diff options
Diffstat (limited to 'libgloss/pru')
| -rw-r--r-- | libgloss/pru/syscalls.S | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/libgloss/pru/syscalls.S b/libgloss/pru/syscalls.S index 252231e90..80486d1f9 100644 --- a/libgloss/pru/syscalls.S +++ b/libgloss/pru/syscalls.S @@ -68,7 +68,6 @@ __SC_ret_skip_errno_set: users use other methods for communicating with the host - remoteproc, rpmsg, shared memory. */ SC _exit, SYS_exit - SC _open, SYS_open SC _close, SYS_close SC _read, SYS_read SC _write, SYS_write @@ -77,3 +76,20 @@ __SC_ret_skip_errno_set: SC _getpid, SYS_getpid SC _kill, SYS_kill SC _fstat, SYS_fstat + + + /* _open is special because it has VA declaration. */ + .section .text._open, "ax" + .global _open + .type _open,@function + .func +_open: + /* Pop the second and third argument from stack, per VA ABI. + Thus simulator can get all arguments from registers + for any supported syscall. */ + lbbo r16, sp, 4, 4 + lbbo r15, sp, 0, 4 + ldi r1, SYS_open + halt + jmp __SC_ret + .endfunc |