efi: restrict visibility of EFIABI_ATTR-declared functions
In-tree gcc (4.2) doesn't understand __attribute__((ms_abi)) (EFIABI_ATTR). Avoid declaring functions with that attribute when the compiler is detected to be gcc < 4.4. Reviewed by: kib, imp (previous version) Approved by: markj (mentor) Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D11636
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@ -36,8 +36,14 @@
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* XXX: from gcc 6.2 manual:
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* Note, the ms_abi attribute for Microsoft Windows 64-bit targets
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* currently requires the -maccumulate-outgoing-args option.
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*
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* Avoid EFIABI_ATTR declarations for compilers that don't support it.
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* GCC support began in version 4.4.
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*/
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#if defined(__clang__) || defined(__GNUC__) && \
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(__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 4)
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#define EFIABI_ATTR __attribute__((ms_abi))
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#endif
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#ifdef _KERNEL
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struct uuid;
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@ -122,6 +122,9 @@ struct efi_tblhdr {
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uint32_t __res;
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};
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#ifdef _KERNEL
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#ifdef EFIABI_ATTR
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struct efi_rt {
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struct efi_tblhdr rt_hdr;
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efi_status (*rt_gettime)(struct efi_tm *, struct efi_tmcap *)
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@ -144,6 +147,7 @@ struct efi_rt {
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efi_status (*rt_reset)(enum efi_reset, efi_status, u_long,
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efi_char *) EFIABI_ATTR;
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};
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#endif
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struct efi_systbl {
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struct efi_tblhdr st_hdr;
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@ -163,7 +167,6 @@ struct efi_systbl {
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uint64_t st_cfgtbl;
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};
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#ifdef _KERNEL
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extern vm_paddr_t efi_systbl_phys;
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#endif /* _KERNEL */
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