| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| #include "textflag.h" |
| |
| TEXT _rt0_arm_linux(SB),NOSPLIT|NOFRAME,$0 |
| MOVW (R13), R0 // argc |
| MOVW $4(R13), R1 // argv |
| MOVW $_rt0_arm_linux1(SB), R4 |
| B (R4) |
| |
| // When building with -buildmode=c-shared, this symbol is called when the shared |
| // library is loaded. |
| TEXT _rt0_arm_linux_lib(SB),NOSPLIT,$0 |
| B _rt0_arm_lib(SB) |
| |
| TEXT _rt0_arm_linux1(SB),NOSPLIT|NOFRAME,$0 |
| // We first need to detect the kernel ABI, and warn the user |
| // if the system only supports OABI. |
| // The strategy here is to call some EABI syscall to see if |
| // SIGILL is received. |
| // If you get a SIGILL here, you have the wrong kernel. |
| |
| // Save argc and argv (syscall will clobber at least R0). |
| MOVM.DB.W [R0-R1], (R13) |
| |
| // do an EABI syscall |
| MOVW $20, R7 // sys_getpid |
| SWI $0 // this will trigger SIGILL on OABI systems |
| |
| MOVM.IA.W (R13), [R0-R1] |
| B runtime·rt0_go(SB) |
