authorgravatar for kubkon@jakubkonka.comJakub Konka <kubkon@jakubkonka.com> 2023-10-07 10:47:44+02:00
committergravatar for kubkon@jakubkonka.comJakub Konka <kubkon@jakubkonka.com> 2023-10-16 19:33:05+02:00
logc940735c4d091d77594deb15226bbd67cf36cdf2
tree430cda0620a8021f2e7205ea0bb395ca0b6a8122
parent149dd82d5465abc136d9ef2f4270ed041a3b6e3e

elf: port more linker tests

1 files changed, 115 insertions(+), 25 deletions(-)

test/link/elf.zig+115-25
......@@ -31,6 +31,7 @@ pub fn build(b: *Build) void {
3131 // elf_step.dependOn(testLinkingZig(b, .{ .use_llvm = false }));
3232
3333 // Exercise linker with LLVM backend
34 elf_step.dependOn(testAbsSymbols(b, .{ .target = musl_target }));
3435 elf_step.dependOn(testCommonSymbols(b, .{ .target = musl_target }));
3536 elf_step.dependOn(testCommonSymbolsInArchive(b, .{ .target = musl_target }));
3637 elf_step.dependOn(testEmptyObject(b, .{ .target = musl_target }));
......@@ -41,6 +42,7 @@ pub fn build(b: *Build) void {
4142 elf_step.dependOn(testTlsStatic(b, .{ .target = musl_target }));
4243
4344 elf_step.dependOn(testAsNeeded(b, .{ .target = glibc_target, .dynamic_linker = dynamic_linker }));
45 elf_step.dependOn(testCanonicalPlt(b, .{ .target = glibc_target, .dynamic_linker = dynamic_linker }));
4446 elf_step.dependOn(testDsoPlt(b, .{ .target = glibc_target, .dynamic_linker = dynamic_linker }));
4547 elf_step.dependOn(testDsoUndef(b, .{ .target = glibc_target, .dynamic_linker = dynamic_linker }));
4648 elf_step.dependOn(testLargeAlignmentDso(b, .{ .target = glibc_target, .dynamic_linker = dynamic_linker }));
......@@ -50,6 +52,46 @@ pub fn build(b: *Build) void {
5052 }
5153}
5254
55fn testAbsSymbols(b: *Build, opts: Options) *Step {
56 const test_step = addTestStep(b, "abs-symbols", opts);
57
58 const obj = addObject(b, "obj", opts);
59 addAsmSourceBytes(obj,
60 \\.globl foo
61 \\foo = 0x800008
62 );
63
64 const exe = addExecutable(b, "test", opts);
65 addCSourceBytes(exe,
66 \\#include <signal.h>
67 \\#include <stdio.h>
68 \\#include <stdlib.h>
69 \\#include <ucontext.h>
70 \\#include <assert.h>
71 \\void handler(int signum, siginfo_t *info, void *ptr) {
72 \\ assert((size_t)info->si_addr == 0x800008);
73 \\ exit(0);
74 \\}
75 \\extern int foo;
76 \\int main() {
77 \\ struct sigaction act;
78 \\ act.sa_flags = SA_SIGINFO | SA_RESETHAND;
79 \\ act.sa_sigaction = handler;
80 \\ sigemptyset(&act.sa_mask);
81 \\ sigaction(SIGSEGV, &act, 0);
82 \\ foo = 5;
83 \\ return 0;
84 \\}
85 , &.{});
86 exe.addObject(obj);
87 exe.linkLibC();
88
89 const run = addRunArtifact(exe);
90 test_step.dependOn(&run.step);
91
92 return test_step;
93}
94
5395fn testAsNeeded(b: *Build, opts: Options) *Step {
5496 const test_step = addTestStep(b, "as-needed", opts);
5597
......@@ -62,7 +104,7 @@ fn testAsNeeded(b: *Build, opts: Options) *Step {
62104 \\ return 0;
63105 \\}
64106 , &.{});
65 main_o.is_linking_libc = true;
107 main_o.linkLibC();
66108
67109 const libfoo = addSharedLibrary(b, "foo", opts);
68110 addCSourceBytes(libfoo, "int foo() { return 42; }", &.{"-fPIC"});
......@@ -88,7 +130,7 @@ fn testAsNeeded(b: *Build, opts: Options) *Step {
88130 exe.linkSystemLibrary2("baz", .{ .needed = true });
89131 exe.addLibraryPath(libbaz.getEmittedBinDirectory());
90132 exe.addRPath(libbaz.getEmittedBinDirectory());
91 exe.is_linking_libc = true;
133 exe.linkLibC();
92134
93135 const run = addRunArtifact(exe);
94136 run.expectStdOutEqual("42\n");
......@@ -114,7 +156,7 @@ fn testAsNeeded(b: *Build, opts: Options) *Step {
114156 exe.linkSystemLibrary2("baz", .{ .needed = false });
115157 exe.addLibraryPath(libbaz.getEmittedBinDirectory());
116158 exe.addRPath(libbaz.getEmittedBinDirectory());
117 exe.is_linking_libc = true;
159 exe.linkLibC();
118160
119161 const run = addRunArtifact(exe);
120162 run.expectStdOutEqual("42\n");
......@@ -132,6 +174,54 @@ fn testAsNeeded(b: *Build, opts: Options) *Step {
132174 return test_step;
133175}
134176
177fn testCanonicalPlt(b: *Build, opts: Options) *Step {
178 const test_step = addTestStep(b, "canonical-plt", opts);
179
180 const dso = addSharedLibrary(b, "a", opts);
181 addCSourceBytes(dso,
182 \\void *foo() {
183 \\ return foo;
184 \\}
185 \\void *bar() {
186 \\ return bar;
187 \\}
188 , &.{"-fPIC"});
189
190 const b_o = addObject(b, "obj", opts);
191 addCSourceBytes(b_o,
192 \\void *bar();
193 \\void *baz() {
194 \\ return bar;
195 \\}
196 , &.{"-fPIC"});
197
198 const main_o = addObject(b, "main", opts);
199 addCSourceBytes(main_o,
200 \\#include <assert.h>
201 \\void *foo();
202 \\void *bar();
203 \\void *baz();
204 \\int main() {
205 \\ assert(foo == foo());
206 \\ assert(bar == bar());
207 \\ assert(bar == baz());
208 \\}
209 , &.{"-fno-PIC"});
210 main_o.linkLibC();
211
212 const exe = addExecutable(b, "main", opts);
213 exe.addObject(main_o);
214 exe.addObject(b_o);
215 exe.linkLibrary(dso);
216 exe.linkLibC();
217 exe.pie = false;
218
219 const run = addRunArtifact(exe);
220 test_step.dependOn(&run.step);
221
222 return test_step;
223}
224
135225fn testCommonSymbols(b: *Build, opts: Options) *Step {
136226 const test_step = addTestStep(b, "common-symbols", opts);
137227
......@@ -150,7 +240,7 @@ fn testCommonSymbols(b: *Build, opts: Options) *Step {
150240 \\ printf("%d %d %d\n", foo, bar, baz);
151241 \\}
152242 , &.{"-fcommon"});
153 exe.is_linking_libc = true;
243 exe.linkLibC();
154244
155245 const run = addRunArtifact(exe);
156246 run.expectStdOutEqual("0 5 42\n");
......@@ -173,7 +263,7 @@ fn testCommonSymbolsInArchive(b: *Build, opts: Options) *Step {
173263 \\ printf("%d %d %d %d\n", foo, bar, baz, two ? two() : -1);
174264 \\}
175265 , &.{"-fcommon"});
176 a_o.is_linking_libc = true;
266 a_o.linkLibC();
177267
178268 const b_o = addObject(b, "b", opts);
179269 addCSourceBytes(b_o, "int foo = 5;", &.{"-fcommon"});
......@@ -196,7 +286,7 @@ fn testCommonSymbolsInArchive(b: *Build, opts: Options) *Step {
196286 const exe = addExecutable(b, "test", opts);
197287 exe.addObject(a_o);
198288 exe.linkLibrary(lib);
199 exe.is_linking_libc = true;
289 exe.linkLibC();
200290
201291 const run = addRunArtifact(exe);
202292 run.expectStdOutEqual("5 0 0 -1\n");
......@@ -218,7 +308,7 @@ fn testCommonSymbolsInArchive(b: *Build, opts: Options) *Step {
218308 const exe = addExecutable(b, "test", opts);
219309 exe.addObject(a_o);
220310 exe.linkLibrary(lib);
221 exe.is_linking_libc = true;
311 exe.linkLibC();
222312
223313 const run = addRunArtifact(exe);
224314 run.expectStdOutEqual("5 0 7 2\n");
......@@ -245,7 +335,7 @@ fn testDsoPlt(b: *Build, opts: Options) *Step {
245335 \\ real_hello();
246336 \\}
247337 , &.{"-fPIC"});
248 dso.is_linking_libc = true;
338 dso.linkLibC();
249339
250340 const exe = addExecutable(b, "test", opts);
251341 addCSourceBytes(exe,
......@@ -259,7 +349,7 @@ fn testDsoPlt(b: *Build, opts: Options) *Step {
259349 \\}
260350 , &.{});
261351 exe.linkLibrary(dso);
262 exe.is_linking_libc = true;
352 exe.linkLibC();
263353
264354 const run = addRunArtifact(exe);
265355 run.expectStdOutEqual("Hello WORLD\n");
......@@ -277,7 +367,7 @@ fn testDsoUndef(b: *Build, opts: Options) *Step {
277367 \\int bar = 5;
278368 \\int baz() { return foo; }
279369 , &.{"-fPIC"});
280 dso.is_linking_libc = true;
370 dso.linkLibC();
281371
282372 const obj = addObject(b, "obj", opts);
283373 addCSourceBytes(obj, "int foo = 3;", &.{});
......@@ -294,7 +384,7 @@ fn testDsoUndef(b: *Build, opts: Options) *Step {
294384 \\ return bar - 5;
295385 \\}
296386 , &.{});
297 exe.is_linking_libc = true;
387 exe.linkLibC();
298388
299389 const run = addRunArtifact(exe);
300390 run.expectExitCode(0);
......@@ -314,7 +404,7 @@ fn testEmptyObject(b: *Build, opts: Options) *Step {
314404 const exe = addExecutable(b, "test", opts);
315405 addCSourceBytes(exe, "int main() { return 0; }", &.{});
316406 addCSourceBytes(exe, "", &.{});
317 exe.is_linking_libc = true;
407 exe.linkLibC();
318408
319409 const run = addRunArtifact(exe);
320410 run.expectExitCode(0);
......@@ -345,15 +435,15 @@ fn testGcSections(b: *Build, opts: Options) *Step {
345435 , &.{});
346436 obj.link_function_sections = true;
347437 obj.link_data_sections = true;
348 obj.is_linking_libc = true;
349 obj.is_linking_libcpp = true;
438 obj.linkLibC();
439 obj.linkLibCpp();
350440
351441 {
352442 const exe = addExecutable(b, "test", opts);
353443 exe.addObject(obj);
354444 exe.link_gc_sections = false;
355 exe.is_linking_libc = true;
356 exe.is_linking_libcpp = true;
445 exe.linkLibC();
446 exe.linkLibCpp();
357447
358448 const run = addRunArtifact(exe);
359449 run.expectStdOutEqual("1 2\n");
......@@ -383,8 +473,8 @@ fn testGcSections(b: *Build, opts: Options) *Step {
383473 const exe = addExecutable(b, "test", opts);
384474 exe.addObject(obj);
385475 exe.link_gc_sections = true;
386 exe.is_linking_libc = true;
387 exe.is_linking_libcpp = true;
476 exe.linkLibC();
477 exe.linkLibCpp();
388478
389479 const run = addRunArtifact(exe);
390480 run.expectStdOutEqual("1 2\n");
......@@ -434,7 +524,7 @@ fn testLargeAlignmentDso(b: *Build, opts: Options) *Step {
434524 \\}
435525 , &.{"-fPIC"});
436526 dso.link_function_sections = true;
437 dso.is_linking_libc = true;
527 dso.linkLibC();
438528
439529 const check = dso.checkObject();
440530 check.checkInSymtab();
......@@ -451,7 +541,7 @@ fn testLargeAlignmentDso(b: *Build, opts: Options) *Step {
451541 \\int main() { greet(); }
452542 , &.{});
453543 exe.linkLibrary(dso);
454 exe.is_linking_libc = true;
544 exe.linkLibC();
455545
456546 const run = addRunArtifact(exe);
457547 run.expectStdOutEqual("Hello world");
......@@ -485,7 +575,7 @@ fn testLargeAlignmentExe(b: *Build, opts: Options) *Step {
485575 \\}
486576 , &.{});
487577 exe.link_function_sections = true;
488 exe.is_linking_libc = true;
578 exe.linkLibC();
489579
490580 const run = addRunArtifact(exe);
491581 run.expectStdOutEqual("Hello world");
......@@ -514,7 +604,7 @@ fn testLinkingC(b: *Build, opts: Options) *Step {
514604 \\ return 0;
515605 \\}
516606 , &.{});
517 exe.is_linking_libc = true;
607 exe.linkLibC();
518608
519609 const run = addRunArtifact(exe);
520610 run.expectStdOutEqual("Hello World!\n");
......@@ -543,8 +633,8 @@ fn testLinkingCpp(b: *Build, opts: Options) *Step {
543633 \\ return 0;
544634 \\}
545635 , &.{});
546 exe.is_linking_libc = true;
547 exe.is_linking_libcpp = true;
636 exe.linkLibC();
637 exe.linkLibCpp();
548638
549639 const run = addRunArtifact(exe);
550640 run.expectStdOutEqual("Hello World!\n");
......@@ -606,7 +696,7 @@ fn testTlsStatic(b: *Build, opts: Options) *Step {
606696 \\ return 0;
607697 \\}
608698 , &.{});
609 exe.is_linking_libc = true;
699 exe.linkLibC();
610700
611701 const run = addRunArtifact(exe);
612702 run.expectStdOutEqual(