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* sparcobsd-tdep.c: Include "gdbcore.h", "regcache.h" and

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"bsd-uthread.h".
(SPARC32OBSD_UTHREAD_FP_OFFSET, SPARC32OBSD_UTHREAD_PC_OFFSET):
New defines.
(sparc32obsd_supply_uthread, sparc32obsd_collect_uthread): New
functions.
(sparc32obsd_init_abi): Set supply_uthread and collect_uthread.
* Makefile.in (sparcobsd-tdep.o): Update dependencies.
* config/sparc/obsd.mt (TDEPFILES): Add bsd-uthread.o.
* config/sparc/obsd64.mt (TDEPFILES): Likewise.
This commit is contained in:
Mark Kettenis
2005-12-27 12:23:02 +00:00
parent 0359e808fd
commit 92c2d36aa1
5 changed files with 108 additions and 5 deletions
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91
gdb/sparcobsd-tdep.c
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@@ -23,8 +23,9 @@
#include "floatformat.h"
#include "frame.h"
#include "frame-unwind.h"
#include "gdbcore.h"
#include "osabi.h"
#include "solib-svr4.h"
#include "regcache.h"
#include "symtab.h"
#include "trad-frame.h"
@@ -32,6 +33,8 @@
#include "obsd-tdep.h"
#include "sparc-tdep.h"
#include "solib-svr4.h"
#include "bsd-uthread.h"
/* Signal trampolines. */
@@ -143,6 +146,88 @@ sparc32obsd_sigtramp_frame_sniffer (struct frame_info *next_frame)
}
/* Offset wthin the thread structure where we can find %fp and %i7. */
#define SPARC32OBSD_UTHREAD_FP_OFFSET 128
#define SPARC32OBSD_UTHREAD_PC_OFFSET 132
static void
sparc32obsd_supply_uthread (struct regcache *regcache,
int regnum, CORE_ADDR addr)
{
CORE_ADDR fp, fp_addr = addr + SPARC32OBSD_UTHREAD_FP_OFFSET;
gdb_byte buf[4];
gdb_assert (regnum >= -1);
fp = read_memory_unsigned_integer (fp_addr, 4);
if (regnum == SPARC_SP_REGNUM || regnum == -1)
{
store_unsigned_integer (buf, 4, fp);
regcache_raw_supply (regcache, SPARC_SP_REGNUM, buf);
if (regnum == SPARC_SP_REGNUM)
return;
}
if (regnum == SPARC32_PC_REGNUM || regnum == SPARC32_NPC_REGNUM
|| regnum == -1)
{
CORE_ADDR i7, i7_addr = addr + SPARC32OBSD_UTHREAD_PC_OFFSET;
i7 = read_memory_unsigned_integer (i7_addr, 4);
if (regnum == SPARC32_PC_REGNUM || regnum == -1)
{
store_unsigned_integer (buf, 4, i7 + 8);
regcache_raw_supply (regcache, SPARC32_PC_REGNUM, buf);
}
if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
{
store_unsigned_integer (buf, 4, i7 + 12);
regcache_raw_supply (regcache, SPARC32_NPC_REGNUM, buf);
}
if (regnum == SPARC32_PC_REGNUM || regnum == SPARC32_NPC_REGNUM)
return;
}
sparc_supply_rwindow (regcache, fp, regnum);
}
static void
sparc32obsd_collect_uthread(const struct regcache *regcache,
int regnum, CORE_ADDR addr)
{
CORE_ADDR sp;
gdb_byte buf[4];
gdb_assert (regnum >= -1);
if (regnum == SPARC_SP_REGNUM || regnum == -1)
{
CORE_ADDR fp_addr = addr + SPARC32OBSD_UTHREAD_FP_OFFSET;
regcache_raw_collect (regcache, SPARC_SP_REGNUM, buf);
write_memory (fp_addr,buf, 4);
}
if (regnum == SPARC32_PC_REGNUM || regnum == -1)
{
CORE_ADDR i7, i7_addr = addr + SPARC32OBSD_UTHREAD_PC_OFFSET;
regcache_raw_collect (regcache, SPARC32_PC_REGNUM, buf);
i7 = extract_unsigned_integer (buf, 4) - 8;
write_memory_unsigned_integer (i7_addr, 4, i7);
if (regnum == SPARC32_PC_REGNUM)
return;
}
regcache_raw_collect (regcache, SPARC_SP_REGNUM, buf);
sp = extract_unsigned_integer (buf, 4);
sparc_collect_rwindow (regcache, sp, regnum);
}
static void
sparc32obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
@@ -154,6 +239,10 @@ sparc32obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
set_gdbarch_skip_solib_resolver (gdbarch, obsd_skip_solib_resolver);
frame_unwind_append_sniffer (gdbarch, sparc32obsd_sigtramp_frame_sniffer);
/* OpenBSD provides a user-level threads implementation. */
bsd_uthread_set_supply_uthread (gdbarch, sparc32obsd_supply_uthread);
bsd_uthread_set_collect_uthread (gdbarch, sparc32obsd_collect_uthread);
}