Initial commit: Go 1.23 release state
This commit is contained in:
Vorapol Rinsatitnon
456
src/runtime/sys_freebsd_arm.s
Normal file
456
src/runtime/sys_freebsd_arm.s
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@@ -0,0 +1,456 @@
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//
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// System calls and other sys.stuff for ARM, FreeBSD
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// /usr/src/sys/kern/syscalls.master for syscall numbers.
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//
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#include "go_asm.h"
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#include "go_tls.h"
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#include "textflag.h"
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// for EABI, as we don't support OABI
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#define SYS_BASE 0x0
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#define SYS_exit (SYS_BASE + 1)
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#define SYS_read (SYS_BASE + 3)
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#define SYS_write (SYS_BASE + 4)
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#define SYS_open (SYS_BASE + 5)
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#define SYS_close (SYS_BASE + 6)
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#define SYS_getpid (SYS_BASE + 20)
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#define SYS_kill (SYS_BASE + 37)
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#define SYS_sigaltstack (SYS_BASE + 53)
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#define SYS_munmap (SYS_BASE + 73)
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#define SYS_madvise (SYS_BASE + 75)
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#define SYS_setitimer (SYS_BASE + 83)
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#define SYS_fcntl (SYS_BASE + 92)
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#define SYS___sysctl (SYS_BASE + 202)
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#define SYS_nanosleep (SYS_BASE + 240)
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#define SYS_issetugid (SYS_BASE + 253)
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#define SYS_clock_gettime (SYS_BASE + 232)
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#define SYS_sched_yield (SYS_BASE + 331)
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#define SYS_sigprocmask (SYS_BASE + 340)
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#define SYS_kqueue (SYS_BASE + 362)
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#define SYS_sigaction (SYS_BASE + 416)
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#define SYS_thr_exit (SYS_BASE + 431)
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#define SYS_thr_self (SYS_BASE + 432)
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#define SYS_thr_kill (SYS_BASE + 433)
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#define SYS__umtx_op (SYS_BASE + 454)
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#define SYS_thr_new (SYS_BASE + 455)
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#define SYS_mmap (SYS_BASE + 477)
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#define SYS_cpuset_getaffinity (SYS_BASE + 487)
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#define SYS_pipe2 (SYS_BASE + 542)
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#define SYS_kevent (SYS_BASE + 560)
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TEXT runtime·sys_umtx_op(SB),NOSPLIT,$0
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MOVW addr+0(FP), R0
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MOVW mode+4(FP), R1
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MOVW val+8(FP), R2
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MOVW uaddr1+12(FP), R3
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ADD $20, R13 // arg 5 is passed on stack
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MOVW $SYS__umtx_op, R7
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SWI $0
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RSB.CS $0, R0
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SUB $20, R13
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// BCS error
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MOVW R0, ret+20(FP)
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RET
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TEXT runtime·thr_new(SB),NOSPLIT,$0
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MOVW param+0(FP), R0
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MOVW size+4(FP), R1
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MOVW $SYS_thr_new, R7
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SWI $0
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RSB.CS $0, R0
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MOVW R0, ret+8(FP)
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RET
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TEXT runtime·thr_start(SB),NOSPLIT,$0
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// set up g
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MOVW m_g0(R0), g
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MOVW R0, g_m(g)
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BL runtime·emptyfunc(SB) // fault if stack check is wrong
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BL runtime·mstart(SB)
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MOVW $2, R8 // crash (not reached)
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MOVW R8, (R8)
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RET
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// Exit the entire program (like C exit)
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TEXT runtime·exit(SB),NOSPLIT|NOFRAME,$0
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MOVW code+0(FP), R0 // arg 1 exit status
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MOVW $SYS_exit, R7
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SWI $0
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MOVW.CS $0, R8 // crash on syscall failure
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MOVW.CS R8, (R8)
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RET
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// func exitThread(wait *atomic.Uint32)
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TEXT runtime·exitThread(SB),NOSPLIT,$0-4
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MOVW wait+0(FP), R0
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// We're done using the stack.
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MOVW $0, R2
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storeloop:
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LDREX (R0), R4 // loads R4
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STREX R2, (R0), R1 // stores R2
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CMP $0, R1
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BNE storeloop
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MOVW $0, R0 // arg 1 long *state
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MOVW $SYS_thr_exit, R7
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SWI $0
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MOVW.CS $0, R8 // crash on syscall failure
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MOVW.CS R8, (R8)
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JMP 0(PC)
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TEXT runtime·open(SB),NOSPLIT|NOFRAME,$0
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MOVW name+0(FP), R0 // arg 1 name
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MOVW mode+4(FP), R1 // arg 2 mode
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MOVW perm+8(FP), R2 // arg 3 perm
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MOVW $SYS_open, R7
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SWI $0
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MOVW.CS $-1, R0
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MOVW R0, ret+12(FP)
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RET
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TEXT runtime·read(SB),NOSPLIT|NOFRAME,$0
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MOVW fd+0(FP), R0 // arg 1 fd
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MOVW p+4(FP), R1 // arg 2 buf
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MOVW n+8(FP), R2 // arg 3 count
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MOVW $SYS_read, R7
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SWI $0
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RSB.CS $0, R0 // caller expects negative errno
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MOVW R0, ret+12(FP)
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RET
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// func pipe2(flags int32) (r, w int32, errno int32)
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TEXT runtime·pipe2(SB),NOSPLIT,$0-16
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MOVW $r+4(FP), R0
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MOVW flags+0(FP), R1
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MOVW $SYS_pipe2, R7
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SWI $0
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RSB.CS $0, R0
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MOVW R0, errno+12(FP)
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RET
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TEXT runtime·write1(SB),NOSPLIT|NOFRAME,$0
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MOVW fd+0(FP), R0 // arg 1 fd
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MOVW p+4(FP), R1 // arg 2 buf
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MOVW n+8(FP), R2 // arg 3 count
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MOVW $SYS_write, R7
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SWI $0
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RSB.CS $0, R0 // caller expects negative errno
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MOVW R0, ret+12(FP)
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RET
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TEXT runtime·closefd(SB),NOSPLIT|NOFRAME,$0
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MOVW fd+0(FP), R0 // arg 1 fd
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MOVW $SYS_close, R7
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SWI $0
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MOVW.CS $-1, R0
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MOVW R0, ret+4(FP)
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RET
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TEXT runtime·thr_self(SB),NOSPLIT,$0-4
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// thr_self(&0(FP))
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MOVW $ret+0(FP), R0 // arg 1
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MOVW $SYS_thr_self, R7
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SWI $0
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RET
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TEXT runtime·thr_kill(SB),NOSPLIT,$0-8
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// thr_kill(tid, sig)
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MOVW tid+0(FP), R0 // arg 1 id
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MOVW sig+4(FP), R1 // arg 2 signal
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MOVW $SYS_thr_kill, R7
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SWI $0
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RET
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TEXT runtime·raiseproc(SB),NOSPLIT,$0
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// getpid
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MOVW $SYS_getpid, R7
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SWI $0
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// kill(self, sig)
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// arg 1 - pid, now in R0
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MOVW sig+0(FP), R1 // arg 2 - signal
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MOVW $SYS_kill, R7
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SWI $0
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RET
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TEXT runtime·setitimer(SB), NOSPLIT|NOFRAME, $0
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MOVW mode+0(FP), R0
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MOVW new+4(FP), R1
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MOVW old+8(FP), R2
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MOVW $SYS_setitimer, R7
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SWI $0
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RET
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// func fallback_walltime() (sec int64, nsec int32)
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TEXT runtime·fallback_walltime(SB), NOSPLIT, $32-12
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MOVW $0, R0 // CLOCK_REALTIME
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MOVW $8(R13), R1
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MOVW $SYS_clock_gettime, R7
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SWI $0
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MOVW 8(R13), R0 // sec.low
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MOVW 12(R13), R1 // sec.high
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MOVW 16(R13), R2 // nsec
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MOVW R0, sec_lo+0(FP)
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MOVW R1, sec_hi+4(FP)
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MOVW R2, nsec+8(FP)
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RET
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// func fallback_nanotime() int64
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TEXT runtime·fallback_nanotime(SB), NOSPLIT, $32
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MOVW $4, R0 // CLOCK_MONOTONIC
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MOVW $8(R13), R1
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MOVW $SYS_clock_gettime, R7
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SWI $0
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MOVW 8(R13), R0 // sec.low
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MOVW 12(R13), R4 // sec.high
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MOVW 16(R13), R2 // nsec
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MOVW $1000000000, R3
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MULLU R0, R3, (R1, R0)
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MUL R3, R4
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ADD.S R2, R0
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ADC R4, R1
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MOVW R0, ret_lo+0(FP)
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MOVW R1, ret_hi+4(FP)
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RET
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TEXT runtime·asmSigaction(SB),NOSPLIT|NOFRAME,$0
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MOVW sig+0(FP), R0 // arg 1 sig
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MOVW new+4(FP), R1 // arg 2 act
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MOVW old+8(FP), R2 // arg 3 oact
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MOVW $SYS_sigaction, R7
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SWI $0
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MOVW.CS $-1, R0
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MOVW R0, ret+12(FP)
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RET
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TEXT runtime·sigtramp(SB),NOSPLIT|TOPFRAME,$0
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// Reserve space for callee-save registers and arguments.
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MOVM.DB.W [R4-R11], (R13)
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SUB $16, R13
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// this might be called in external code context,
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// where g is not set.
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// first save R0, because runtime·load_g will clobber it
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MOVW R0, 4(R13) // signum
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MOVB runtime·iscgo(SB), R0
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CMP $0, R0
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BL.NE runtime·load_g(SB)
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MOVW R1, 8(R13)
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MOVW R2, 12(R13)
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BL runtime·sigtrampgo(SB)
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// Restore callee-save registers.
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ADD $16, R13
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MOVM.IA.W (R13), [R4-R11]
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RET
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TEXT runtime·mmap(SB),NOSPLIT,$16
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MOVW addr+0(FP), R0 // arg 1 addr
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MOVW n+4(FP), R1 // arg 2 len
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MOVW prot+8(FP), R2 // arg 3 prot
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MOVW flags+12(FP), R3 // arg 4 flags
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// arg 5 (fid) and arg6 (offset_lo, offset_hi) are passed on stack
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// note the C runtime only passes the 32-bit offset_lo to us
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MOVW fd+16(FP), R4 // arg 5
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MOVW R4, 4(R13)
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MOVW off+20(FP), R5 // arg 6 lower 32-bit
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// the word at 8(R13) is skipped due to 64-bit argument alignment.
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MOVW R5, 12(R13)
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MOVW $0, R6 // higher 32-bit for arg 6
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MOVW R6, 16(R13)
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ADD $4, R13
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MOVW $SYS_mmap, R7
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SWI $0
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SUB $4, R13
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MOVW $0, R1
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MOVW.CS R0, R1 // if failed, put in R1
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MOVW.CS $0, R0
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MOVW R0, p+24(FP)
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MOVW R1, err+28(FP)
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RET
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TEXT runtime·munmap(SB),NOSPLIT,$0
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MOVW addr+0(FP), R0 // arg 1 addr
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MOVW n+4(FP), R1 // arg 2 len
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MOVW $SYS_munmap, R7
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SWI $0
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MOVW.CS $0, R8 // crash on syscall failure
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MOVW.CS R8, (R8)
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RET
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TEXT runtime·madvise(SB),NOSPLIT,$0
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MOVW addr+0(FP), R0 // arg 1 addr
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MOVW n+4(FP), R1 // arg 2 len
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MOVW flags+8(FP), R2 // arg 3 flags
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MOVW $SYS_madvise, R7
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SWI $0
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MOVW.CS $-1, R0
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MOVW R0, ret+12(FP)
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RET
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TEXT runtime·sigaltstack(SB),NOSPLIT|NOFRAME,$0
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MOVW new+0(FP), R0
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MOVW old+4(FP), R1
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MOVW $SYS_sigaltstack, R7
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SWI $0
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MOVW.CS $0, R8 // crash on syscall failure
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MOVW.CS R8, (R8)
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RET
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TEXT runtime·sigfwd(SB),NOSPLIT,$0-16
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MOVW sig+4(FP), R0
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MOVW info+8(FP), R1
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MOVW ctx+12(FP), R2
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MOVW fn+0(FP), R11
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MOVW R13, R4
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SUB $24, R13
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BIC $0x7, R13 // alignment for ELF ABI
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BL (R11)
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MOVW R4, R13
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RET
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TEXT runtime·usleep(SB),NOSPLIT,$16
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MOVW usec+0(FP), R0
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CALL runtime·usplitR0(SB)
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// 0(R13) is the saved LR, don't use it
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MOVW R0, 4(R13) // tv_sec.low
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MOVW $0, R0
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MOVW R0, 8(R13) // tv_sec.high
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MOVW $1000, R2
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MUL R1, R2
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MOVW R2, 12(R13) // tv_nsec
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MOVW $4(R13), R0 // arg 1 - rqtp
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MOVW $0, R1 // arg 2 - rmtp
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MOVW $SYS_nanosleep, R7
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SWI $0
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RET
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TEXT runtime·sysctl(SB),NOSPLIT,$0
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||||
MOVW mib+0(FP), R0 // arg 1 - name
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MOVW miblen+4(FP), R1 // arg 2 - namelen
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MOVW out+8(FP), R2 // arg 3 - old
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MOVW size+12(FP), R3 // arg 4 - oldlenp
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// arg 5 (newp) and arg 6 (newlen) are passed on stack
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ADD $20, R13
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||||
MOVW $SYS___sysctl, R7
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||||
SWI $0
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||||
SUB.CS $0, R0, R0
|
||||
SUB $20, R13
|
||||
MOVW R0, ret+24(FP)
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||||
RET
|
||||
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||||
TEXT runtime·osyield(SB),NOSPLIT|NOFRAME,$0
|
||||
MOVW $SYS_sched_yield, R7
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||||
SWI $0
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||||
RET
|
||||
|
||||
TEXT runtime·sigprocmask(SB),NOSPLIT,$0
|
||||
MOVW how+0(FP), R0 // arg 1 - how
|
||||
MOVW new+4(FP), R1 // arg 2 - set
|
||||
MOVW old+8(FP), R2 // arg 3 - oset
|
||||
MOVW $SYS_sigprocmask, R7
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||||
SWI $0
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||||
MOVW.CS $0, R8 // crash on syscall failure
|
||||
MOVW.CS R8, (R8)
|
||||
RET
|
||||
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||||
// int32 runtime·kqueue(void)
|
||||
TEXT runtime·kqueue(SB),NOSPLIT,$0
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||||
MOVW $SYS_kqueue, R7
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||||
SWI $0
|
||||
RSB.CS $0, R0
|
||||
MOVW R0, ret+0(FP)
|
||||
RET
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||||
|
||||
// int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout)
|
||||
TEXT runtime·kevent(SB),NOSPLIT,$0
|
||||
MOVW kq+0(FP), R0 // kq
|
||||
MOVW ch+4(FP), R1 // changelist
|
||||
MOVW nch+8(FP), R2 // nchanges
|
||||
MOVW ev+12(FP), R3 // eventlist
|
||||
ADD $20, R13 // pass arg 5 and 6 on stack
|
||||
MOVW $SYS_kevent, R7
|
||||
SWI $0
|
||||
RSB.CS $0, R0
|
||||
SUB $20, R13
|
||||
MOVW R0, ret+24(FP)
|
||||
RET
|
||||
|
||||
// func fcntl(fd, cmd, arg int32) (int32, int32)
|
||||
TEXT runtime·fcntl(SB),NOSPLIT,$0
|
||||
MOVW fd+0(FP), R0 // fd
|
||||
MOVW cmd+4(FP), R1 // cmd
|
||||
MOVW arg+8(FP), R2 // arg
|
||||
MOVW $SYS_fcntl, R7
|
||||
SWI $0
|
||||
MOVW $0, R1
|
||||
MOVW.CS R0, R1
|
||||
MOVW.CS $-1, R0
|
||||
MOVW R0, ret+12(FP)
|
||||
MOVW R1, errno+16(FP)
|
||||
RET
|
||||
|
||||
// TODO: this is only valid for ARMv7+
|
||||
TEXT ·publicationBarrier(SB),NOSPLIT|NOFRAME,$0-0
|
||||
B runtime·armPublicationBarrier(SB)
|
||||
|
||||
// TODO(minux): this only supports ARMv6K+.
|
||||
TEXT runtime·read_tls_fallback(SB),NOSPLIT|NOFRAME,$0
|
||||
WORD $0xee1d0f70 // mrc p15, 0, r0, c13, c0, 3
|
||||
RET
|
||||
|
||||
// func cpuset_getaffinity(level int, which int, id int64, size int, mask *byte) int32
|
||||
TEXT runtime·cpuset_getaffinity(SB), NOSPLIT, $0-28
|
||||
MOVW level+0(FP), R0
|
||||
MOVW which+4(FP), R1
|
||||
MOVW id_lo+8(FP), R2
|
||||
MOVW id_hi+12(FP), R3
|
||||
ADD $20, R13 // Pass size and mask on stack.
|
||||
MOVW $SYS_cpuset_getaffinity, R7
|
||||
SWI $0
|
||||
RSB.CS $0, R0
|
||||
SUB $20, R13
|
||||
MOVW R0, ret+24(FP)
|
||||
RET
|
||||
|
||||
// func getCntxct(physical bool) uint32
|
||||
TEXT runtime·getCntxct(SB),NOSPLIT|NOFRAME,$0-8
|
||||
MOVB runtime·goarm(SB), R11
|
||||
CMP $7, R11
|
||||
BLT 2(PC)
|
||||
DMB
|
||||
|
||||
MOVB physical+0(FP), R0
|
||||
CMP $1, R0
|
||||
B.NE 3(PC)
|
||||
|
||||
// get CNTPCT (Physical Count Register) into R0(low) R1(high)
|
||||
// mrrc 15, 0, r0, r1, cr14
|
||||
WORD $0xec510f0e
|
||||
B 2(PC)
|
||||
|
||||
// get CNTVCT (Virtual Count Register) into R0(low) R1(high)
|
||||
// mrrc 15, 1, r0, r1, cr14
|
||||
WORD $0xec510f1e
|
||||
|
||||
MOVW R0, ret+4(FP)
|
||||
RET
|
||||
|
||||
// func issetugid() int32
|
||||
TEXT runtime·issetugid(SB),NOSPLIT,$0
|
||||
MOVW $SYS_issetugid, R7
|
||||
SWI $0
|
||||
MOVW R0, ret+0(FP)
|
||||
RET
|
||||
Reference in New Issue
Block a user