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| author | Iain Sandoe <iain@sandoe.co.uk> | 2019-10-09 18:43:36 +0000 |
|---|---|---|
| committer | Iain Sandoe <iains@gcc.gnu.org> | 2019-10-09 18:43:36 +0000 |
| commit | a0e887be6147edcd14a5b95af17456d0a01575d4 (patch) | |
| tree | 614da0f4385ce7194462750a99f97fb117b32032 /gcc | |
| parent | e295e3d981355c61b72eca2ee58864958655cc31 (diff) | |
| download | gcc-a0e887be6147edcd14a5b95af17456d0a01575d4.zip gcc-a0e887be6147edcd14a5b95af17456d0a01575d4.tar.gz gcc-a0e887be6147edcd14a5b95af17456d0a01575d4.tar.bz2 | |
[Darwin, machopic 3/n] Set a SYMBOL flag for indirections.
We are able to treat these specially where needed in legitimate address
tests (specifically, they are guaranteed to be pointer-aligned).
gcc/ChangeLog:
2019-10-09 Iain Sandoe <iain@sandoe.co.uk>
* config/darwin.c (machopic_indirect_data_reference): Set flag to
indicate that the new symbol is an indirection.
(machopic_indirect_call_target): Likewise.
* config/darwin.h (MACHO_SYMBOL_FLAG_INDIRECTION): New.
(MACHO_SYMBOL_INDIRECTION_P): New.
(MACHO_SYMBOL_FLAG_STATIC): Adjust bit number.
From-SVN: r276767
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/config/darwin.c | 2 | ||||
| -rw-r--r-- | gcc/config/darwin.h | 9 |
3 files changed, 19 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a02d211..e66d065 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +2019-10-09 Iain Sandoe <iain@sandoe.co.uk> + + * config/darwin.c (machopic_indirect_data_reference): Set flag to + indicate that the new symbol is an indirection. + (machopic_indirect_call_target): Likewise. + * config/darwin.h (MACHO_SYMBOL_FLAG_INDIRECTION): New. + (MACHO_SYMBOL_INDIRECTION_P): New. + (MACHO_SYMBOL_FLAG_STATIC): Adjust bit number. + 2019-10-08 Jason Merrill <jason@redhat.com> * doc/invoke.texi: Document -fconcepts-ts. diff --git a/gcc/config/darwin.c b/gcc/config/darwin.c index 679e0c2..35d0444 100644 --- a/gcc/config/darwin.c +++ b/gcc/config/darwin.c @@ -707,6 +707,7 @@ machopic_indirect_data_reference (rtx orig, rtx reg) machopic_indirection_name (orig, /*stub_p=*/false))); SYMBOL_REF_DATA (ptr_ref) = SYMBOL_REF_DATA (orig); + SYMBOL_REF_FLAGS (ptr_ref) |= MACHO_SYMBOL_FLAG_INDIRECTION; ptr_ref = gen_const_mem (Pmode, ptr_ref); machopic_define_symbol (ptr_ref); @@ -806,6 +807,7 @@ machopic_indirect_call_target (rtx target) XEXP (target, 0) = gen_rtx_SYMBOL_REF (mode, stub_name); SYMBOL_REF_DATA (XEXP (target, 0)) = SYMBOL_REF_DATA (sym_ref); + SYMBOL_REF_FLAGS (XEXP (target, 0)) |= MACHO_SYMBOL_FLAG_INDIRECTION; MEM_READONLY_P (target) = 1; MEM_NOTRAP_P (target) = 1; } diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h index 7fab869..f331fa1 100644 --- a/gcc/config/darwin.h +++ b/gcc/config/darwin.h @@ -843,12 +843,19 @@ extern GTY(()) section * darwin_sections[NUM_DARWIN_SECTIONS]; #define MACHO_SYMBOL_HIDDEN_VIS_P(RTX) \ ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_HIDDEN_VIS) != 0) +/* Set on a symbol that is a pic stub or symbol indirection (i.e. the + L_xxxxx${stub,non_lazy_ptr,lazy_ptr}. */ + +#define MACHO_SYMBOL_FLAG_INDIRECTION ((SYMBOL_FLAG_SUBT_DEP) << 5) +#define MACHO_SYMBOL_INDIRECTION_P(RTX) \ + ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_INDIRECTION) != 0) + /* Set on a symbol to indicate when fix-and-continue style code generation is being used and the symbol refers to a static symbol that should be rebound from new instances of a translation unit to the original instance of the data. */ -#define MACHO_SYMBOL_FLAG_STATIC ((SYMBOL_FLAG_SUBT_DEP) << 5) +#define MACHO_SYMBOL_FLAG_STATIC ((SYMBOL_FLAG_SUBT_DEP) << 6) #define MACHO_SYMBOL_STATIC_P(RTX) \ ((SYMBOL_REF_FLAGS (RTX) & MACHO_SYMBOL_FLAG_STATIC) != 0) |