diff options
Diffstat (limited to 'gas/config/tc-avr.c')
| -rw-r--r-- | gas/config/tc-avr.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/gas/config/tc-avr.c b/gas/config/tc-avr.c index d382fd9..5049d11 100644 --- a/gas/config/tc-avr.c +++ b/gas/config/tc-avr.c @@ -326,8 +326,10 @@ static struct mcu_type_s mcu_types[] = {NULL, 0, 0} }; + /* Current MCU type. */ static struct mcu_type_s default_mcu = {"avr2", AVR_ISA_AVR2, bfd_mach_avr2}; +static struct mcu_type_s specified_mcu; static struct mcu_type_s * avr_mcu = & default_mcu; /* AVR target-specific switches. */ @@ -398,7 +400,8 @@ enum options { OPTION_ALL_OPCODES = OPTION_MD_BASE + 1, OPTION_NO_SKIP_BUG, - OPTION_NO_WRAP + OPTION_NO_WRAP, + OPTION_ISA_RMW }; struct option md_longopts[] = @@ -407,6 +410,7 @@ struct option md_longopts[] = { "mall-opcodes", no_argument, NULL, OPTION_ALL_OPCODES }, { "mno-skip-bug", no_argument, NULL, OPTION_NO_SKIP_BUG }, { "mno-wrap", no_argument, NULL, OPTION_NO_WRAP }, + { "mrmw", no_argument, NULL, OPTION_ISA_RMW }, { NULL, no_argument, NULL, 0 } }; @@ -511,7 +515,9 @@ md_show_usage (FILE *stream) " -mno-skip-bug disable warnings for skipping two-word instructions\n" " (default for avr4, avr5)\n" " -mno-wrap reject rjmp/rcall instructions with 8K wrap-around\n" - " (default for avr3, avr5)\n")); + " (default for avr3, avr5)\n" + " -mrmw accept Read-Modify-Write instructions\n" + )); show_mcu_list (stream); } @@ -558,7 +564,12 @@ md_parse_option (int c, char *arg) type - this for allows passing -mmcu=... via gcc ASM_SPEC as well as .arch ... in the asm output at the same time. */ if (avr_mcu == &default_mcu || avr_mcu->mach == mcu_types[i].mach) - avr_mcu = &mcu_types[i]; + { + specified_mcu.name = mcu_types[i].name; + specified_mcu.isa |= mcu_types[i].isa; + specified_mcu.mach = mcu_types[i].mach; + avr_mcu = &specified_mcu; + } else as_fatal (_("redefinition of mcu type `%s' to `%s'"), avr_mcu->name, mcu_types[i].name); @@ -573,6 +584,9 @@ md_parse_option (int c, char *arg) case OPTION_NO_WRAP: avr_opt.no_wrap = 1; return 1; + case OPTION_ISA_RMW: + specified_mcu.isa |= AVR_ISA_RMW; + return 1; } return 0; |