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| // Copyright 2016 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.
|
| // +build mips mipsle
|
| /*
| * void crosscall1(void (*fn)(void), void (*setg_gcc)(void *g), void *g)
| *
| * Calling into the gc tool chain, where all registers are caller save.
| * Called from standard MIPS O32 ABI, where $16-$23, $30, and $f20-$f31
| * are callee-save, so they must be saved explicitly, along with $31 (LR).
| */
| .globl crosscall1
| .set noat
| crosscall1:
| #ifndef __mips_soft_float
| addiu $29, $29, -88
| #else
| addiu $29, $29, -40 // For soft-float, no need to make room for FP registers
| #endif
| sw $31, 0($29)
| sw $16, 4($29)
| sw $17, 8($29)
| sw $18, 12($29)
| sw $19, 16($29)
| sw $20, 20($29)
| sw $21, 24($29)
| sw $22, 28($29)
| sw $23, 32($29)
| sw $30, 36($29)
|
| #ifndef __mips_soft_float
| sdc1 $f20, 40($29)
| sdc1 $f22, 48($29)
| sdc1 $f24, 56($29)
| sdc1 $f26, 64($29)
| sdc1 $f28, 72($29)
| sdc1 $f30, 80($29)
| #endif
| move $20, $4 // save R4
| move $4, $6
| jalr $5 // call setg_gcc
| jalr $20 // call fn
|
| lw $16, 4($29)
| lw $17, 8($29)
| lw $18, 12($29)
| lw $19, 16($29)
| lw $20, 20($29)
| lw $21, 24($29)
| lw $22, 28($29)
| lw $23, 32($29)
| lw $30, 36($29)
| #ifndef __mips_soft_float
| ldc1 $f20, 40($29)
| ldc1 $f22, 48($29)
| ldc1 $f24, 56($29)
| ldc1 $f26, 64($29)
| ldc1 $f28, 72($29)
| ldc1 $f30, 80($29)
| #endif
| lw $31, 0($29)
| #ifndef __mips_soft_float
| addiu $29, $29, 88
| #else
| addiu $29, $29, 40
| #endif
| jr $31
|
| .set at
|
| #ifdef __ELF__
| .section .note.GNU-stack,"",%progbits
| #endif
|
|
