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// Copyright 2022 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"
// On FreeBSD argc/argv are passed in R0, not X2
TEXT _rt0_riscv64_freebsd(SB),NOSPLIT|NOFRAME,$0
ADD $8, A0, A1 // argv
MOV 0(A0), A0 // argc
JMP main(SB)
// When building with -buildmode=c-shared, this symbol is called when the shared
// library is loaded.
TEXT _rt0_riscv64_freebsd_lib(SB),NOSPLIT,$224
// Preserve callee-save registers, along with X1 (LR).
MOV X1, (8*3)(X2)
MOV X8, (8*4)(X2)
MOV X9, (8*5)(X2)
MOV X18, (8*6)(X2)
MOV X19, (8*7)(X2)
MOV X20, (8*8)(X2)
MOV X21, (8*9)(X2)
MOV X22, (8*10)(X2)
MOV X23, (8*11)(X2)
MOV X24, (8*12)(X2)
MOV X25, (8*13)(X2)
MOV X26, (8*14)(X2)
MOV g, (8*15)(X2)
MOVD F8, (8*16)(X2)
MOVD F9, (8*17)(X2)
MOVD F18, (8*18)(X2)
MOVD F19, (8*19)(X2)
MOVD F20, (8*20)(X2)
MOVD F21, (8*21)(X2)
MOVD F22, (8*22)(X2)
MOVD F23, (8*23)(X2)
MOVD F24, (8*24)(X2)
MOVD F25, (8*25)(X2)
MOVD F26, (8*26)(X2)
MOVD F27, (8*27)(X2)
// Initialize g as nil in case of using g later e.g. sigaction in cgo_sigaction.go
MOV X0, g
MOV A0, _rt0_riscv64_freebsd_lib_argc<>(SB)
MOV A1, _rt0_riscv64_freebsd_lib_argv<>(SB)
// Synchronous initialization.
MOV $runtime·libpreinit(SB), T0
JALR RA, T0
// Create a new thread to do the runtime initialization and return.
MOV _cgo_sys_thread_create(SB), T0
BEQZ T0, nocgo
MOV $_rt0_riscv64_freebsd_lib_go(SB), A0
MOV $0, A1
JALR RA, T0
JMP restore
nocgo:
MOV $0x800000, A0 // stacksize = 8192KB
MOV $_rt0_riscv64_freebsd_lib_go(SB), A1
MOV A0, 8(X2)
MOV A1, 16(X2)
MOV $runtime·newosproc0(SB), T0
JALR RA, T0
restore:
// Restore callee-save registers, along with X1 (LR).
MOV (8*3)(X2), X1
MOV (8*4)(X2), X8
MOV (8*5)(X2), X9
MOV (8*6)(X2), X18
MOV (8*7)(X2), X19
MOV (8*8)(X2), X20
MOV (8*9)(X2), X21
MOV (8*10)(X2), X22
MOV (8*11)(X2), X23
MOV (8*12)(X2), X24
MOV (8*13)(X2), X25
MOV (8*14)(X2), X26
MOV (8*15)(X2), g
MOVD (8*16)(X2), F8
MOVD (8*17)(X2), F9
MOVD (8*18)(X2), F18
MOVD (8*19)(X2), F19
MOVD (8*20)(X2), F20
MOVD (8*21)(X2), F21
MOVD (8*22)(X2), F22
MOVD (8*23)(X2), F23
MOVD (8*24)(X2), F24
MOVD (8*25)(X2), F25
MOVD (8*26)(X2), F26
MOVD (8*27)(X2), F27
RET
TEXT _rt0_riscv64_freebsd_lib_go(SB),NOSPLIT,$0
MOV _rt0_riscv64_freebsd_lib_argc<>(SB), A0
MOV _rt0_riscv64_freebsd_lib_argv<>(SB), A1
MOV $runtime·rt0_go(SB), T0
JALR ZERO, T0
DATA _rt0_riscv64_freebsd_lib_argc<>(SB)/8, $0
GLOBL _rt0_riscv64_freebsd_lib_argc<>(SB),NOPTR, $8
DATA _rt0_riscv64_freebsd_lib_argv<>(SB)/8, $0
GLOBL _rt0_riscv64_freebsd_lib_argv<>(SB),NOPTR, $8
TEXT main(SB),NOSPLIT|NOFRAME,$0
MOV $runtime·rt0_go(SB), T0
JALR ZERO, T0
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