diff options
Diffstat (limited to 'gcc/config/m32c/m32c-pragma.c')
| -rw-r--r-- | gcc/config/m32c/m32c-pragma.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/config/m32c/m32c-pragma.c b/gcc/config/m32c/m32c-pragma.c index 49fe023..b576152 100644 --- a/gcc/config/m32c/m32c-pragma.c +++ b/gcc/config/m32c/m32c-pragma.c @@ -87,9 +87,47 @@ m32c_pragma_memregs (cpp_reader * reader ATTRIBUTE_UNUSED) error ("#pragma GCC memregs takes a number [0..16]"); } +/* Implements the "pragma ADDRESS" pragma. This pragma takes a + variable name and an address, and arranges for that variable to be + "at" that address. The variable is also made volatile. */ +static void +m32c_pragma_address (cpp_reader * reader ATTRIBUTE_UNUSED) +{ + /* on off */ + tree var, addr; + enum cpp_ttype type; + const char *var_str; + + type = pragma_lex (&var); + if (type == CPP_NAME) + { + var_str = IDENTIFIER_POINTER (var); + + type = pragma_lex (&addr); + if (type == CPP_NUMBER) + { + if (var != error_mark_node) + { + unsigned uaddr = tree_low_cst (addr, 1); + m32c_note_pragma_address (IDENTIFIER_POINTER (var), uaddr); + } + + type = pragma_lex (&var); + if (type != CPP_EOF) + { + error ("junk at end of #pragma ADDRESS"); + } + return; + } + } + error ("malformed #pragma ADDRESS variable address"); +} + /* Implements REGISTER_TARGET_PRAGMAS. */ void m32c_register_pragmas (void) { c_register_pragma ("GCC", "memregs", m32c_pragma_memregs); + c_register_pragma (NULL, "ADDRESS", m32c_pragma_address); + c_register_pragma (NULL, "address", m32c_pragma_address); } |