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73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
#include <sysdep.h> /* For ARCH_HAS_T2. */
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#ifdef __thumb2__
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# define ARM_PC_OFFSET "4"
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#else
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# define ARM_PC_OFFSET "8"
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#endif
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/* Returns the address of data containing ".word SYMBOL(RELOC)". */
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#if defined (ARCH_HAS_T2) && !defined (PIC)
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# define GET_SPECIAL_RELOC(symbol, reloc) \
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({ \
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int *__##symbol##_rodata; \
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asm ("movw %0, #:lower16:1f\n" \
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"movt %0, #:upper16:1f\n" \
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".pushsection .rodata.cst4, \"aM\", %%progbits, 4\n" \
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".balign 4\n" \
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"1: .word " #symbol "(" #reloc ")\n" \
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".popsection" \
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: "=r" (__##symbol##_rodata)); \
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__##symbol##_rodata; \
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})
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#elif defined (ARCH_HAS_T2) && defined (PIC) && ARM_PCREL_MOVW_OK
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# define GET_SPECIAL_RELOC(symbol, reloc) \
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({ \
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int *__##symbol##_rodata; \
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asm ("movw %0, #:lower16:1f - 2f - " ARM_PC_OFFSET "\n" \
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"movt %0, #:upper16:1f - 2f - " ARM_PC_OFFSET "\n" \
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".pushsection .rodata.cst4, \"aM\", %%progbits, 4\n" \
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".balign 4\n" \
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"1: .word " #symbol "(" #reloc ")\n" \
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".popsection\n" \
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"2: add %0, %0, pc" \
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: "=r" (__##symbol##_rodata)); \
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__##symbol##_rodata; \
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})
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#else
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# define GET_SPECIAL_RELOC(symbol, reloc) \
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({ \
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int *__##symbol##_rodata; \
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asm ("adr %0, 1f\n" \
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"b 2f\n" \
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".balign 4\n" \
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"1: .word " #symbol "(" #reloc ")\n" \
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"2:" \
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: "=r" (__##symbol##_rodata)); \
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__##symbol##_rodata; \
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})
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#endif
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/* Returns the pointer value (SYMBOL(RELOC) + pc - PC_OFS). */
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#define GET_SPECIAL_PCREL(symbol, reloc) \
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({ \
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int *__##symbol##_rodata = GET_SPECIAL_RELOC (symbol, reloc); \
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(void *) ((int) __##symbol##_rodata + *__##symbol##_rodata); \
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})
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#define TLS_LE(x) \
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(__builtin_thread_pointer () + *GET_SPECIAL_RELOC (x, tpoff))
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#define TLS_IE(x) \
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((int *) (__builtin_thread_pointer () \
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+ *(int *) GET_SPECIAL_PCREL (x, gottpoff)))
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extern void *__tls_get_addr (void *);
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#define TLS_LD(x) \
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((int *) (__tls_get_addr (GET_SPECIAL_PCREL (x, tlsldm)) \
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+ *GET_SPECIAL_RELOC (x, tlsldo)))
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#define TLS_GD(x) \
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((int *) __tls_get_addr (GET_SPECIAL_PCREL (x, tlsgd)))
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