diff options
Diffstat (limited to 'gcc/config/m68hc11/m68hc11.h')
| -rw-r--r-- | gcc/config/m68hc11/m68hc11.h | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/gcc/config/m68hc11/m68hc11.h b/gcc/config/m68hc11/m68hc11.h index 5a9fc529c64..32a9b6351ef 100644 --- a/gcc/config/m68hc11/m68hc11.h +++ b/gcc/config/m68hc11/m68hc11.h @@ -66,7 +66,8 @@ Note: %{!mshort:-D__INT__=32}\ %{m68hc12:-Dmc6812 -DMC6812 -Dmc68hc12}\ %{!m68hc12:-Dmc6811 -DMC6811 -Dmc68hc11}\ - %{fshort-double:-D__HAVE_SHORT_DOUBLE__}" + %{fshort-double:-D__HAVE_SHORT_DOUBLE__}\ + %{mlong-calls:-D__USE_RTC__}" #endif #undef STARTFILE_SPEC @@ -119,6 +120,7 @@ extern short *reg_renumber; /* def in local_alloc.c */ #define MASK_M6811 0010 #define MASK_M6812 0020 #define MASK_NO_DIRECT_MODE 0040 +#define MASK_LONG_CALLS 0200 #define TARGET_OP_TIME (optimize && optimize_size == 0) #define TARGET_SHORT (target_flags & MASK_SHORT) @@ -127,6 +129,7 @@ extern short *reg_renumber; /* def in local_alloc.c */ #define TARGET_AUTO_INC_DEC (target_flags & MASK_AUTO_INC_DEC) #define TARGET_NO_DIRECT_MODE (target_flags & MASK_NO_DIRECT_MODE) #define TARGET_RELAX (TARGET_NO_DIRECT_MODE) +#define TARGET_LONG_CALLS (target_flags & MASK_LONG_CALLS) /* Default target_flags if no switches specified. */ #ifndef TARGET_DEFAULT @@ -159,6 +162,10 @@ extern short *reg_renumber; /* def in local_alloc.c */ N_("Auto pre/post decrement increment allowed")}, \ { "noauto-incdec", - MASK_AUTO_INC_DEC, \ N_("Auto pre/post decrement increment not allowed")}, \ + { "long-calls", MASK_LONG_CALLS, \ + N_("Use call and rtc for function calls and returns")}, \ + { "nolong-calls", - MASK_LONG_CALLS, \ + N_("Use jsr and rts for function calls and returns")}, \ { "relax", MASK_NO_DIRECT_MODE, \ N_("Do not use direct addressing mode for soft registers")},\ { "68hc11", MASK_M6811, \ @@ -1549,6 +1556,45 @@ do { \ no longer contain unusual constructs. */ #define ASM_APP_OFF "; End of inline assembler code\n#NO_APP\n" +/* Write the extra assembler code needed to declare a function properly. + Some svr4 assemblers need to also have something extra said about the + function's return value. We allow for that here. + + For 68HC12 we mark functions that return with 'rtc'. The linker + will ensure that a 'call' is really made (instead of 'jsr'). + The debugger needs this information to correctly compute the stack frame. + + For 68HC11/68HC12 we also mark interrupt handlers for gdb to + compute the correct stack frame. */ + +#undef ASM_DECLARE_FUNCTION_NAME +#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ + do \ + { \ + fprintf (FILE, "%s", TYPE_ASM_OP); \ + assemble_name (FILE, NAME); \ + putc (',', FILE); \ + fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ + putc ('\n', FILE); \ + \ + if (TARGET_M6812 && current_function_far) \ + { \ + fprintf (FILE, "\t.far\t"); \ + assemble_name (FILE, NAME); \ + putc ('\n', FILE); \ + } \ + else if (current_function_interrupt \ + || current_function_trap) \ + { \ + fprintf (FILE, "\t.interrupt\t"); \ + assemble_name (FILE, NAME); \ + putc ('\b', FILE); \ + } \ + ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ + ASM_OUTPUT_LABEL(FILE, NAME); \ + } \ + while (0) + /* Output #ident as a .ident. */ /* output external reference */ @@ -1703,3 +1749,4 @@ extern int debug_m6811; extern int z_replacement_completed; extern int current_function_interrupt; extern int current_function_trap; +extern int current_function_far; |