Mercurial > pub > dyncall > dyncall
annotate dyncall/dyncall_call_x64.S @ 339:4f9f49fb82ce
- x64 SysV syscall support
| author | Tassilo Philipp |
|---|---|
| date | Sat, 04 Jan 2020 01:07:49 +0100 |
| parents | f5577f6bf97a |
| children | ab2d78e48ca2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 | |
| 3 Package: dyncall | |
| 4 Library: dyncall | |
|
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5 File: dyncall/dyncall_call_x64.S |
| 0 | 6 Description: All x64 abi call kernel implementation |
| 7 License: | |
| 8 | |
| 339 | 9 Copyright (c) 2007-2020 Daniel Adler <dadler@uni-goettingen.de>, |
| 0 | 10 Tassilo Philipp <tphilipp@potion-studios.com> |
| 11 | |
| 12 Permission to use, copy, modify, and distribute this software for any | |
| 13 purpose with or without fee is hereby granted, provided that the above | |
| 14 copyright notice and this permission notice appear in all copies. | |
| 15 | |
| 16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 23 | |
| 24 */ | |
| 25 | |
| 26 | |
| 27 | |
|
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28 #include "../portasm/portasm-x64.S" |
| 0 | 29 |
| 30 BEGIN_ASM | |
| 31 | |
| 32 /*--------------------------------------------------------------------------- | |
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33 |
| 0 | 34 Call Kernel for x64 System V |
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35 |
| 0 | 36 Input: |
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37 RDI : size of arguments to be passed via stack |
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38 RSI : pointer to arguments to be passed via the stack |
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39 RDX : pointer to arguments of integral/pointer type to be passed via registers |
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40 RCX : pointer to arguments of floating point type to be passed via registers |
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41 R8 : target function pointer |
| 0 | 42 Notes: |
| 43 RSP+8: is always 16-byte aligned (32-byte align if __m256 is used) | |
| 44 */ | |
| 45 | |
| 46 GLOBAL(dcCall_x64_sysv) | |
| 47 BEGIN_PROC(dcCall_x64_sysv) | |
| 48 PUSH(RBP) /* Pseudo-prolog - preserve RBP. */ | |
| 49 PUSH(RBX) /* Preserve RBX and store pointer to function in it. */ | |
| 50 MOV(RSP,RBP) /* Store stack pointer in RBP. */ | |
| 51 MOV(R8 ,RBX) | |
| 52 MOVSD(QWORD(RCX,0) ,XMM0) /* Copy first 8 floats to XMM0-XMM7. */ | |
| 53 MOVSD(QWORD(RCX,8) ,XMM1) | |
| 54 MOVSD(QWORD(RCX,16),XMM2) | |
| 55 MOVSD(QWORD(RCX,24),XMM3) | |
| 56 MOVSD(QWORD(RCX,32),XMM4) | |
| 57 MOVSD(QWORD(RCX,40),XMM5) | |
| 58 MOVSD(QWORD(RCX,48),XMM6) | |
| 59 MOVSD(QWORD(RCX,56),XMM7) | |
| 60 | |
| 61 ADD(LIT(31),RDI) /* Align stack to 32-byte. */ | |
| 62 AND(LIT(-32),RDI) | |
| 339 | 63 ADD(LIT(8),RDI) /* Adjust by 8-byte for the return-address. */ |
| 0 | 64 SUB(RDI,RSP) /* Setup stack frame by subtracting the size of arguments. */ |
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65 |
| 0 | 66 MOV(RDI,RCX) /* Store number of bytes to copy to stack in RCX (for rep movsb). */ |
| 67 MOV(RSP,RDI) /* Store pointer to beginning of stack arguments in RDI (for rep movsb). */ | |
| 68 | |
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69 REP(MOVSB) /* copy bytes (@@@ should be optimized, movq?). */ |
| 0 | 70 |
| 71 MOV(QWORD(RDX,0),RDI) /* copy first six int/pointer arguments to RDI, RSI, RDX, RCX, R8, R9. */ | |
| 72 MOV(QWORD(RDX,8),RSI) | |
| 73 MOV(QWORD(RDX,24),RCX) | |
| 74 MOV(QWORD(RDX,32),R8) | |
| 75 MOV(QWORD(RDX,40),R9) | |
| 76 MOV(QWORD(RDX,16),RDX) /* Set RDX last to not overwrite it to soon. */ | |
| 77 | |
| 78 MOVB(LIT(8),AL) /* Put upper bound of number of used xmm registers in AL. */ | |
| 79 CALL_REG(RBX) /* Call function. */ | |
| 80 | |
| 81 MOV(RBP,RSP) /* Restore stack pointer. */ | |
| 82 POP(RBX) /* Restore RBX. */ | |
| 83 POP(RBP) /* Pseudo-epilog. */ | |
| 84 RET() | |
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85 END_PROC(dcCall_x64_sysv) |
| 0 | 86 |
| 87 /*--------------------------------------------------------------------------- | |
| 88 | |
| 89 Call Kernel for x64 Win64 | |
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90 |
| 0 | 91 Input: |
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92 RCX : size of arguments to be passed via stack |
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93 RDX : pointer to arguments to be passed via the stack |
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94 R8 : pointer to arguments of integral/pointer type to be passed via registers |
| 0 | 95 R9 : target function pointer |
| 96 | |
| 97 */ | |
| 98 | |
| 99 GLOBAL(dcCall_x64_win64) | |
| 100 BEGIN_PROC(dcCall_x64_win64) | |
| 101 | |
| 102 PUSH(RBP) /* Pseudo-prolog - preserve RBP. */ | |
| 103 PUSH(RSI) /* Preserve RSI and RDI. */ | |
| 104 PUSH(RDI) | |
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105 |
| 0 | 106 MOV(RSP,RBP) /* Store stack pointer in RBP. */ |
| 107 | |
| 108 ADD(LIT(15),RCX) /* Align stack size to 16 bytes. */ | |
| 109 AND(LIT(-16),RCX) | |
| 110 SUB(RCX,RSP) /* Setup stack frame by subtracting the size of the arguments. */ | |
| 111 | |
| 112 | |
| 113 MOV(RDX, RSI) /* Let RSI point to the arguments. */ | |
| 114 MOV(RSP, RDI) /* Store pointer to beginning of stack arguments in RDI (for rep movsb). */ | |
| 115 MOV(R9, RAX) /* Put function address in RAX. */ | |
| 116 | |
| 117 REP(MOVSB) /* @@@ should be optimized (e.g. movq) */ | |
| 118 | |
| 119 MOV(QWORD(R8,0),RCX) /* Copy first four arguments to RCX, RDX, R9, R8 ( and XMM0-XMM3. ) */ | |
| 120 MOV(QWORD(R8,8),RDX) | |
| 121 MOV(QWORD(R8,24),R9) | |
| 122 MOV(QWORD(R8,16),R8) | |
| 123 | |
| 124 MOVD(RCX, XMM0) | |
| 125 MOVD(RDX, XMM1) | |
| 126 MOVD(R8, XMM2) | |
| 127 MOVD(R9, XMM3) | |
| 128 | |
| 129 PUSH(R9) /* Push first four arguments onto the stack preserve area. */ | |
| 130 PUSH(R8) | |
| 131 PUSH(RDX) | |
| 132 PUSH(RCX) | |
| 133 | |
| 134 CALL_REG(RAX) /* Invoke function. */ | |
| 135 | |
| 136 MOV(RBP, RSP) /* Restore stack pointer (such that we can pop the preserved vALues). */ | |
| 137 | |
| 138 POP(RDI) /* Restore RSI and RDI. */ | |
| 139 POP(RSI) | |
| 140 POP(RBP) /* Pseudo-epilog. */ | |
| 141 | |
| 142 RET() | |
| 143 | |
| 144 END_PROC(dcCall_x64_win64) | |
| 145 | |
| 339 | 146 /*--------------------------------------------------------------------------- |
| 147 | |
| 148 Call Kernel for x64 System V syscalls | |
| 149 | |
| 150 Input: | |
| 151 RDI : pointer to arguments | |
| 152 RSI : syscall id | |
| 153 | |
| 154 */ | |
| 155 | |
| 156 GLOBAL(dcCall_x64_sys_syscall_sysv) | |
| 157 BEGIN_PROC(dcCall_x64_sys_syscall_sysv) | |
| 158 | |
| 159 MOV(RSI,RAX) /* load system call id. */ | |
| 160 MOV(QWORD(RDI,40),R9) /* copy first six int/pointer arguments to RDI, RSI, RDX, R10, R8, R9. */ | |
| 161 MOV(QWORD(RDI,32),R8) | |
| 162 MOV(QWORD(RDI,24),R10) | |
| 163 MOV(QWORD(RDI,16),RDX) | |
| 164 MOV(QWORD(RDI,8),RSI) | |
| 165 MOV(QWORD(RDI,0),RDI) /* Set RDI last to not overwrite it to soon. */ | |
| 166 SYSCALL | |
| 167 RET() | |
| 168 | |
| 169 END_PROC(dcCall_x64_sys_syscall_sysv) | |
| 170 | |
| 0 | 171 END_ASM |
| 172 |