x
#define ETCH_ARG1 %rcx
#define ETCH_ARG2 %rdx
#define ETCH_ARG3 %r8
#define ETCH_ARG4 %r9
#define ETCH_ARG5 %r10 /* Use r10 here */
#define ETCH_ARG6 %r11 /* Use r11 here */
/* Borrow scratch registers for the 5th and 6th args
* since Windows only has four registers args in its ABI */
#define ETCH_GET_ARG5 mov 0x28(%rsp), %r10
#define ETCH_GET_ARG6 mov 0x30(%rsp), %r11
#define ETCH_RET1 %rax
#elif defined(__APPLE__)
#define CFI(x) .cfi_##x
#define CFI2(x, y) .cfi_##x y
#define CFI3C(x, y, z) .cfi_##x y##, z
#define ETCH_ALIGN16 .align 4 // on OSX this is 2^value
#define ETCH_ALIGN8 .align 3
#define ETCH_ALIGN4 .align 2
#define ETCH_SECTION(x) .text
#define ETCH_SIZE(x) /* not used on OSX */
#define ETCH_NAME(x) _##x
#define ETCH_LABEL(x) .L##_##x
#define ETCH_TYPE(x, y) /* not used on OSX */
#define ETCH_NAME_REL(x) _##x@GOTPCREL(%rip)
#define ETCH_ARG1 %rdi
#define ETCH_ARG2 %rsi
#define ETCH_ARG3 %rdx
#define ETCH_ARG4 %rcx
#define ETCH_ARG5 %r8
#define ETCH_ARG6 %r9
#define ETCH_GET_ARG5 /* not used */
#define ETCH_GET_ARG6 /* not used */
#define ETCH_RET1 %rax
#elif defined(__aarch64__)
#define CFI(x) .cfi_##x
#define CFI2(x, y) .cfi_##x y
#define CFI3C(x, y, z) .cfi_##x y##, z
#define ETCH_ALIGN16 .balign 16
#define ETCH_ALIGN8 .balign 8
#define ETCH_ALIGN4 .balign 4
#define ETCH_SECTION(x) .section .text.x,"ax"
#define ETCH_SIZE(x) .size x, .-x
#define ETCH_NAME(x) x
#define ETCH_LABEL(x) .L##x
#define ETCH_TYPE(x, y) .type x, y
#define ETCH_NAME_REL(x) $ x
#define ETCH_ARG1 %x0
#define ETCH_ARG2 %x1
#define ETCH_ARG3 %x2
#define ETCH_ARG4 %x3
#define ETCH_ARG5 %x4
#define ETCH_ARG6 %x5
#else /* Other x86 (e.g. linux) */
#define CFI(x) .cfi_##x
#define CFI2(x, y) .cfi_##x y
#define CFI3C(x, y, z) .cfi_##x y##, z
#define ETCH_ALIGN16 .align 16
#define ETCH_ALIGN8 .align 8
#define ETCH_ALIGN4 .align 4
#define ETCH_SECTION(x) .section .text.x,"ax"
#define ETCH_SIZE(x) .size x, .-x
#define ETCH_NAME(x) x
#define ETCH_LABEL(x) .L##x
#define ETCH_TYPE(x, y) .type x, y
#define ETCH_NAME_REL(x) $ x
#define ETCH_ARG1 %rdi
#define ETCH_ARG2 %rsi
#define ETCH_ARG3 %rdx
#define ETCH_ARG4 %rcx
#define ETCH_ARG5 %r8
#define ETCH_ARG6 %r9
#define ETCH_GET_ARG5 /* not used */
#define ETCH_GET_ARG6 /* not used */
#define ETCH_RET1 %rax
#endif
#endif // incl_ETCH_HELPERS_H
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