Update.
2002-05-17 David S. Miller <davem@redhat.com> * sysdeps/unix/sysv/linux/sparc/fork.S: Define _internal aliases. 2002-05-16 David S. Miller <davem@redhat.com> * sysdeps/sparc/sparc32/dl-machine.h (LOAD_PIC_REG): Define. (elf_machine_dynamic): Use it to force PIC register to be loaded. (elf_machine_load_address): Likewise. * sysdeps/sparc/sparc64/dl-machine.h: Mirror sparc32 changes. * sysdeps/sparc/sparc64/strncmp.S: When second argument pointer is unaligned, do not forget to fully initialize %g1 magic value. * sysdeps/unix/sysv/linux/sparc/sys/procfs.h: Fix 64-bit elf register definitions and provide 32-bit variants of structures during 64-bit builds. * soft-fp/op-1.h (_FP_FRAC_CLEAR_OVERP_1): Define. * soft-fp/op-2.h (_FP_FRAC_CLEAR_OVERP_2): Define. * soft-fp/op-4.h (_FP_FRAC_CLEAR_OVERP_4): Define. * soft-fp/op-common.h (_FP_PACK_CANONICAL): After rounding, if _FP_FRAC_OVERP_X is set, use _FP_FRAC_CLEAR_OVERP_X to clear it. (_FP_FROM_INT): Perform right shifts on unsigned integer type. Do not clear implicit one bit here, it must be done post-rounding. Only pad to the left using left shift if value uses less than the available fractional bits.
This commit is contained in:
Ulrich Drepper
parent
509bd8e35a
commit
cf29934141
28
ChangeLog
28
ChangeLog
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@ -1,3 +1,31 @@
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2002-05-17 David S. Miller <davem@redhat.com>
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* sysdeps/unix/sysv/linux/sparc/fork.S: Define _internal aliases.
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2002-05-16 David S. Miller <davem@redhat.com>
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* sysdeps/sparc/sparc32/dl-machine.h (LOAD_PIC_REG): Define.
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(elf_machine_dynamic): Use it to force PIC register to be loaded.
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(elf_machine_load_address): Likewise.
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* sysdeps/sparc/sparc64/dl-machine.h: Mirror sparc32 changes.
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* sysdeps/sparc/sparc64/strncmp.S: When second argument pointer
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is unaligned, do not forget to fully initialize %g1 magic value.
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* sysdeps/unix/sysv/linux/sparc/sys/procfs.h: Fix 64-bit elf
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register definitions and provide 32-bit variants of structures
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during 64-bit builds.
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* soft-fp/op-1.h (_FP_FRAC_CLEAR_OVERP_1): Define.
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* soft-fp/op-2.h (_FP_FRAC_CLEAR_OVERP_2): Define.
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* soft-fp/op-4.h (_FP_FRAC_CLEAR_OVERP_4): Define.
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* soft-fp/op-common.h (_FP_PACK_CANONICAL): After rounding, if
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_FP_FRAC_OVERP_X is set, use _FP_FRAC_CLEAR_OVERP_X to clear it.
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(_FP_FROM_INT): Perform right shifts on unsigned integer type.
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Do not clear implicit one bit here, it must be done post-rounding.
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Only pad to the left using left shift if value uses less than the
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available fractional bits.
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2002-05-20 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
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* sysdeps/powerpc/Makefile (sysdeps_routines): Use libgcc-compat
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@ -55,6 +55,7 @@
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#define _FP_FRAC_NEGP_1(X) ((_FP_WS_TYPE)X##_f < 0)
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#define _FP_FRAC_ZEROP_1(X) (X##_f == 0)
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#define _FP_FRAC_OVERP_1(fs,X) (X##_f & _FP_OVERFLOW_##fs)
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#define _FP_FRAC_CLEAR_OVERP_1(fs,X) (X##_f &= ~_FP_OVERFLOW_##fs)
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#define _FP_FRAC_EQ_1(X, Y) (X##_f == Y##_f)
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#define _FP_FRAC_GE_1(X, Y) (X##_f >= Y##_f)
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#define _FP_FRAC_GT_1(X, Y) (X##_f > Y##_f)
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@ -112,6 +112,7 @@
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#define _FP_FRAC_NEGP_2(X) ((_FP_WS_TYPE)X##_f1 < 0)
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#define _FP_FRAC_ZEROP_2(X) ((X##_f1 | X##_f0) == 0)
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#define _FP_FRAC_OVERP_2(fs,X) (_FP_FRAC_HIGH_##fs(X) & _FP_OVERFLOW_##fs)
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#define _FP_FRAC_CLEAR_OVERP_2(fs,X) (_FP_FRAC_HIGH_##fs(X) &= ~_FP_OVERFLOW_##fs)
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#define _FP_FRAC_EQ_2(X, Y) (X##_f1 == Y##_f1 && X##_f0 == Y##_f0)
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#define _FP_FRAC_GT_2(X, Y) \
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(X##_f1 > Y##_f1 || X##_f1 == Y##_f1 && X##_f0 > Y##_f0)
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@ -129,6 +129,7 @@
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#define _FP_FRAC_ZEROP_4(X) ((X##_f[0] | X##_f[1] | X##_f[2] | X##_f[3]) == 0)
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#define _FP_FRAC_NEGP_4(X) ((_FP_WS_TYPE)X##_f[3] < 0)
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#define _FP_FRAC_OVERP_4(fs,X) (_FP_FRAC_HIGH_##fs(X) & _FP_OVERFLOW_##fs)
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#define _FP_FRAC_CLEAR_OVERP_4(fs,X) (_FP_FRAC_HIGH_##fs(X) &= ~_FP_OVERFLOW_##fs)
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#define _FP_FRAC_EQ_4(X,Y) \
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(X##_f[0] == Y##_f[0] && X##_f[1] == Y##_f[1] \
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@ -89,11 +89,10 @@ do { \
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_FP_ROUND(wc, X); \
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if (_FP_FRAC_OVERP_##wc(fs, X)) \
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{ \
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_FP_FRAC_SRL_##wc(X, (_FP_WORKBITS+1)); \
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_FP_FRAC_CLEAR_OVERP_##wc(fs, X); \
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X##_e++; \
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} \
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else \
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_FP_FRAC_SRL_##wc(X, _FP_WORKBITS); \
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_FP_FRAC_SRL_##wc(X, _FP_WORKBITS); \
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if (X##_e >= _FP_EXPMAX_##fs) \
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{ \
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/* overflow */ \
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@ -682,25 +681,27 @@ do { \
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do { \
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if (r) \
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{ \
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unsigned rtype ur_; \
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X##_c = FP_CLS_NORMAL; \
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\
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if ((X##_s = (r < 0))) \
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r = -r; \
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\
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ur_ = (unsigned rtype) r; \
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if (rsize <= _FP_W_TYPE_SIZE) \
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__FP_CLZ(X##_e, r); \
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__FP_CLZ(X##_e, ur_); \
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else \
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__FP_CLZ_2(X##_e, (_FP_W_TYPE)(r >> _FP_W_TYPE_SIZE), \
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(_FP_W_TYPE)r); \
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__FP_CLZ_2(X##_e, (_FP_W_TYPE)(ur_ >> _FP_W_TYPE_SIZE), \
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(_FP_W_TYPE)ur_); \
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if (rsize < _FP_W_TYPE_SIZE) \
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X##_e -= (_FP_W_TYPE_SIZE - rsize); \
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X##_e = rsize - X##_e - 1; \
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\
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if (_FP_FRACBITS_##fs < rsize && _FP_WFRACBITS_##fs < X##_e) \
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__FP_FRAC_SRS_1(r, (X##_e - _FP_WFRACBITS_##fs), rsize); \
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r &= ~((rtype)1 << X##_e); \
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_FP_FRAC_DISASSEMBLE_##wc(X, ((unsigned rtype)r), rsize); \
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_FP_FRAC_SLL_##wc(X, (_FP_WFRACBITS_##fs - X##_e - 1)); \
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__FP_FRAC_SRS_1(ur_, (X##_e - _FP_WFRACBITS_##fs + 1), rsize);\
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_FP_FRAC_DISASSEMBLE_##wc(X, ur_, rsize); \
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if ((_FP_WFRACBITS_##fs - X##_e - 1) > 0) \
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_FP_FRAC_SLL_##wc(X, (_FP_WFRACBITS_##fs - X##_e - 1)); \
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} \
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else \
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{ \
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@ -72,6 +72,17 @@ elf_machine_matches_host (const Elf32_Ehdr *ehdr)
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return 0;
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}
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/* We have to do this because elf_machine_{dynamic,load_address} can be
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invoked from functions that have no GOT references, and thus the compiler
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has no obligation to load the PIC register. */
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#define LOAD_PIC_REG(PIC_REG) \
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do { register Elf32_Addr pc __asm("o7"); \
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__asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
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"call 1f\n\t" \
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"add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n" \
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"1:\tadd %1, %0, %1" \
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: "=r" (pc), "=r" (PIC_REG)); \
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} while (0)
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/* Return the link-time address of _DYNAMIC. Conveniently, this is the
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first element of the GOT. This must be inlined in a function which
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@ -80,6 +91,9 @@ static inline Elf32_Addr
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elf_machine_dynamic (void)
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{
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register Elf32_Addr *got asm ("%l7");
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LOAD_PIC_REG (got);
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return *got;
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}
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@ -89,6 +103,8 @@ elf_machine_load_address (void)
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{
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register Elf32_Addr pc __asm("%o7"), pic __asm("%l7"), got;
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LOAD_PIC_REG (pic);
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/* Utilize the fact that a local .got entry will be partially
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initialized at startup awaiting its RELATIVE fixup. */
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@ -39,6 +39,18 @@ elf_machine_matches_host (const Elf64_Ehdr *ehdr)
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return ehdr->e_machine == EM_SPARCV9;
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}
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/* We have to do this because elf_machine_{dynamic,load_address} can be
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invoked from functions that have no GOT references, and thus the compiler
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has no obligation to load the PIC register. */
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#define LOAD_PIC_REG(PIC_REG) \
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do { Elf64_Addr tmp; \
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__asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
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"rd %%pc, %0\n\t" \
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"add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t" \
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"add %0, %1, %0" \
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: "=r" (PIC_REG), "=r" (tmp)); \
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} while (0)
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/* Return the link-time address of _DYNAMIC. Conveniently, this is the
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first element of the GOT. This must be inlined in a function which
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uses global data. */
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@ -47,6 +59,8 @@ elf_machine_dynamic (void)
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{
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register Elf64_Addr *elf_pic_register __asm__("%l7");
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LOAD_PIC_REG (elf_pic_register);
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return *elf_pic_register;
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}
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@ -56,6 +70,8 @@ elf_machine_load_address (void)
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{
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register Elf64_Addr *elf_pic_register __asm__("%l7");
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LOAD_PIC_REG (elf_pic_register);
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/* We used to utilize the fact that a local .got entry will
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be partially initialized at startup awaiting its RELATIVE
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fixup:
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@ -290,14 +290,15 @@ ENTRY(strncmp)
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ldxa [%o0] ASI_PNF, %g4 /* Load */
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11: sllx %g3, 3, %g5 /* IEU0 Group */
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mov 64, %g7 /* IEU1 */
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sub %o1, %g3, %o1 /* IEU0 Group */
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or %g1, %g2, %g1 /* IEU0 Group */
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sub %o1, %g3, %o1 /* IEU1 */
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sub %g7, %g5, %g7 /* IEU1 */
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sub %g7, %g5, %g7 /* IEU0 Group */
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ldxa [%o1] ASI_PNF, %o4 /* Load */
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sllx %g1, 7, %g2 /* IEU0 Group */
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add %o1, 8, %o1 /* IEU1 */
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sllx %g1, 7, %g2 /* IEU1 */
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add %o1, 8, %o1 /* IEU0 Group */
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/* %g1 = 0101010101010101
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%g2 = 8080808080800880
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%g2 = 8080808080808080
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%g3 = %o1 alignment
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%g5 = number of bits to shift left
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%g7 = number of bits to shift right */
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@ -25,5 +25,6 @@ PSEUDO (__libc_fork, fork, 0)
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and %o0, %o1, %o0
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PSEUDO_END (__libc_fork)
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strong_alias (__libc_fork, __fork_internal)
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weak_alias (__libc_fork, __fork)
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weak_alias (__libc_fork, fork)
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@ -35,7 +35,7 @@ __BEGIN_DECLS
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#if __WORDSIZE == 64
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#define ELF_NGREG 20
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#define ELF_NGREG 36
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typedef struct
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{
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@ -139,6 +139,73 @@ typedef __pid_t lwpid_t;
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typedef struct elf_prstatus prstatus_t;
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typedef struct elf_prpsinfo prpsinfo_t;
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#if __WORDSIZE == 64
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/* Provide 32-bit variants so that BFD can read 32-bit
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core files. */
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#define ELF_NGREG32 38
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typedef struct
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{
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union
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{
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unsigned int pr_regs[32];
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double pr_dregs[16];
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} pr_fr;
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unsigned int __unused;
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unsigned int pr_fsr;
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unsigned char pr_qcnt;
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unsigned char pr_q_entrysize;
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unsigned char pr_en;
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unsigned int pr_q[64];
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} elf_fpregset_t32;
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typedef unsigned int elf_greg_t32;
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typedef elf_greg_t32 elf_gregset_t32[ELF_NGREG32];
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struct elf_prstatus32
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{
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struct elf_siginfo pr_info; /* Info associated with signal. */
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short int pr_cursig; /* Current signal. */
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unsigned int pr_sigpend; /* Set of pending signals. */
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unsigned int pr_sighold; /* Set of held signals. */
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__pid_t pr_pid;
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__pid_t pr_ppid;
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__pid_t pr_pgrp;
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__pid_t pr_sid;
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struct
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{
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int tv_sec, tv_usec;
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} pr_utime, /* User time. */
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pr_stime, /* System time. */
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pr_cutime, /* Cumulative user time. */
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pr_cstime; /* Cumulative system time. */
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elf_gregset_t32 pr_reg; /* GP registers. */
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int pr_fpvalid; /* True if math copro being used. */
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};
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struct elf_prpsinfo32
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{
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char pr_state; /* Numeric process state. */
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char pr_sname; /* Char for pr_state. */
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char pr_zomb; /* Zombie. */
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char pr_nice; /* Nice val. */
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unsigned int pr_flag; /* Flags. */
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unsigned short int pr_uid;
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unsigned short int pr_gid;
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int pr_pid, pr_ppid, pr_pgrp, pr_sid;
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/* Lots missing */
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char pr_fname[16]; /* Filename of executable. */
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char pr_psargs[ELF_PRARGSZ]; /* Initial part of arg list. */
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};
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typedef elf_gregset_t32 prgregset32_t;
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typedef elf_fpregset_t32 prfpregset32_t;
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typedef struct elf_prstatus32 prstatus32_t;
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typedef struct elf_prpsinfo32 prpsinfo32_t;
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#endif /* sparc64 */
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__END_DECLS
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#endif /* sys/procfs.h */
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