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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 2002-05-21 02:15:01 +00:00
parent 509bd8e35a
commit cf29934141
10 changed files with 149 additions and 16 deletions
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28
ChangeLog
View File

@ -1,3 +1,31 @@
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.
2002-05-20 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
* sysdeps/powerpc/Makefile (sysdeps_routines): Use libgcc-compat

1
soft-fp/op-1.h
View File

@ -55,6 +55,7 @@
#define _FP_FRAC_NEGP_1(X) ((_FP_WS_TYPE)X##_f < 0)
#define _FP_FRAC_ZEROP_1(X) (X##_f == 0)
#define _FP_FRAC_OVERP_1(fs,X) (X##_f & _FP_OVERFLOW_##fs)
#define _FP_FRAC_CLEAR_OVERP_1(fs,X) (X##_f &= ~_FP_OVERFLOW_##fs)
#define _FP_FRAC_EQ_1(X, Y) (X##_f == Y##_f)
#define _FP_FRAC_GE_1(X, Y) (X##_f >= Y##_f)
#define _FP_FRAC_GT_1(X, Y) (X##_f > Y##_f)

1
soft-fp/op-2.h
View File

@ -112,6 +112,7 @@
#define _FP_FRAC_NEGP_2(X) ((_FP_WS_TYPE)X##_f1 < 0)
#define _FP_FRAC_ZEROP_2(X) ((X##_f1 | X##_f0) == 0)
#define _FP_FRAC_OVERP_2(fs,X) (_FP_FRAC_HIGH_##fs(X) & _FP_OVERFLOW_##fs)
#define _FP_FRAC_CLEAR_OVERP_2(fs,X) (_FP_FRAC_HIGH_##fs(X) &= ~_FP_OVERFLOW_##fs)
#define _FP_FRAC_EQ_2(X, Y) (X##_f1 == Y##_f1 && X##_f0 == Y##_f0)
#define _FP_FRAC_GT_2(X, Y) \
(X##_f1 > Y##_f1 || X##_f1 == Y##_f1 && X##_f0 > Y##_f0)

1
soft-fp/op-4.h
View File

@ -129,6 +129,7 @@
#define _FP_FRAC_ZEROP_4(X) ((X##_f[0] | X##_f[1] | X##_f[2] | X##_f[3]) == 0)
#define _FP_FRAC_NEGP_4(X) ((_FP_WS_TYPE)X##_f[3] < 0)
#define _FP_FRAC_OVERP_4(fs,X) (_FP_FRAC_HIGH_##fs(X) & _FP_OVERFLOW_##fs)
#define _FP_FRAC_CLEAR_OVERP_4(fs,X) (_FP_FRAC_HIGH_##fs(X) &= ~_FP_OVERFLOW_##fs)
#define _FP_FRAC_EQ_4(X,Y) \
(X##_f[0] == Y##_f[0] && X##_f[1] == Y##_f[1] \

21
soft-fp/op-common.h
View File

@ -89,11 +89,10 @@ do { \
_FP_ROUND(wc, X); \
if (_FP_FRAC_OVERP_##wc(fs, X)) \
{ \
_FP_FRAC_SRL_##wc(X, (_FP_WORKBITS+1)); \
_FP_FRAC_CLEAR_OVERP_##wc(fs, X); \
X##_e++; \
} \
else \
_FP_FRAC_SRL_##wc(X, _FP_WORKBITS); \
_FP_FRAC_SRL_##wc(X, _FP_WORKBITS); \
if (X##_e >= _FP_EXPMAX_##fs) \
{ \
/* overflow */ \
@ -682,25 +681,27 @@ do { \
do { \
if (r) \
{ \
unsigned rtype ur_; \
X##_c = FP_CLS_NORMAL; \
\
if ((X##_s = (r < 0))) \
r = -r; \
\
ur_ = (unsigned rtype) r; \
if (rsize <= _FP_W_TYPE_SIZE) \
__FP_CLZ(X##_e, r); \
__FP_CLZ(X##_e, ur_); \
else \
__FP_CLZ_2(X##_e, (_FP_W_TYPE)(r >> _FP_W_TYPE_SIZE), \
(_FP_W_TYPE)r); \
__FP_CLZ_2(X##_e, (_FP_W_TYPE)(ur_ >> _FP_W_TYPE_SIZE), \
(_FP_W_TYPE)ur_); \
if (rsize < _FP_W_TYPE_SIZE) \
X##_e -= (_FP_W_TYPE_SIZE - rsize); \
X##_e = rsize - X##_e - 1; \
\
if (_FP_FRACBITS_##fs < rsize && _FP_WFRACBITS_##fs < X##_e) \
__FP_FRAC_SRS_1(r, (X##_e - _FP_WFRACBITS_##fs), rsize); \
r &= ~((rtype)1 << X##_e); \
_FP_FRAC_DISASSEMBLE_##wc(X, ((unsigned rtype)r), rsize); \
_FP_FRAC_SLL_##wc(X, (_FP_WFRACBITS_##fs - X##_e - 1)); \
__FP_FRAC_SRS_1(ur_, (X##_e - _FP_WFRACBITS_##fs + 1), rsize);\
_FP_FRAC_DISASSEMBLE_##wc(X, ur_, rsize); \
if ((_FP_WFRACBITS_##fs - X##_e - 1) > 0) \
_FP_FRAC_SLL_##wc(X, (_FP_WFRACBITS_##fs - X##_e - 1)); \
} \
else \
{ \

16
sysdeps/sparc/sparc32/dl-machine.h
View File

@ -72,6 +72,17 @@ elf_machine_matches_host (const Elf32_Ehdr *ehdr)
return 0;
}
/* We have to do this because elf_machine_{dynamic,load_address} can be
invoked from functions that have no GOT references, and thus the compiler
has no obligation to load the PIC register. */
#define LOAD_PIC_REG(PIC_REG) \
do { register Elf32_Addr pc __asm("o7"); \
__asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
"call 1f\n\t" \
"add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n" \
"1:\tadd %1, %0, %1" \
: "=r" (pc), "=r" (PIC_REG)); \
} while (0)
/* Return the link-time address of _DYNAMIC. Conveniently, this is the
first element of the GOT. This must be inlined in a function which
@ -80,6 +91,9 @@ static inline Elf32_Addr
elf_machine_dynamic (void)
{
register Elf32_Addr *got asm ("%l7");
LOAD_PIC_REG (got);
return *got;
}
@ -89,6 +103,8 @@ elf_machine_load_address (void)
{
register Elf32_Addr pc __asm("%o7"), pic __asm("%l7"), got;
LOAD_PIC_REG (pic);
/* Utilize the fact that a local .got entry will be partially
initialized at startup awaiting its RELATIVE fixup. */

16
sysdeps/sparc/sparc64/dl-machine.h
View File

@ -39,6 +39,18 @@ elf_machine_matches_host (const Elf64_Ehdr *ehdr)
return ehdr->e_machine == EM_SPARCV9;
}
/* We have to do this because elf_machine_{dynamic,load_address} can be
invoked from functions that have no GOT references, and thus the compiler
has no obligation to load the PIC register. */
#define LOAD_PIC_REG(PIC_REG) \
do { Elf64_Addr tmp; \
__asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
"rd %%pc, %0\n\t" \
"add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t" \
"add %0, %1, %0" \
: "=r" (PIC_REG), "=r" (tmp)); \
} while (0)
/* Return the link-time address of _DYNAMIC. Conveniently, this is the
first element of the GOT. This must be inlined in a function which
uses global data. */
@ -47,6 +59,8 @@ elf_machine_dynamic (void)
{
register Elf64_Addr *elf_pic_register __asm__("%l7");
LOAD_PIC_REG (elf_pic_register);
return *elf_pic_register;
}
@ -56,6 +70,8 @@ elf_machine_load_address (void)
{
register Elf64_Addr *elf_pic_register __asm__("%l7");
LOAD_PIC_REG (elf_pic_register);
/* We used to utilize the fact that a local .got entry will
be partially initialized at startup awaiting its RELATIVE
fixup:

11
sysdeps/sparc/sparc64/strncmp.S
View File

@ -290,14 +290,15 @@ ENTRY(strncmp)
ldxa [%o0] ASI_PNF, %g4 /* Load */
11: sllx %g3, 3, %g5 /* IEU0 Group */
mov 64, %g7 /* IEU1 */
sub %o1, %g3, %o1 /* IEU0 Group */
or %g1, %g2, %g1 /* IEU0 Group */
sub %o1, %g3, %o1 /* IEU1 */
sub %g7, %g5, %g7 /* IEU1 */
sub %g7, %g5, %g7 /* IEU0 Group */
ldxa [%o1] ASI_PNF, %o4 /* Load */
sllx %g1, 7, %g2 /* IEU0 Group */
add %o1, 8, %o1 /* IEU1 */
sllx %g1, 7, %g2 /* IEU1 */
add %o1, 8, %o1 /* IEU0 Group */
/* %g1 = 0101010101010101
%g2 = 8080808080800880
%g2 = 8080808080808080
%g3 = %o1 alignment
%g5 = number of bits to shift left
%g7 = number of bits to shift right */

1
sysdeps/unix/sysv/linux/sparc/fork.S
View File

@ -25,5 +25,6 @@ PSEUDO (__libc_fork, fork, 0)
and %o0, %o1, %o0
PSEUDO_END (__libc_fork)
strong_alias (__libc_fork, __fork_internal)
weak_alias (__libc_fork, __fork)
weak_alias (__libc_fork, fork)

69
sysdeps/unix/sysv/linux/sparc/sys/procfs.h
View File

@ -35,7 +35,7 @@ __BEGIN_DECLS
#if __WORDSIZE == 64
#define ELF_NGREG 20
#define ELF_NGREG 36
typedef struct
{
@ -139,6 +139,73 @@ typedef __pid_t lwpid_t;
typedef struct elf_prstatus prstatus_t;
typedef struct elf_prpsinfo prpsinfo_t;
#if __WORDSIZE == 64
/* Provide 32-bit variants so that BFD can read 32-bit
core files. */
#define ELF_NGREG32 38
typedef struct
{
union
{
unsigned int pr_regs[32];
double pr_dregs[16];
} pr_fr;
unsigned int __unused;
unsigned int pr_fsr;
unsigned char pr_qcnt;
unsigned char pr_q_entrysize;
unsigned char pr_en;
unsigned int pr_q[64];
} elf_fpregset_t32;
typedef unsigned int elf_greg_t32;
typedef elf_greg_t32 elf_gregset_t32[ELF_NGREG32];
struct elf_prstatus32
{
struct elf_siginfo pr_info; /* Info associated with signal. */
short int pr_cursig; /* Current signal. */
unsigned int pr_sigpend; /* Set of pending signals. */
unsigned int pr_sighold; /* Set of held signals. */
__pid_t pr_pid;
__pid_t pr_ppid;
__pid_t pr_pgrp;
__pid_t pr_sid;
struct
{
int tv_sec, tv_usec;
} pr_utime, /* User time. */
pr_stime, /* System time. */
pr_cutime, /* Cumulative user time. */
pr_cstime; /* Cumulative system time. */
elf_gregset_t32 pr_reg; /* GP registers. */
int pr_fpvalid; /* True if math copro being used. */
};
struct elf_prpsinfo32
{
char pr_state; /* Numeric process state. */
char pr_sname; /* Char for pr_state. */
char pr_zomb; /* Zombie. */
char pr_nice; /* Nice val. */
unsigned int pr_flag; /* Flags. */
unsigned short int pr_uid;
unsigned short int pr_gid;
int pr_pid, pr_ppid, pr_pgrp, pr_sid;
/* Lots missing */
char pr_fname[16]; /* Filename of executable. */
char pr_psargs[ELF_PRARGSZ]; /* Initial part of arg list. */
};
typedef elf_gregset_t32 prgregset32_t;
typedef elf_fpregset_t32 prfpregset32_t;
typedef struct elf_prstatus32 prstatus32_t;
typedef struct elf_prpsinfo32 prpsinfo32_t;
#endif /* sparc64 */
__END_DECLS
#endif /* sys/procfs.h */