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* lynx-nat.c (child_wait): Correct handling of byte reversed SPARC 

Lynx wait status.
	(fetch_core_registers): Don't try to fetch a register if
	regmap maps it to -1.
	* sparc-tdep.c (sparc_frame_find_saved_regs): Use FRAME_SAVED_I0
	and FRAME_SAVED_L0 when setting saved_regs_addr.  SPARC Lynx
	stores the registers in a weird order.
These patches make SPARC Lynx gdb usable, though it still has problems.
This commit is contained in:
Ian Lance Taylor 1994-10-11 21:08:57 +00:00
parent b255ccdb40
commit 60e86a677e
2 changed files with 37 additions and 6 deletions
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10
gdb/ChangeLog
View File

@ -1,3 +1,13 @@
Tue Oct 11 15:51:01 1994 Ian Lance Taylor <ian@sanguine.cygnus.com>
* lynx-nat.c (child_wait): Correct handling of byte reversed SPARC
Lynx wait status.
(fetch_core_registers): Don't try to fetch a register if
regmap maps it to -1.
* sparc-tdep.c (sparc_frame_find_saved_regs): Use FRAME_SAVED_I0
and FRAME_SAVED_L0 when setting saved_regs_addr. SPARC Lynx
stores the registers in a weird order.
Sat Oct 8 20:59:13 1994 Jim Kingdon (kingdon@lioth.cygnus.com)
* blockframe.c (reinit_frame_cache): Reinstate select_frame call

33
gdb/lynx-nat.c
View File

@ -606,10 +606,6 @@ child_wait (pid, ourstatus)
set_sigint_trap(); /* Causes SIGINT to be passed on to the
attached process. */
pid = wait (&status);
#ifdef SPARC
/* Swap halves of status so that the rest of GDB can understand it */
status.w_status = ((unsigned)status.w_status << 16) | ((unsigned)status.w_status >> 16);
#endif
save_errno = errno;
@ -662,7 +658,31 @@ child_wait (pid, ourstatus)
}
}
#ifdef SPARC
/* SPARC Lynx uses an byte reversed wait status; we must use the
host macros to access it. These lines just a copy of
store_waitstatus. We can't use CHILD_SPECIAL_WAITSTATUS
because target.c can't include the Lynx <sys/wait.h>. */
if (WIFEXITED (status))
{
ourstatus->kind = TARGET_WAITKIND_EXITED;
ourstatus->value.integer = WEXITSTATUS (status);
}
else if (!WIFSTOPPED (status))
{
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
ourstatus->value.sig =
target_signal_from_host (WTERMSIG (status));
}
else
{
ourstatus->kind = TARGET_WAITKIND_STOPPED;
ourstatus->value.sig =
target_signal_from_host (WSTOPSIG (status));
}
#else
store_waitstatus (ourstatus, status.w_status);
#endif
return pid;
}
@ -744,8 +764,9 @@ fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
unsigned int regno;
for (regno = 0; regno < NUM_REGS; regno++)
supply_register (regno, core_reg_sect + offsetof (st_t, ec)
+ regmap[regno]);
if (regmap[regno] != -1)
supply_register (regno, core_reg_sect + offsetof (st_t, ec)
+ regmap[regno]);
#ifdef SPARC
/* Fetching this register causes all of the I & L regs to be read from the