gcc/ChangeLog
* config.gcc: Handle --enable-fdpic.
* config/sh/constraints.md (Ccl): New constraint.
* config/sh/linux.h (SUBTARGET_LINK_EMUL_SUFFIX): Handle -mfdpic.
* config/sh/sh-c.c (sh_cpu_cpp_builtins): Add __FDPIC__ and
__SH_FDPIC__.
* config/sh/sh-mem.cc (expand_block_move): Support FDPIC for calls
to library functions.
* config/sh/sh-protos.h (function_symbol_result): New struct.
(function_symbol): Return function_symbol_result.
(sh_get_fdpic_reg_initial_val, sh_load_function_descriptor): New
declarations.
* config/sh/sh.c (TARGET_ASM_INTEGER, sh_assemble_integer):
Implement target hook.
(TARGET_CANNOT_FORCE_CONST_MEM, sh_cannot_force_const_mem_p):
Likewise.
(sh_option_override): Force -fPIC if FDPIC is in effect.
(sh_asm_output_addr_const_extra): Add UNSPEC_GOTFUNCDESC and
UNSPEC_GOTOFFFUNCDESC cases.
(prepare_move_operands): Use FDPIC initial GOT register for
TLS-related GOT access; inhibit cross-section address offset
constants for FDPIC.
(sh_assemble_integer): New function.
(sh_cannot_copy_insn_p): Inhibit copying insns that are FDPIC
PC-relative call sites.
(expand_ashiftrt): Adapt invocation of function_symbol.
(sh_expand_prologue): Inhibit PC-relative GOT address load for
FDPIC.
(nonpic_symbol_mentioned_p): Add cases for UNSPEC_GOTFUNCDESC and
UNSPEC_GOTOFFFUNCDESC.
(legitimize_pic_address): Resolve function symbols to function
descriptors for FDPIC. Do not use GOT-relative addressing for
local data that may be read-only on FDPIC.
(sh_emit_storesi, sh_emit_storehi): New functions.
(sh_trampoline_init): Generate FDPIC trampolines.
(sh_function_ok_for_sibcall): Add TARGET_FDPIC check.
(sh_expand_sym_label2reg): Don't assume sibcalls are local.
(sh_output_mi_thunk): Generate FDPIC call.
(function_symbol): Return function_symbol_result. For
SFUNC_STATIC on FDPIC, generate call site labels to use
PC-relative addressing rather than GOT-relative addressing.
(sh_conditional_register_usage): Make PIC register fixed and call used
when FDPIC is in effect.
(sh_legitimate_constant_p): Impose FDPIC
constant constraints.
(sh_cannot_force_const_mem_p, sh_load_function_descriptor)
(sh_get_fdpic_reg_initial_val): New functions.
* config/sh/sh.h (SUBTARGET_ASM_SPEC, SUBTARGET_LINK_EMUL_SUFFIX):
Handle -mfdpic.
(FDPIC_SELF_SPECS, SUBTARGET_DRIVER_SELF_SPECS)
(PIC_OFFSET_TABLE_REG_CALL_CLOBBERED)
(SH_OFFSETS_MUST_BE_WITHIN_SECTIONS_P): New macros.
(DRIVER_SELF_SPECS): Add SUBTARGET_DRIVER_SELF_SPECS and
FDPIC_SELF_SPECS.
(TRAMPOLINE_SIZE): Select trampoline size for FDPIC.
(ASM_PREFERRED_EH_DATA_FORMAT): Add EH format constraints for
FDPIC.
(ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX): Handle FDPIC case.
* config/sh/sh.md (UNSPEC_GOTFUNCDESC, UNSPEC_GOTOFFFUNCDESC): New
constants.
(calli_fdpic, call_valuei_fdpic, sibcalli_fdpic)
(sibcalli_pcrel_fdpic, sibcall_pcrel_fdpic, sibcall_valuei_fdpic)
(sibcall_valuei_pcrel_fdpic, sibcall_value_pcrel_fdpic)
(sym2GOTFUNCDESC, symGOTFUNCDESC2reg, sym2GOTOFFFUNCDESC)
(symGOTOFFFUNCDESC2reg): New patterns.
(udivsi3_i1, udivsi3_i4, udivsi3_i4_single, udivsi3,
*divsi_inv_call_combine, divsi3_i4, divsi3_i4_single, divsi3)
(ashlsi3, ashlsi3_d_call, ashrsi3_n, lshrsi3, lshrsi3_d_call)
(calli, call_valuei, call, call_value, sibcalli, sibcalli_pcrel)
(sibcall_pcrel, sibcall, sibcall_valuei, sibcall_valuei_pcrel)
(sibcall_value_pcrel, sibcall_value, GOTaddr2picreg, symGOT_load)
(symGOTOFF2reg, block_move_real, block_lump_real)
(block_move_real_i4, block_lump_real_i4): Add support for FDPIC
calls.
(mulsi3, ic_invalidate_line, initialize_trampoline, call_pop,
call_value_pop): Adjust for new function_symbol signature.
* config/sh/sh.opt (-mfdpic): New option.
* doc/install.texi (Options specification): Document
--enable-fdpic.
* doc/invoke.texi (SH Options): Document -mfdpic.
include/ChangeLog:
* longlong.h (udiv_qrnnd): Add FDPIC compatible version for SH.
libitm/ChangeLog:
* config/sh/sjlj.S (_ITM_beginTransaction): Bypass PLT calling
GTM_begin_transaction for compatibility with FDPIC.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229438
138bc75d-0d04-0410-961f-
82ee72b054a4
* bfdlink.h (bfd_link_info): Add call_nop_as_suffix and
call_nop_byte.
+2015-10-27 Daniel Jacobowitz <dan@codesourcery.com>
+ Joseph Myers <joseph@codesourcery.com>
+ Mark Shinwell <shinwell@codesourcery.com>
+ Andrew Stubbs <ams@codesourcery.com>
+ Rich Felker <dalias@libc.org>
+
+ * longlong.h (udiv_qrnnd): Add FDPIC compatible version for SH.
+
2015-10-18 Roland McGrath <roland@gnu.org>
PR other/63758
/* This is the same algorithm as __udiv_qrnnd_c. */
#define UDIV_NEEDS_NORMALIZATION 1
+#ifdef __FDPIC__
+/* FDPIC needs a special version of the asm fragment to extract the
+ code address from the function descriptor. __udiv_qrnnd_16 is
+ assumed to be local and not to use the GOT, so loading r12 is
+ not needed. */
+#define udiv_qrnnd(q, r, n1, n0, d) \
+ do { \
+ extern UWtype __udiv_qrnnd_16 (UWtype, UWtype) \
+ __attribute__ ((visibility ("hidden"))); \
+ /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ \
+ __asm__ ( \
+ "mov%M4 %4,r5\n" \
+" swap.w %3,r4\n" \
+" swap.w r5,r6\n" \
+" mov.l @%5,r2\n" \
+" jsr @r2\n" \
+" shll16 r6\n" \
+" swap.w r4,r4\n" \
+" mov.l @%5,r2\n" \
+" jsr @r2\n" \
+" swap.w r1,%0\n" \
+" or r1,%0" \
+ : "=r" (q), "=&z" (r) \
+ : "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16) \
+ : "r1", "r2", "r4", "r5", "r6", "pr", "t"); \
+ } while (0)
+#else
#define udiv_qrnnd(q, r, n1, n0, d) \
do { \
extern UWtype __udiv_qrnnd_16 (UWtype, UWtype) \
: "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16) \
: "r1", "r2", "r4", "r5", "r6", "pr", "t"); \
} while (0)
+#endif /* __FDPIC__ */
#define UDIV_TIME 80
projects / binutils-gdb.git / commitdiff