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[Bug gold/22221] add --no-dynamic-linker option
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From: |
markus at trippelsdorf dot de |
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Subject: |
[Bug gold/22221] add --no-dynamic-linker option |
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Date: |
Wed, 27 Sep 2017 14:44:36 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=22221
--- Comment #2 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
The following produces an static-pie executable that crashes on startup
when it calls __pthread_initialize_minimal():
diff --git a/gold/gold.cc b/gold/gold.cc
index a76d155f940a..a2dd31816acc 100644
--- a/gold/gold.cc
+++ b/gold/gold.cc
@@ -607,13 +607,6 @@ queue_middle_tasks(const General_options& options,
(!input_objects->any_dynamic()
&& !parameters->options().output_is_position_independent());
set_parameters_doing_static_link(doing_static_link);
- if (!doing_static_link && options.is_static())
- {
- // We print out just the first .so we see; there may be others.
- gold_assert(input_objects->dynobj_begin() !=
input_objects->dynobj_end());
- gold_error(_("cannot mix -static with dynamic object %s"),
- (*input_objects->dynobj_begin())->name().c_str());
- }
if (!doing_static_link && parameters->options().relocatable())
gold_fatal(_("cannot mix -r with dynamic object %s"),
(*input_objects->dynobj_begin())->name().c_str());
diff --git a/gold/layout.cc b/gold/layout.cc
index 5f25faea5532..5c531e470b66 100644
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -2730,7 +2730,8 @@ Layout::finalize(const Input_objects* input_objects,
Symbol_table* symtab,
// Create the PT_PHDR segment which will hold the program
// headers.
- if (!this->script_options_->saw_phdrs_clause())
+ if (!this->script_options_->saw_phdrs_clause()
+ && !parameters->options().no_dynamic_linker())
phdr_seg = this->make_output_segment(elfcpp::PT_PHDR, elfcpp::PF_R);
// Create the dynamic symbol table, including the hash table.
@@ -2749,7 +2750,8 @@ Layout::finalize(const Input_objects* input_objects,
Symbol_table* symtab,
// if we saw a .interp section in an input file.
if ((!parameters->options().shared()
|| parameters->options().dynamic_linker() != NULL)
- && this->interp_segment_ == NULL)
+ && this->interp_segment_ == NULL
+ && !parameters->options().no_dynamic_linker())
this->create_interp(target);
// Finish the .dynamic section to hold the dynamic data, and put
diff --git a/gold/options.cc b/gold/options.cc
index ed63b6f04feb..15e77d6c2b67 100644
--- a/gold/options.cc
+++ b/gold/options.cc
@@ -1290,8 +1290,6 @@ General_options::finalize()
gold_fatal(_("-shared and -static are incompatible"));
if (this->shared() && this->pie())
gold_fatal(_("-shared and -pie are incompatible"));
- if (this->pie() && this->is_static())
- gold_fatal(_("-pie and -static are incompatible"));
if (this->shared() && this->relocatable())
gold_fatal(_("-shared and -r are incompatible"));
diff --git a/gold/options.h b/gold/options.h
index 93f81b29afcc..2b660c1e6d79 100644
--- a/gold/options.h
+++ b/gold/options.h
@@ -1050,6 +1050,9 @@ class General_options
N_("Do not page align data, do not make text readonly"),
N_("Page align data, make text readonly"));
+ DEFINE_bool(no_dynamic_linker, options::TWO_DASHES, '\0', false,
+ N_("Produce an executable with no program interpreter header"),
NULL);
+
DEFINE_bool(no_keep_memory, options::TWO_DASHES, '\0', false,
N_("Use less memory and more disk I/O "
=================================================================================
ld.bfd:
/* Initialize libpthread if linked in. */
if (__pthread_initialize_minimal != NULL)
91d6: 48 83 3d 32 90 09 00 cmpq $0x0,0x99032(%rip) #
a2210 <__pthread_initialize_minimal>
91dd: 00
91de: 74 05 je 91e5 <__libc_start_main+0x245>
__pthread_initialize_minimal ();
91e0: e8 9b f4 ff ff callq 8680
<address@hidden>
Disassembly of section .plt:
0000000000008660 <address@hidden>:
8660: ff 35 ca 9c 09 00 pushq 0x99cca(%rip) # a2330
<_GLOBAL_OFFSET_TABLE_+0x8>
8666: ff 25 cc 9c 09 00 jmpq *0x99ccc(%rip) # a2338
<_GLOBAL_OFFSET_TABLE_+0x10>
866c: 90 nop
866d: 90 nop
866e: 90 nop
866f: 90 nop
0000000000008670 <address@hidden>:
8670: ff 25 ca 9c 09 00 jmpq *0x99cca(%rip) # a2340
<__cxa_finalize>
8676: 68 00 00 00 00 pushq $0x0
867b: e9 e0 ff ff ff jmpq 8660 <_init+0x20>
0000000000008680 <address@hidden>:
8680: ff 25 c2 9c 09 00 jmpq *0x99cc2(%rip) # a2348
<__pthread_initialize_minimal>
8686: 68 01 00 00 00 pushq $0x1
868b: e9 d0 ff ff ff jmpq 8660 <_init+0x20>
==============================================================================
ld.gold:
/* Initialize libpthread if linked in. */
if (__pthread_initialize_minimal != NULL)
8436: 48 83 3d 72 ae 29 00 cmpq $0x0,0x29ae72(%rip) #
2a32b0 <.got+0x98>
843d: 00
843e: 74 05 je 8445 <__libc_start_main+0x245>
__pthread_initialize_minimal ();
8440: e8 c3 f5 ff ff callq 7a08 <.plt.got+0x48>
Disassembly of section .plt:
0000000000007930 <.plt>:
7930: ff 35 ea b9 29 00 pushq 0x29b9ea(%rip) # 2a3320
<_GLOBAL_OFFSET_TABLE_+0x8>
7936: ff 25 ec b9 29 00 jmpq *0x29b9ec(%rip) # 2a3328
<_GLOBAL_OFFSET_TABLE_+0x10>
793c: 0f 1f 40 00 nopl 0x0(%rax)
7940: ff 25 ea b9 29 00 jmpq *0x29b9ea(%rip) # 2a3330
<_GLOBAL_OFFSET_TABLE_+0x18>
7946: 68 00 00 00 00 pushq $0x0
794b: e9 00 00 00 00 jmpq 7950 <.plt+0x20>
7950: ff 25 e2 b9 29 00 jmpq *0x29b9e2(%rip) # 2a3338
<_GLOBAL_OFFSET_TABLE_+0x20>
7956: 68 00 00 00 00 pushq $0x0
795b: e9 00 00 00 00 jmpq 7960 <.plt+0x30>
7960: ff 25 da b9 29 00 jmpq *0x29b9da(%rip) # 2a3340
<_GLOBAL_OFFSET_TABLE_+0x28>
7966: 68 00 00 00 00 pushq $0x0
796b: e9 00 00 00 00 jmpq 7970 <.plt+0x40>
7970: ff 25 d2 b9 29 00 jmpq *0x29b9d2(%rip) # 2a3348
<_GLOBAL_OFFSET_TABLE_+0x30>
7976: 68 00 00 00 00 pushq $0x0
797b: e9 00 00 00 00 jmpq 7980 <.plt+0x50>
7980: ff 25 ca b9 29 00 jmpq *0x29b9ca(%rip) # 2a3350
<_GLOBAL_OFFSET_TABLE_+0x38>
7986: 68 00 00 00 00 pushq $0x0
798b: e9 00 00 00 00 jmpq 7990 <.plt+0x60>
7990: ff 25 c2 b9 29 00 jmpq *0x29b9c2(%rip) # 2a3358
<_GLOBAL_OFFSET_TABLE_+0x40>
7996: 68 00 00 00 00 pushq $0x0
799b: e9 00 00 00 00 jmpq 79a0 <.plt+0x70>
79a0: ff 25 ba b9 29 00 jmpq *0x29b9ba(%rip) # 2a3360
<_GLOBAL_OFFSET_TABLE_+0x48>
79a6: 68 00 00 00 00 pushq $0x0
79ab: e9 00 00 00 00 jmpq 79b0 <.plt+0x80>
79b0: ff 25 b2 b9 29 00 jmpq *0x29b9b2(%rip) # 2a3368
<_GLOBAL_OFFSET_TABLE_+0x50>
79b6: 68 00 00 00 00 pushq $0x0
79bb: e9 00 00 00 00 jmpq 79c0 <.plt.got>
Disassembly of section .plt.got:
00000000000079c0 <.plt.got>:
79c0: ff 25 5b b8 29 00 jmpq *0x29b85b(%rip) # 2a3221
<.got+0x9>
79c6: 66 90 xchg %ax,%ax
79c8: ff 25 5b b8 29 00 jmpq *0x29b85b(%rip) # 2a3229
<.got+0x11>
79ce: 66 90 xchg %ax,%ax
79d0: ff 25 63 b8 29 00 jmpq *0x29b863(%rip) # 2a3239
<.got+0x21>
79d6: 66 90 xchg %ax,%ax
79d8: ff 25 73 b8 29 00 jmpq *0x29b873(%rip) # 2a3251
<.got+0x39>
79de: 66 90 xchg %ax,%ax
79e0: ff 25 83 b8 29 00 jmpq *0x29b883(%rip) # 2a3269
<.got+0x51>
79e6: 66 90 xchg %ax,%ax
79e8: ff 25 9b b8 29 00 jmpq *0x29b89b(%rip) # 2a3289
<.got+0x71>
79ee: 66 90 xchg %ax,%ax
79f0: ff 25 9b b8 29 00 jmpq *0x29b89b(%rip) # 2a3291
<.got+0x79>
79f6: 66 90 xchg %ax,%ax
79f8: ff 25 a3 b8 29 00 jmpq *0x29b8a3(%rip) # 2a32a1
<.got+0x89>
79fe: 66 90 xchg %ax,%ax
7a00: ff 25 a3 b8 29 00 jmpq *0x29b8a3(%rip) # 2a32a9
<.got+0x91>
7a06: 66 90 xchg %ax,%ax
7a08: ff 25 a3 b8 29 00 jmpq *0x29b8a3(%rip) # 2a32b1
<.got+0x99>
7a0e: 66 90 xchg %ax,%ax
7a10: ff 25 db b8 29 00 jmpq *0x29b8db(%rip) # 2a32f1
<.got+0xd9>
7a16: 66 90 xchg %ax,%ax
7a18: ff 25 eb b8 29 00 jmpq *0x29b8eb(%rip) # 2a3309
<.got+0xf1>
7a1e: 66 90 xchg %ax,%ax
--
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