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3a33b06969
The creation of the divergent sysdeps directory for powerpc64le
commit 2f7f3cd8cd
Author: Paul E. Murphy <murphyp@linux.vnet.ibm.com>
Date: Fri Jul 15 18:04:40 2016 -0500
powerpc64le: Create divergent sysdep directory for powerpc64le.
allowed float128 to be enabled for powerpc64le (little-endian) and not
for powerpc64 (big-endian). Since the only intended difference between
them was the presence or absence of the float128 interface, the sysdeps
directory for powerpc64le explicitly reused the files from powerpc64
(through the use of Implies files).
Although this works, it also means that files under the powerpc64
directory might be preferred over files under powerpc64le. For
instance, on a build for powerpc64le with target set to power9, a file
from powerpc64/power5 might get built, even though a file with the same
name exists in powerpc64le/power8. That happens because the processor
hierarchy was only defined in the sysdeps directory for powerpc64 (and
borrowed by powerpc64le).
This patch fixes this behavior, by creating new subdirectories under
powerpc64 (i.e.: powerpc64/be and powerpc64/le) and creating new Implies
files to provide the hierarchy of processors for powerpc64 and
powerpc64le separately. These changes have no effect on installed,
stripped binaries (which remain unchanged).
Tested that installed stripped binaries are unchanged and that there are
no regressions on powerpc64 and powerpc64le.
116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
#define _FP_W_TYPE_SIZE 64
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#define _FP_W_TYPE unsigned long long
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#define _FP_WS_TYPE signed long long
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#define _FP_I_TYPE long long
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typedef int TItype __attribute__ ((mode (TI)));
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typedef unsigned int UTItype __attribute__ ((mode (TI)));
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#define TI_BITS (__CHAR_BIT__ * (int)sizeof(TItype))
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/* The type of the result of a floating point comparison. This must
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match `__libgcc_cmp_return__' in GCC for the target. */
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typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
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#define CMPtype __gcc_CMPtype
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#define _FP_MUL_MEAT_S(R,X,Y) \
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_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
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#define _FP_MUL_MEAT_D(R,X,Y) \
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_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
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#define _FP_MUL_MEAT_Q(R,X,Y) \
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_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
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#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_loop(S,R,X,Y)
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#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv(D,R,X,Y)
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#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
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#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
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#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1)
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#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1
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#define _FP_NANSIGN_S 0
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#define _FP_NANSIGN_D 0
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#define _FP_NANSIGN_Q 0
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#define _FP_KEEPNANFRACP 1
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#define _FP_QNANNEGATEDP 0
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/* Someone please check this. */
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#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
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do { \
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if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \
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&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \
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{ \
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R##_s = Y##_s; \
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_FP_FRAC_COPY_##wc(R,Y); \
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} \
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else \
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{ \
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R##_s = X##_s; \
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_FP_FRAC_COPY_##wc(R,X); \
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} \
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R##_c = FP_CLS_NAN; \
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} while (0)
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#define _FP_TININESS_AFTER_ROUNDING 0
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#define __LITTLE_ENDIAN 1234
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#define __BIG_ENDIAN 4321
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#define __BYTE_ORDER __LITTLE_ENDIAN
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/* Only provide exception support if we have hardware floating point using
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floating point registers and we can execute the mtfsf instruction. This
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would only be true if we are using the emulation routines for IEEE 128-bit
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floating point on pre-ISA 3.0 machines without the IEEE 128-bit floating
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point support. */
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#ifdef __FLOAT128__
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#define ISA_BIT(x) (1LL << (63 - x))
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/* Use the same bits of the FPSCR. */
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# define FP_EX_INVALID ISA_BIT(34)
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# define FP_EX_OVERFLOW ISA_BIT(35)
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# define FP_EX_UNDERFLOW ISA_BIT(36)
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# define FP_EX_DIVZERO ISA_BIT(37)
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# define FP_EX_INEXACT ISA_BIT(38)
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# define FP_EX_ALL (FP_EX_INVALID | FP_EX_OVERFLOW \
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| FP_EX_UNDERFLOW | FP_EX_DIVZERO \
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| FP_EX_INEXACT)
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void __sfp_handle_exceptions (int);
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# define FP_HANDLE_EXCEPTIONS \
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do { \
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if (__builtin_expect (_fex, 0)) \
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__sfp_handle_exceptions (_fex); \
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} while (0);
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/* The FP_EX_* bits track whether the exception has occurred. This macro
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must set the FP_EX_* bits of those exceptions which are configured to
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trap. The FPSCR bit which indicates this is 22 ISA bits above the
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respective FP_EX_* bit. Note, the ISA labels bits from msb to lsb,
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so 22 ISA bits above is 22 bits below when counted from the lsb. */
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# define FP_TRAPPING_EXCEPTIONS ((_fpscr.i << 22) & FP_EX_ALL)
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# define FP_RND_NEAREST 0x0
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# define FP_RND_ZERO 0x1
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# define FP_RND_PINF 0x2
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# define FP_RND_MINF 0x3
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# define FP_RND_MASK 0x3
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# define _FP_DECL_EX \
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union { unsigned long long i; double d; } _fpscr __attribute__ ((unused)) = \
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{ .i = FP_RND_NEAREST }
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#define FP_INIT_ROUNDMODE \
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do { \
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__asm__ __volatile__ ("mffs %0" \
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: "=f" (_fpscr.d)); \
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} while (0)
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# define FP_ROUNDMODE (_fpscr.i & FP_RND_MASK)
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#endif /* !__FLOAT128__ */
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