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Carl Shapiro
cmucl
Commits
7fbce9e3
Commit
7fbce9e3
authored
15 years ago
by
rswindells
Browse files
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Plain Diff
Add new FPU interface code.
parent
3d58c145
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Changes
2
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2 changed files
lisp/NetBSD-os.c
+125
-1
125 additions, 1 deletion
lisp/NetBSD-os.c
lisp/NetBSD-os.h
+4
-1
4 additions, 1 deletion
lisp/NetBSD-os.h
with
129 additions
and
2 deletions
lisp/NetBSD-os.c
+
125
−
1
View file @
7fbce9e3
...
...
@@ -15,7 +15,7 @@
* Frobbed for OpenBSD by Pierre R. Mai, 2001.
* Frobbed for NetBSD by Pierre R. Mai, 2002.
*
* $Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/lisp/NetBSD-os.c,v 1.1
1
200
8/12/07 02:33:55 agoncharov Exp
$
* $Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/lisp/NetBSD-os.c,v 1.1
2
200
9/08/30 19:17:55 rswindells Rel
$
*
*/
...
...
@@ -84,6 +84,61 @@ os_sigcontext_pc(ucontext_t *scp)
#endif
}
unsigned
char
*
os_sigcontext_fpu_reg
(
ucontext_t
*
scp
,
int
index
)
{
unsigned
char
*
reg
=
NULL
;
if
(
scp
->
uc_flags
&
_UC_FPU
)
{
if
(
scp
->
uc_flags
&
_UC_FXSAVE
)
{
reg
=
scp
->
uc_mcontext
.
__fpregs
.
__fp_reg_set
.
__fp_xmm_state
.
__fp_xmm
[
index
];
}
else
{
reg
=
scp
->
uc_mcontext
.
__fpregs
.
__fp_reg_set
.
__fpchip_state
.
__fp_state
[
index
];
}
}
else
{
reg
=
NULL
;
}
return
reg
;
}
unsigned
int
os_sigcontext_fpu_modes
(
ucontext_t
*
scp
)
{
unsigned
int
modes
;
union
savefpu
*
sv
=
(
union
savefpu
*
)
&
scp
->
uc_mcontext
.
__fpregs
.
__fp_reg_set
;
struct
env87
*
env_87
=
(
struct
env87
*
)
&
sv
->
sv_87
.
sv_env
;
struct
envxmm
*
env_xmm
=
(
struct
envxmm
*
)
&
sv
->
sv_xmm
.
sv_env
;
u_int16_t
cw
;
u_int16_t
sw
;
if
(
scp
->
uc_flags
&
_UC_FPU
)
{
if
(
scp
->
uc_flags
&
_UC_FXSAVE
)
{
cw
=
env_xmm
->
en_cw
;
sw
=
env_xmm
->
en_sw
;
}
else
{
cw
=
env_87
->
en_cw
&
0xffff
;
sw
=
env_87
->
en_sw
&
0xffff
;
}
}
else
{
cw
=
0
;
sw
=
0x3f
;
}
modes
=
((
cw
&
0x3f
)
<<
7
)
|
(
sw
&
0x3f
);
#ifdef FEATURE_SSE2
if
(
fpu_mode
==
SSE2
)
{
u_int32_t
mxcsr
=
env_xmm
->
en_mxcsr
;
DPRINTF
(
0
,
(
stderr
,
"SSE2 modes = %08x
\n
"
,
(
int
)
mxcsr
));
modes
|=
mxcsr
;
}
#endif
modes
^=
(
0x3f
<<
7
);
return
modes
;
}
os_vm_address_t
os_validate
(
os_vm_address_t
addr
,
os_vm_size_t
len
)
{
...
...
@@ -236,11 +291,52 @@ sigbus_handler(HANDLER_ARGS)
interrupt_handle_now
(
signal
,
code
,
context
);
}
/*
* Restore the exception flags cleared by the kernel. These bits must
* be set for Lisp to determine which exception caused the signal. At
* present, there is no way to distinguish underflow exceptions from
* denormalized operand exceptions. An underflow exception is assumed
* if the subcode is FPE_FLTUND.
*/
static
void
sigfpe_handler
(
HANDLER_ARGS
)
{
ucontext_t
*
ucontext
=
(
ucontext_t
*
)
context
;
union
savefpu
*
sv
=
(
union
savefpu
*
)
&
ucontext
->
uc_mcontext
.
__fpregs
.
__fp_reg_set
;
unsigned
char
trap
=
0
;
switch
(
code
->
si_code
)
{
case
FPE_FLTDIV
:
/* ZE */
trap
=
0x04
;
break
;
case
FPE_FLTOVF
:
/* OE */
trap
=
0x08
;
break
;
case
FPE_FLTUND
:
/* DE or UE */
trap
=
0x10
;
break
;
case
FPE_FLTRES
:
/* PE */
trap
=
0x20
;
break
;
case
FPE_FLTINV
:
/* IE */
trap
=
0x01
;
break
;
}
if
(
ucontext
->
uc_flags
&
_UC_FXSAVE
)
{
sv
->
sv_xmm
.
sv_env
.
en_sw
|=
trap
;
}
else
{
sv
->
sv_87
.
sv_env
.
en_sw
|=
trap
;
}
interrupt_handle_now
(
signal
,
code
,
context
);
}
void
os_install_interrupt_handlers
(
void
)
{
interrupt_install_low_level_handler
(
SIGSEGV
,
sigsegv_handler
);
interrupt_install_low_level_handler
(
SIGBUS
,
sigbus_handler
);
interrupt_install_low_level_handler
(
SIGFPE
,
sigfpe_handler
);
}
void
*
...
...
@@ -262,3 +358,31 @@ os_dlsym(const char *sym_name, lispobj lib_list)
return
dlsym
(
RTLD_DEFAULT
,
sym_name
);
}
void
restore_fpu
(
ucontext_t
*
scp
)
{
union
savefpu
*
sv
=
(
union
savefpu
*
)
&
scp
->
uc_mcontext
.
__fpregs
.
__fp_reg_set
;
struct
env87
*
env_87
=
&
sv
->
sv_87
.
sv_env
;
struct
envxmm
*
env_xmm
=
&
sv
->
sv_xmm
.
sv_env
;
u_int16_t
cw
;
if
(
scp
->
uc_flags
&
_UC_FPU
)
{
if
(
scp
->
uc_flags
&
_UC_FXSAVE
)
{
cw
=
env_xmm
->
en_cw
;
}
else
{
cw
=
env_87
->
en_cw
&
0xffff
;
}
}
else
{
return
;
}
DPRINTF
(
0
,
(
stderr
,
"restore_fpu: cw = %08x
\n
"
,
(
int
)
cw
));
__asm__
__volatile__
(
"fldcw %0"
::
"m"
(
*&
cw
));
if
(
arch_support_sse2
())
{
u_int32_t
mxcsr
=
env_xmm
->
en_mxcsr
;
DPRINTF
(
0
,
(
stderr
,
"restore_fpu: mxcsr (raw) = %04x
\n
"
,
mxcsr
));
__asm__
__volatile__
(
"ldmxcsr %0"
::
"m"
(
*&
mxcsr
));
}
}
This diff is collapsed.
Click to expand it.
lisp/NetBSD-os.h
+
4
−
1
View file @
7fbce9e3
/*
$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/lisp/NetBSD-os.h,v 1.
8
200
8/05/16 13:30:22
rswindells
Exp
$
$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/lisp/NetBSD-os.h,v 1.
9
200
9/08/30 19:17:55
rswindells
Rel
$
This code was written as part of the CMU Common Lisp project at
Carnegie Mellon University, and has been placed in the public domain.
...
...
@@ -36,6 +36,9 @@ typedef int os_vm_prot_t;
#define HANDLER_ARGS int signal, siginfo_t *code, ucontext_t *context
#define CODE(code) ((code) ? code->si_code : 0)
#define RESTORE_FPU(context) restore_fpu(context)
void
restore_fpu
(
ucontext_t
*
);
#define PROTECTION_VIOLATION_SIGNAL SIGSEGV
...
...
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