diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2017-02-26 15:20:59 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2017-02-26 15:20:59 +0000 |
| commit | 27678cac5cd59c78540cfca1e18b9c092d42a0ee (patch) | |
| tree | 53d588f402bf9760200c867bc5f39f5dca14c2fb /lib/csu | |
| parent | fef72b64bce0c9903c16a8cbff8996462c4b66d1 (diff) | |
Use a long branch (using movw/movt) to implement MD_SECT_CALL_FUNC.
Necessary (but perhaps not suffcient) to build large binaries on arm.
ok guenther@
Diffstat (limited to 'lib/csu')
| -rw-r--r-- | lib/csu/arm/md_init.h | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/lib/csu/arm/md_init.h b/lib/csu/arm/md_init.h index 30e7c991473..b64efb97a1a 100644 --- a/lib/csu/arm/md_init.h +++ b/lib/csu/arm/md_init.h @@ -1,4 +1,4 @@ -/* $OpenBSD: md_init.h,v 1.10 2017/01/21 00:45:13 guenther Exp $ */ +/* $OpenBSD: md_init.h,v 1.11 2017/02/26 15:20:58 kettenis Exp $ */ /*- * Copyright (c) 2001 Ross Harvey @@ -55,23 +55,13 @@ " .int "#value" \n" \ " .previous") -#ifdef __PIC__ - /* This nastyness derived from gcc3 output */ #define MD_SECT_CALL_FUNC(section, func) \ __asm (".section "#section", \"ax\" \n" \ - " bl " #func "(PLT) \n" \ + " movw r0, #:lower16:" #func "- 1f - 8 \n" \ + " movt r0, #:upper16:" #func "- 1f - 8 \n" \ + "1: add r0, r0, pc \n" \ + " blx r0 \n" \ " .previous") -#else -#define MD_SECT_CALL_FUNC(section, func) \ - __asm (".section "#section", \"ax\" \n" \ - " adr r0, 1f \n" \ - " ldr r0, [r0] \n" \ - " adr lr, 2f \n" \ - " mov pc, r0 \n" \ - "1: .word " #func " \n" \ - "2: \n" \ - " .previous") -#endif #define MD_SECTION_PROLOGUE(sect, entry_pt) \ __asm ( \ |