65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/* Macros to support TLS testing in times of missing compiler support. */
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#include <sys/cdefs.h>
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#include <sys/asm.h>
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#define __STRING2(X) __STRING(X)
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#define ADDU __STRING2(PTR_ADDU)
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#define ADDIU __STRING2(PTR_ADDIU)
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#define LW __STRING2(PTR_L)
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/* Load the GOT pointer, which may not be in $28 in a non-PIC
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(abicalls pic0) function. */
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#ifndef __PIC__
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# if _MIPS_SIM != _ABI64
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# define LOAD_GP "move %[tmp], $28\n\tla $28, __gnu_local_gp\n\t"
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# else
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# define LOAD_GP "move %[tmp], $28\n\tdla $28, __gnu_local_gp\n\t"
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# endif
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# define UNLOAD_GP "\n\tmove $28, %[tmp]"
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#else
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# define LOAD_GP
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# define UNLOAD_GP
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#endif
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# define TLS_GD(x) \
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({ void *__result, *__tmp; \
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extern void *__tls_get_addr (void *); \
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asm (LOAD_GP ADDIU " %0, $28, %%tlsgd(" #x ")" \
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UNLOAD_GP \
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: "=r" (__result), [tmp] "=&r" (__tmp)); \
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(int *)__tls_get_addr (__result); })
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# define TLS_LD(x) \
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({ void *__result, *__tmp; \
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extern void *__tls_get_addr (void *); \
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asm (LOAD_GP ADDIU " %0, $28, %%tlsldm(" #x ")" \
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UNLOAD_GP \
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: "=r" (__result), [tmp] "=&r" (__tmp)); \
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__result = __tls_get_addr (__result); \
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asm ("lui $3,%%dtprel_hi(" #x ")\n\t" \
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"addiu $3,$3,%%dtprel_lo(" #x ")\n\t" \
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ADDU " %0,%0,$3" \
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: "+r" (__result) : : "$3"); \
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__result; })
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# define TLS_IE(x) \
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({ void *__result, *__tmp; \
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asm (".set push\n\t.set mips32r2\n\t" \
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"rdhwr\t%0,$29\n\t.set pop" \
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: "=v" (__result)); \
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asm (LOAD_GP LW " $3,%%gottprel(" #x ")($28)\n\t" \
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ADDU " %0,%0,$3" \
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UNLOAD_GP \
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: "+r" (__result), [tmp] "=&r" (__tmp) \
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: : "$3"); \
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__result; })
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# define TLS_LE(x) \
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({ void *__result; \
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asm (".set push\n\t.set mips32r2\n\t" \
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"rdhwr\t%0,$29\n\t.set pop" \
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: "=v" (__result)); \
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asm ("lui $3,%%tprel_hi(" #x ")\n\t" \
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"addiu $3,$3,%%tprel_lo(" #x ")\n\t" \
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ADDU " %0,%0,$3" \
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: "+r" (__result) : : "$3"); \
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__result; })
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