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gcc_arm.S
// Copyright 2012 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. .file "gcc_arm.S" /* * 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 ARM EABI, where r4-r11 are callee-save, so they * must be saved explicitly. */ .globl crosscall1 crosscall1: push {r4, r5, r6, r7, r8, r9, r10, r11, ip, lr} mov r4, r0 mov r5, r1 mov r0, r2 // Because the assembler might target an earlier revision of the ISA // by default, we encode BLX as a .word. .word 0xe12fff35 // blx r5 // setg(g) .word 0xe12fff34 // blx r4 // fn() pop {r4, r5, r6, r7, r8, r9, r10, r11, ip, pc} #ifdef __ELF__ .section .note.GNU-stack,"",%progbits #endif
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