| Dmitry V. Levin | d70d1c4 | 2015-03-22 22:13:55 +0000 | [diff] [blame] | 1 | if (x86_io.iov_len != sizeof(i386_regs)) { |
| 2 | /* x86-64 or x32 ABI */ |
| 3 | tcp->u_arg[0] = x86_64_regs.rdi; |
| 4 | tcp->u_arg[1] = x86_64_regs.rsi; |
| 5 | tcp->u_arg[2] = x86_64_regs.rdx; |
| 6 | tcp->u_arg[3] = x86_64_regs.r10; |
| 7 | tcp->u_arg[4] = x86_64_regs.r8; |
| 8 | tcp->u_arg[5] = x86_64_regs.r9; |
| 9 | #ifdef X32 |
| 10 | tcp->ext_arg[0] = x86_64_regs.rdi; |
| 11 | tcp->ext_arg[1] = x86_64_regs.rsi; |
| 12 | tcp->ext_arg[2] = x86_64_regs.rdx; |
| 13 | tcp->ext_arg[3] = x86_64_regs.r10; |
| 14 | tcp->ext_arg[4] = x86_64_regs.r8; |
| 15 | tcp->ext_arg[5] = x86_64_regs.r9; |
| 16 | #endif |
| 17 | } else { |
| 18 | /* i386 ABI */ |
| 19 | /* Zero-extend from 32 bits */ |
| 20 | /* Use widen_to_long(tcp->u_arg[N]) in syscall handlers |
| 21 | * if you need to use *sign-extended* parameter. |
| 22 | */ |
| 23 | tcp->u_arg[0] = (long)(uint32_t)i386_regs.ebx; |
| 24 | tcp->u_arg[1] = (long)(uint32_t)i386_regs.ecx; |
| 25 | tcp->u_arg[2] = (long)(uint32_t)i386_regs.edx; |
| 26 | tcp->u_arg[3] = (long)(uint32_t)i386_regs.esi; |
| 27 | tcp->u_arg[4] = (long)(uint32_t)i386_regs.edi; |
| 28 | tcp->u_arg[5] = (long)(uint32_t)i386_regs.ebp; |
| 29 | } |