Thu, 16 Feb 2012 17:12:49 -0800
7145346: VerifyStackAtCalls is broken
Summary: Replace call_epilog() encoding with macroassembler use. Moved duplicated code to x86.ad. Fixed return_addr() definition.
Reviewed-by: never
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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13 * accompanied this code).
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25 #ifndef OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP
26 #define OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP
28 #pragma warning(disable: 4035) // Disable warning 4035: no return value
30 // Efficient swapping of data bytes from Java byte
31 // ordering to native byte ordering and vice versa.
32 inline u2 Bytes::swap_u2(u2 x) {
33 #ifdef AMD64
34 address p = (address) &x;
35 return ( (u2(p[0]) << 8 ) | ( u2(p[1])) );
36 #else
37 __asm {
38 mov ax, x
39 xchg al, ah
40 }
41 // no return statement needed, result is already in ax
42 // compiler warning C4035 disabled via warning pragma
43 #endif // AMD64
44 }
46 inline u4 Bytes::swap_u4(u4 x) {
47 #ifdef AMD64
48 address p = (address) &x;
49 return ( (u4(p[0]) << 24) | (u4(p[1]) << 16) | (u4(p[2]) << 8) | u4(p[3])) ;
50 #else
51 __asm {
52 mov eax, x
53 bswap eax
54 }
55 // no return statement needed, result is already in eax
56 // compiler warning C4035 disabled via warning pragma
57 #endif // AMD64
58 }
60 #ifdef AMD64
61 inline u8 Bytes::swap_u8(u8 x) {
62 address p = (address) &x;
63 return ( (u8(p[0]) << 56) | (u8(p[1]) << 48) | (u8(p[2]) << 40) | (u8(p[3]) << 32) |
64 (u8(p[4]) << 24) | (u8(p[5]) << 16) | (u8(p[6]) << 8) | u8(p[7])) ;
65 }
67 #else
68 // Helper function for swap_u8
69 inline u8 Bytes::swap_u8_base(u4 x, u4 y) {
70 __asm {
71 mov eax, y
72 mov edx, x
73 bswap eax
74 bswap edx
75 }
76 // no return statement needed, result is already in edx:eax
77 // compiler warning C4035 disabled via warning pragma
78 }
80 inline u8 Bytes::swap_u8(u8 x) {
81 return swap_u8_base(*(u4*)&x, *(((u4*)&x)+1));
82 }
83 #endif // AMD64
85 #pragma warning(default: 4035) // Enable warning 4035: no return value
87 #endif // OS_CPU_WINDOWS_X86_VM_BYTES_WINDOWS_X86_INLINE_HPP