Hi,
this patch adds delayed-load-library feature for x64 Windows targets.
As this feature is dependent to used runtime, I omitted here a special
testcase (as was done for x86 Windows).
ChangeLog binutils
2012-02-15 Kai Tietz<ktietz@redhat.com>
PR binutils/13682
* NEWS: Mention new feature.
* dlltool.c (i386_x64_dljtab): New stub-code for x64
delayed-load feature.
(i386_x64_trampoline): New trampoline-code for x64
delayed-load feature.
(make_one_lib_file): Add support for x64 delayed-load
feature.
(make_delay_head): Likewise.
Tested for i686-w64-mingw32, and x86_64-w64-mingw32. Also checked for
regressions for i686-pc-cygwin.
Ok for apply?
Regards,
Kai
Index: binutils/NEWS
===================================================================
RCS file: /cvs/src/src/binutils/NEWS,v
retrieving revision 1.106
diff -u -r1.106 NEWS
--- binutils/NEWS 2 Nov 2011 03:09:01 -0000 1.106
+++ binutils/NEWS 15 Feb 2012 10:34:02 -0000
@@ -1,5 +1,7 @@
-*- text -*-
+* Add support for x64 Windows target of the delayed-load-library.
+
* Add support for the Renesas RL78 architecture.
Changes in 2.22:
Index: binutils/dlltool.c
===================================================================
RCS file: /cvs/src/src/binutils/dlltool.c,v
retrieving revision 1.104
diff -u -r1.104 dlltool.c
--- binutils/dlltool.c 9 Feb 2012 04:51:44 -0000 1.104
+++ binutils/dlltool.c 15 Feb 2012 10:34:03 -0000
@@ -515,6 +515,14 @@
0xE9, 0x00, 0x00, 0x00, 0x00 /* jmp __tailMerge__dllname */
};
+static const unsigned char i386_x64_dljtab[] =
+{
+ 0xFF, 0x25, 0x00, 0x00, 0x00, 0x00, /* jmp __imp__function */
+ 0x48, 0x8d, 0x05, /* leaq rax, (__imp__function) */
+ 0x00, 0x00, 0x00, 0x00,
+ 0xE9, 0x00, 0x00, 0x00, 0x00 /* jmp __tailMerge__dllname */
+};
+
static const unsigned char arm_jtab[] =
{
0x00, 0xc0, 0x9f, 0xe5, /* ldr ip, [pc] */
@@ -591,6 +599,22 @@
"\tpopl %%ecx\n"
"\tjmp *%%eax\n";
+static const char i386_x64_trampoline[] =
+ "\tpushq %%rcx\n"
+ "\tpushq %%rdx\n"
+ "\tpushq %%r8\n"
+ "\tpushq %%r9\n"
+ "\tsubq $40, %%rsp\n"
+ "\tmovq %%rax, %%rdx\n"
+ "\tleaq __DELAY_IMPORT_DESCRIPTOR_%s(%%rip), %%rcx\n"
+ "\tcall __delayLoadHelper2\n"
+ "\taddq $40, %%rsp\n"
+ "\tpopq %%r9\n"
+ "\tpopq %%r8\n"
+ "\tpopq %%rdx\n"
+ "\tpopq %%rcx\n"
+ "\tjmp *%%rax\n";
+
struct mac
{
const char *type;
@@ -735,7 +759,7 @@
"jmp *", ".global", ".space", ".align\t2",".align\t4", "",
"pe-x86-64",bfd_arch_i386,
i386_jtab, sizeof (i386_jtab), 2,
- i386_dljtab, sizeof (i386_dljtab), 2, 7, 12, i386_trampoline
+ i386_x64_dljtab, sizeof (i386_x64_dljtab), 2, 9, 14, i386_x64_trampoline
}
,
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
@@ -2609,9 +2633,14 @@
if (delay)
{
- rel2->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32);
+ if (machine == MX86)
+ rel2->howto = bfd_reloc_type_lookup (abfd,
+ BFD_RELOC_32_PCREL);
+ else
+ rel2->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32);
rel2->sym_ptr_ptr = rel->sym_ptr_ptr;
- rel3->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32_PCREL);
+ rel3->howto = bfd_reloc_type_lookup (abfd,
+ BFD_RELOC_32_PCREL);
rel3->sym_ptr_ptr = iname_lab_pp;
}
@@ -2623,10 +2652,11 @@
case IDATA5:
if (delay)
{
- si->data = xmalloc (4);
- si->size = 4;
+ si->size = create_for_pep ? 8 : 4;
+ si->data = xmalloc (si->size);
sec->reloc_count = 1;
memset (si->data, 0, si->size);
+ /* Point after jmp [__imp_...] instruction. */
si->data[0] = 6;
rel = xmalloc (sizeof (arelent));
rpp = xmalloc (sizeof (arelent *) * 2);
@@ -2634,7 +2664,10 @@
rpp[1] = 0;
rel->address = 0;
rel->addend = 0;
- rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32);
+ if (create_for_pep)
+ rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_64);
+ else
+ rel->howto = bfd_reloc_type_lookup (abfd, BFD_RELOC_32);
rel->sym_ptr_ptr = secdata[TEXT].sympp;
sec->orelocation = rpp;
break;
@@ -3005,6 +3038,8 @@
fprintf (f, "\n.section .data\n");
fprintf (f, "__DLL_HANDLE_%s:\n", imp_name_lab);
fprintf (f, "\t%s\t0\t%s Handle\n", ASM_LONG, ASM_C);
+ if (create_for_pep)
+ fprintf (f, "\t%s\t0\n", ASM_LONG);
fprintf (f, "\n");
fprintf (f, "%sStuff for compatibility\n", ASM_C);
@@ -3013,11 +3048,10 @@
{
fprintf (f, "\t.section\t.idata$5\n");
/* NULL terminating list. */
-#ifdef DLLTOOL_MX86_64
- fprintf (f,"\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG);
-#else
- fprintf (f,"\t%s\t0\n", ASM_LONG);
-#endif
+ if (create_for_pep)
+ fprintf (f,"\t%s\t0\n\t%s\t0\n", ASM_LONG, ASM_LONG);
+ else
+ fprintf (f,"\t%s\t0\n", ASM_LONG);
fprintf (f, "__IAT_%s:\n", imp_name_lab);
}
@@ -3025,6 +3059,8 @@
{
fprintf (f, "\t.section\t.idata$4\n");
fprintf (f, "\t%s\t0\n", ASM_LONG);
+ if (create_for_pep)
+ fprintf (f, "\t%s\t0\n", ASM_LONG);
fprintf (f, "\t.section\t.idata$4\n");
fprintf (f, "__INT_%s:\n", imp_name_lab);
}