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Revert "Initial revision"

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This reverts e6446885f4 commit.
This commit is contained in:
David Mosberger-Tang 2006-07-26 14:53:49 -06:00
parent a369768c27
commit 6daeeac60a
8 changed files with 465 additions and 31 deletions
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74
src/hppa/Gis_signal_frame.c
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/* libunwind - a platform-independent unwind library
Copyright (C) 2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include "unwind_i.h"
PROTECTED int
unw_is_signal_frame (unw_cursor_t *cursor)
{
#ifdef __linux__
struct cursor *c = (struct cursor *) cursor;
unw_word_t w0, w1, w2, w3, ip;
unw_addr_space_t as;
unw_accessors_t *a;
void *arg;
int ret;
as = c->dwarf.as;
a = unw_get_accessors (as);
arg = c->dwarf.as_arg;
/* Check if IP points at sigreturn() sequence. On Linux, this normally is:
rt_sigreturn:
0x34190000 ldi 0, %r25
0x3414015a ldi __NR_rt_sigreturn,%r20
0xe4008200 be,l 0x100(%sr2,%r0),%sr0,%r31
0x08000240 nop
When a signal interrupts a system call, the first word is instead:
0x34190002 ldi 1, %r25
*/
ip = c->dwarf.ip;
if (!ip)
return 0;
if ((ret = (*a->access_mem) (as, ip, &w0, 0, arg)) < 0
|| (ret = (*a->access_mem) (as, ip + 4, &w1, 0, arg)) < 0
|| (ret = (*a->access_mem) (as, ip + 8, &w2, 0, arg)) < 0
|| (ret = (*a->access_mem) (as, ip + 12, &w3, 0, arg)) < 0)
{
Debug (1, "failed to read sigreturn code (ret=%d)\n", ret);
return ret;
}
ret = ((w0 == 0x34190000 || w0 == 0x34190002)
&& w1 == 0x3414015a && w2 == 0xe4008200 && w3 == 0x08000240);
Debug (1, "(cursor=%p, ip=0x%08lx) -> %d\n", c, (unsigned) ip, ret);
return ret;
#else
printf ("%s: implement me\n", __FUNCTION__);
#endif
return -UNW_ENOINFO;
}

145
src/hppa/Gresume.c
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/* libunwind - a platform-independent unwind library
Copyright (c) 2004 Hewlett-Packard Development Company, L.P.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include <stdlib.h>
#include "unwind_i.h"
#ifndef UNW_REMOTE_ONLY
#if defined(__linux)
# include <sys/syscall.h>
static NORETURN inline long
my_rt_sigreturn (void *new_sp, int in_syscall)
{
register unsigned long r25 __asm__ ("r25") = (in_syscall != 0);
register unsigned long r20 __asm__ ("r20") = SYS_rt_sigreturn;
__asm__ __volatile__ ("copy %0, %%sp\n"
"be,l 0x100(%%sr2,%%r0),%%sr0,%%r31\n"
"nop"
:
: "r"(new_sp), "r"(r20), "r"(r25)
: "memory");
abort ();
}
#endif /* __linux */
HIDDEN inline int
hppa_local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
{
#if defined(__linux)
struct cursor *c = (struct cursor *) cursor;
ucontext_t *uc = c->dwarf.as_arg;
/* Ensure c->pi is up-to-date. On PA-RISC, it's relatively common to be
missing DWARF unwind info. We don't want to fail in that case,
because the frame-chain still would let us do a backtrace at
least. */
dwarf_make_proc_info (&c->dwarf);
if (unlikely (c->sigcontext_format != HPPA_SCF_NONE))
{
struct sigcontext *sc = (struct sigcontext *) c->sigcontext_addr;
Debug (8, "resuming at ip=%x via sigreturn(%p)\n", c->dwarf.ip, sc);
my_rt_sigreturn (sc, (sc->sc_flags & PARISC_SC_FLAG_IN_SYSCALL) != 0);
}
else
{
Debug (8, "resuming at ip=%x via setcontext()\n", c->dwarf.ip);
setcontext (uc);
}
#else
# warning Implement me!
#endif
return -UNW_EINVAL;
}
#endif /* !UNW_REMOTE_ONLY */
/* This routine is responsible for copying the register values in
cursor C and establishing them as the current machine state. */
static inline int
establish_machine_state (struct cursor *c)
{
int (*access_reg) (unw_addr_space_t, unw_regnum_t, unw_word_t *,
int write, void *);
int (*access_fpreg) (unw_addr_space_t, unw_regnum_t, unw_fpreg_t *,
int write, void *);
unw_addr_space_t as = c->dwarf.as;
void *arg = c->dwarf.as_arg;
unw_fpreg_t fpval;
unw_word_t val;
int reg;
access_reg = as->acc.access_reg;
access_fpreg = as->acc.access_fpreg;
Debug (8, "copying out cursor state\n");
for (reg = 0; reg <= UNW_REG_LAST; ++reg)
{
Debug (16, "copying %s %d\n", unw_regname (reg), reg);
if (unw_is_fpreg (reg))
{
if (tdep_access_fpreg (c, reg, &fpval, 0) >= 0)
(*access_fpreg) (as, reg, &fpval, 1, arg);
}
else
{
if (tdep_access_reg (c, reg, &val, 0) >= 0)
(*access_reg) (as, reg, &val, 1, arg);
}
}
return 0;
}
PROTECTED int
unw_resume (unw_cursor_t *cursor)
{
struct cursor *c = (struct cursor *) cursor;
int ret;
Debug (1, "(cursor=%p)\n", c);
if (!c->dwarf.ip)
{
/* This can happen easily when the frame-chain gets truncated
due to bad or missing unwind-info. */
Debug (1, "refusing to resume execution at address 0\n");
return -UNW_EINVAL;
}
if ((ret = establish_machine_state (c)) < 0)
return ret;
return (*c->dwarf.as->acc.resume) (c->dwarf.as, (unw_cursor_t *) c,
c->dwarf.as_arg);
}

70
src/hppa/getcontext.S
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/* libunwind - a platform-independent unwind library
Copyright (C) 2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#define SPILL(n) stw %r##n, (LINUX_UC_MCONTEXT_OFF+LINUX_SC_GR_OFF+4*(n))(%r26)
#include "offsets.h"
.align 4
.protected _Uhppa_getcontext
.global _Uhppa_getcontext
.proc
.callinfo
_Uhppa_getcontext:
SPILL (2) /* return-pointer */
SPILL (3) /* frame pointer */
SPILL (4) /* 2nd-ary frame pointer */
SPILL (5) /* preserved register */
SPILL (6) /* preserved register */
SPILL (7) /* preserved register */
SPILL (8) /* preserved register */
SPILL (9) /* preserved register */
SPILL (10) /* preserved register */
SPILL (11) /* preserved register */
SPILL (12) /* preserved register */
SPILL (13) /* preserved register */
SPILL (14) /* preserved register */
SPILL (15) /* preserved register */
SPILL (16) /* preserved register */
SPILL (17) /* preserved register */
SPILL (18) /* preserved register */
SPILL (19) /* linkage-table register */
SPILL (27) /* global-data pointer */
SPILL (30) /* stack pointer */
ldo (LINUX_UC_MCONTEXT_OFF+LINUX_SC_FR_OFF)(%r26), %r29
fstds,ma %fr12, 8(%r29)
fstds,ma %fr13, 8(%r29)
fstds,ma %fr14, 8(%r29)
fstds,ma %fr15, 8(%r29)
fstds,ma %fr16, 8(%r29)
fstds,ma %fr17, 8(%r29)
fstds,ma %fr18, 8(%r29)
fstds,ma %fr19, 8(%r29)
fstds,ma %fr20, 8(%r29)
fstds %fr21, 8(%r29)
bv,n %r0(%rp)
.procend

17
src/hppa/offsets.h
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#define LINUX_UC_FLAGS_OFF 0x000
#define LINUX_UC_LINK_OFF 0x004
#define LINUX_UC_STACK_OFF 0x008
#define LINUX_UC_MCONTEXT_OFF 0x018
#define LINUX_UC_SIGMASK_OFF 0x1b8
#define LINUX_SC_FLAGS_OFF 0x000
#define LINUX_SC_GR_OFF 0x004
#define LINUX_SC_FR_OFF 0x088
#define LINUX_SC_IASQ_OFF 0x188
#define LINUX_SC_IAOQ_OFF 0x190
#define LINUX_SC_SAR_OFF 0x198
/* The signal frame contains 4 words of space for the sigreturn
trampoline, the siginfo structure, and then the sigcontext
structure. See include/asm-parisc/compat_rt_sigframe.h. */
#define LINUX_RT_SIGFRAME_UC_OFF 0xac

50
src/hppa/regname.c
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/* libunwind - a platform-independent unwind library
Copyright (c) 2004-2005 Hewlett-Packard Development Company, L.P.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#include "unwind_i.h"
static const char *regname[] =
{
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
"fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
"fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
"fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
"fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31",
"ip",
"eh0", "eh1", "eh2", "eh3",
"cfa"
};
PROTECTED const char *
unw_regname (unw_regnum_t reg)
{
if (reg < (unw_regnum_t) ARRAY_SIZE (regname))
return regname[reg];
else
return "???";
}

73
src/hppa/setcontext.S
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/* libunwind - a platform-independent unwind library
Copyright (C) 2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/* The setcontext() in glibc is a no-op (as of 4 Dec 2004), so we have
to implement something useful on our own here. */
#define FILL(n) ldw (LINUX_UC_MCONTEXT_OFF+LINUX_SC_GR_OFF+4*(n))(%r26),%r##n
#include "offsets.h"
.align 4
.global _Uhppa_setcontext
.protected _Uhppa_setcontext
.proc
.callinfo
_Uhppa_setcontext:
FILL (2) /* return-pointer */
FILL (3) /* frame pointer */
FILL (4) /* 2nd-ary frame pointer */
FILL (5) /* preserved register */
FILL (6) /* preserved register */
FILL (7) /* preserved register */
FILL (8) /* preserved register */
FILL (9) /* preserved register */
FILL (10) /* preserved register */
FILL (11) /* preserved register */
FILL (12) /* preserved register */
FILL (13) /* preserved register */
FILL (14) /* preserved register */
FILL (15) /* preserved register */
FILL (16) /* preserved register */
FILL (17) /* preserved register */
FILL (18) /* preserved register */
FILL (19) /* linkage-table register */
FILL (27) /* global-data pointer */
FILL (30) /* stack pointer */
ldo (LINUX_UC_MCONTEXT_OFF+LINUX_SC_FR_OFF)(%r26), %r29
fldds,ma 8(%r29), %fr12
fldds,ma 8(%r29), %fr13
fldds,ma 8(%r29), %fr14
fldds,ma 8(%r29), %fr15
fldds,ma 8(%r29), %fr16
fldds,ma 8(%r29), %fr17
fldds,ma 8(%r29), %fr18
fldds,ma 8(%r29), %fr19
fldds,ma 8(%r29), %fr20
fldds 8(%r29), %fr21
bv,n %r0(%rp)
.procend

33
src/x86_64/longjmp.S
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/* libunwind - a platform-independent unwind library
Copyright (C) 2004-2005 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
.globl _UI_longjmp_cont
.type _UI_longjmp_cont, @function
_UI_longjmp_cont:
push %rax /* push target IP as return address */
mov %rdx, %rax /* set up return-value */
retq
.size _UI_longjmp_cont, .-_UI_longjmp_cont

34
src/x86_64/setcontext.S
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@ -1,32 +1,4 @@
/* libunwind - a platform-independent unwind library
Copyright (C) 2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
.global _UI_setcontext
This file is part of libunwind.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/* Use glibc's jump-buffer indices; NPTL peeks at SP and BSP: */
#define JB_SP 0
#define JB_RP 8
#define JB_BSP 17
#define JB_MASK_SAVED 70
#define JB_MASK 71
_UI_setcontext:
retq