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Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index b414915..a4dfdd8 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -5620,6 +5620,27 @@ c_warn_unused_result (tree *top_p) } } +/* Convert a character from the host to the target execution character + set. cpplib handles this, mostly. */ + +HOST_WIDE_INT +c_common_to_target_charset (HOST_WIDE_INT c) +{ + /* Character constants in GCC proper are sign-extended under -fsigned-char, + zero-extended under -fno-signed-char. cpplib insists that characters + and character constants are always unsigned. Hence we must convert + back and forth. */ + cppchar_t uc = ((cppchar_t)c) & ((((cppchar_t)1) << CHAR_BIT)-1); + + uc = cpp_host_to_exec_charset (parse_in, uc); + + if (flag_signed_char) + return ((HOST_WIDE_INT)uc) << (HOST_BITS_PER_WIDE_INT - CHAR_TYPE_SIZE) + >> (HOST_BITS_PER_WIDE_INT - CHAR_TYPE_SIZE); + else + return uc; +} + /* Build the result of __builtin_offsetof. EXPR is a nested sequence of component references, with an INDIRECT_REF at the bottom; much like the traditional rendering of offsetof as a macro. Returns the folded |