67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/* Macros to support TLS testing in times of missing compiler support. */
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#define COMMON_INT_DEF(x) \
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asm (".tls_common " #x ",4,4")
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/* XXX This definition will probably be machine specific, too. */
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#define VAR_INT_DEF(x) \
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asm (".section .tdata\n\t" \
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".globl " #x "\n" \
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#x ":\t.long 0\n\t" \
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".previous")
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/* XXX Each architecture must have its own asm for now. */
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#ifdef __i386__
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# define TLS_LE(x) \
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({ int *__l; \
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asm ("movl %%gs:0,%0\n\t" \
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"subl $" #x "@tpoff,%0" \
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: "=r" (__l)); \
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__l; })
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#define TLS_IE(x) \
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({ int *__l, __b; \
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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,%0\n\t" \
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"subl " #x "@gottpoff(%%ebx),%0" \
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: "=r" (__l), "=&b" (__b)); \
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__l; })
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#define TLS_LD(x) \
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({ int *__l, __b; \
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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 " #x "@tlsldm(%%ebx),%%eax\n\t" \
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"call ___tls_get_addr@plt\n\t" \
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"leal " #x "@dtpoff(%%eax), %%eax" \
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: "=a" (__l), "=&b" (__b)); \
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__l; })
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#define TLS_GD(x) \
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({ int *__l, __b; \
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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 " #x "@tlsgd(%%ebx),%%eax\n\t" \
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"call ___tls_get_addr@plt\n\t" \
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"nop" \
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: "=a" (__l), "=&b" (__b)); \
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__l; })
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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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