Dave Korn wrote:
I've been having some trouble building gcc 4.0.1 for mips target on a
mingw host
No you aren't. You're using a modified version of the gcc-4.0.1 sources
and you're targetting PSP. That may be a MIPS backend, but it's a different
_target_.
:) fair enough, the patches are currently minimal for gcc though.
Hmm. Perhaps we have HOST_WIDE_INT problems for mingw host here? If
cfun->machine->frame.var_size was a long long, and HOST_WIDE_INT_PRINT_DEC
for mingw is just "%d" or "%ld" rather than "%lld", that would push an extra
NULL word onto the stack that would be taken as the parameter for %s because
the "%d" wouldn't be advancing the varargs pointer past the whole of the
second format arg...
And that's exactly the problem.
in /gcc/config/i386/xm-mingw32.h we have
/* MSVCRT does not support the "ll" format specifier for printing
"long long" values. Instead, we use "I64". */
#define HOST_LONG_LONG_FORMAT "I64"
then in gcc/hwint.h we have
/* The string that should be inserted into a printf style format to
indicate a "long long" operand. */
#ifndef HOST_LONG_LONG_FORMAT
#define HOST_LONG_LONG_FORMAT "ll"
#endif
and later in the same file
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
# define HOST_WIDE_INT_PRINT "l"
# define HOST_WIDE_INT_PRINT_C "L"
/* 'long' might be 32 or 64 bits, and the number of leading zeroes
must be tweaked accordingly. */
# if HOST_BITS_PER_WIDE_INT == 64
# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%016lx"
# else
# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx"
# endif
#else
# define HOST_WIDE_INT_PRINT "ll"
# define HOST_WIDE_INT_PRINT_C "LL"
/* We can assume that 'long long' is at least 64 bits. */
# define HOST_WIDE_INT_PRINT_DOUBLE_HEX \
"0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x"
#endif /* HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG */
so the HOST_WIDE_INT_PRINT ignores the mingw override.
I've currently patched as follows
diff -Naurb gcc-4.0.1/gcc/hwint.h gcc-4.0.1-new/gcc/hwint.h
--- gcc-4.0.1/gcc/hwint.h Wed Nov 24 04:31:57 2004
+++ gcc-4.0.1-new/gcc/hwint.h Thu Jul 21 14:37:06 2005
@@ -80,7 +80,7 @@
# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx"
# endif
#else
-# define HOST_WIDE_INT_PRINT "ll"
+# define HOST_WIDE_INT_PRINT HOST_LONG_LONG_FORMAT
# define HOST_WIDE_INT_PRINT_C "LL"
/* We can assume that 'long long' is at least 64 bits. */
# define HOST_WIDE_INT_PRINT_DOUBLE_HEX \
This works for me and allows the build to complete. I'm not currently
sure if HOST_WIDE_INT_PRINT_C needs similar treatment.
I've created PR22594 - http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22594
Many thanks.
Dave
