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b123d06e21
* elf/Makefile (tests): Add tst-tls1. * elf/tst-tls1.c: New file. * sysdeps/generic/dl-tls.c (_dl_determine_tlsoffset): Don't handle alignment of TCB for now. * elf/rtld.c (dl_main): Use p_vaddr as address of TLS initialization image for the application itself. loop to initialize TLS block.
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/* glibc test for TLS in ld.so. */
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#include <stdio.h>
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#include <tls.h>
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/* XXX Until gcc gets told how to define and use thread-local
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variables we will have to resort to use asms. */
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//asm (".tls_common foo,4,4");
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asm (".section \".tdata\", \"awT\", @progbits\n\t"
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".align 4\n\t"
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".globl foo\n"
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"foo:\t.long 0\n\t"
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".globl bar\n"
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"bar:\t.long 0\n\t"
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".previous");
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int
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main (void)
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{
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#ifdef USE_TLS
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int result = 0;
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int a, b;
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/* XXX Each architecture must have its own asm for now. */
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# ifdef __i386__
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/* Set the variable using the local exec model. */
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puts ("set bar to 1 (LE)");
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asm ("movl %gs:0,%eax\n\t"
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"subl $bar@tpoff,%eax\n\t"
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"movl $1,(%eax)");
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#if 0
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// XXX Doesn't work yet; no runtime relocations.
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fputs ("get sum of foo and bar (IE)", stdout);
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asm ("call 1f\n\t"
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".subsection 1\n"
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"1:\tmovl (%%esp), %%ebx\n\t"
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"ret\n\t"
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".previous\n\t"
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"addl $_GLOBAL_OFFSET_TABLE_, %%ebx\n\t"
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"movl %%gs:0,%%eax\n\t"
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"movl %%eax,%%edx\n\t"
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"addl foo@gottpoff(%%ebx),%%eax\n\t"
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"addl bar@gottpoff(%%ebx),%%eax\n\t"
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"movl (%%eax), %0\n\t"
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"addl (%%edx), %0"
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: "=a" (a), "=&b" (b));
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printf (" = %d\n", a);
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result |= a != 1;
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#endif
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fputs ("get sum of foo and bar (GD)", stdout);
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asm ("call 1f\n\t"
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".subsection 1\n"
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"1:\tmovl (%%esp), %%ebx\n\t"
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"ret\n\t"
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".previous\n\t"
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"addl $_GLOBAL_OFFSET_TABLE_, %%ebx\n\t"
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"leal foo@tlsgd(%%ebx),%%eax\n\t"
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"call ___tls_get_addr@plt\n\t"
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"nop\n\t"
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"movl (%%eax), %%edx\n\t"
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"leal bar@tlsgd(%%ebx),%%eax\n\t"
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"call ___tls_get_addr@plt\n\t"
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"nop\n\t"
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"addl (%%eax), %%edx\n\t"
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: "=&a" (a), "=d" (b));
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printf (" = %d\n", b);
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result |= b != 1;
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# else
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# error "No support for this architecture so far."
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# endif
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return result;
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#else
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return 0;
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#endif
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}
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