mirror of
git://git.musl-libc.org/musl
synced 2024-12-18 04:34:50 +00:00
eaf7ab6e24
previously, the normal ELF library loading code was used even for fdpic, so only the kernel-loaded dynamic linker and main app could benefit from separate placement of segments and shared text.
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
#include <endian.h>
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#if __BYTE_ORDER == __BIG_ENDIAN
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#define ENDIAN_SUFFIX "eb"
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#else
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#define ENDIAN_SUFFIX ""
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#endif
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#if __SH_FPU_ANY__ || __SH4__
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#define FP_SUFFIX ""
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#else
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#define FP_SUFFIX "-nofpu"
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#endif
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#if __SH_FDPIC__
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#define ABI_SUFFIX "-fdpic"
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#else
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#define ABI_SUFFIX ""
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#endif
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#define LDSO_ARCH "sh" ENDIAN_SUFFIX FP_SUFFIX ABI_SUFFIX
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#define TPOFF_K 8
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#define REL_SYMBOLIC R_SH_DIR32
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#define REL_OFFSET R_SH_REL32
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#define REL_GOT R_SH_GLOB_DAT
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#define REL_PLT R_SH_JMP_SLOT
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#define REL_RELATIVE R_SH_RELATIVE
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#define REL_COPY R_SH_COPY
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#define REL_DTPMOD R_SH_TLS_DTPMOD32
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#define REL_DTPOFF R_SH_TLS_DTPOFF32
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#define REL_TPOFF R_SH_TLS_TPOFF32
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#if __SH_FDPIC__
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#define REL_FUNCDESC R_SH_FUNCDESC
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#define REL_FUNCDESC_VAL R_SH_FUNCDESC_VALUE
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#undef REL_RELATIVE
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#define DL_FDPIC 1
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#define FDPIC_CONSTDISP_FLAG 0x100
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#define CRTJMP(pc,sp) do { \
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register size_t r8 __asm__("r8") = ((size_t *)(sp))[-2]; \
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__asm__ __volatile__( "jmp @%0 ; mov %1,r15" \
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: : "r"(pc), "r"(sp), "r"(r8) : "memory" ); } while(0)
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#define GETFUNCSYM(fp, sym, got) __asm__ ( \
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"mov.l 1f,%0 ; add %1,%0 ; bra 2f ; nop ; .align 2 \n" \
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"1: .long " #sym "@GOTOFFFUNCDESC \n2:" \
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: "=&r"(*fp) : "r"(got) : "memory" )
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#else
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#define CRTJMP(pc,sp) __asm__ __volatile__( \
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"jmp @%0 ; mov %1,r15" : : "r"(pc), "r"(sp) : "memory" )
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#endif
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