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* ppc-sysv-tdep.c (ppc_sysv_abi_push_dummy_call): Set condition 

register appropriately for varargs functions.
This commit is contained in:
Mark Kettenis 2005-08-16 17:12:35 +00:00
parent 1410d87caf
commit 65ada037fc
2 changed files with 25 additions and 2 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2005-08-16 Mark Kettenis <kettenis@gnu.org>
* ppc-sysv-tdep.c (ppc_sysv_abi_push_dummy_call): Set condition
register appropriately for varargs functions.
2005-08-15 Kevin Buettner <kevinb@redhat.com>
* MAINTAINERS (ms1): New target ISA entry. List myself as

22
gdb/ppc-sysv-tdep.c
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@ -1,8 +1,8 @@
/* Target-dependent code for PowerPC systems using the SVR4 ABI
for GDB, the GNU debugger.
Copyright 2000, 2001, 2002, 2003, 2005 Free Software Foundation,
Inc.
Copyright 2000, 2001, 2002, 2003, 2005
Free Software Foundation, Inc.
This file is part of GDB.
@ -295,6 +295,24 @@ ppc_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
/* Ensure that the stack is still 16 byte aligned. */
sp = align_down (sp, 16);
}
/* The psABI says that "A caller of a function that takes a
variable argument list shall set condition register bit 6 to
1 if it passes one or more arguments in the floating-point
registers. It is strongly recommended that the caller set the
bit to 0 otherwise..." Doing this for normal functions too
shouldn't hurt. */
if (write_pass)
{
ULONGEST cr;
regcache_cooked_read_unsigned (regcache, tdep->ppc_cr_regnum, &cr);
if (freg > 1)
cr |= 0x02000000;
else
cr &= ~0x02000000;
regcache_cooked_write_unsigned (regcache, tdep->ppc_cr_regnum, cr);
}
}
/* Update %sp. */