From e2d1595531b62487749e1af680d8f0c48c684feb Mon Sep 17 00:00:00 2001 From: John Darrington Date: Tue, 21 May 2019 10:11:40 +0200 Subject: [PATCH] GAS: Replace macro LITERAL_PREFIXDOLLAR_HEX with a runtime value. In an upcoming commit, I need to be able to set the prefix used to introduce hexadecimal literal constants using a command line flag. This is not currently possible, because the switch which determines this (LITERAL_PREFIXDOLLAR_HEX) is a macro set at build time. This change substitutes it for a variable to be set at start up. gas/ChangeLog: * expr.c (literal_prefix_dollar_hex): New variable. (operand)[case '$']: Use the new variable instead of the old macro. Also, move this instance of "case '$'" next to the other one, and enable it only in the complementary proprocessor case. * expr.h (literal_prefix_dollar_hex): Declare it. * config/tc-epiphany.c (md_begin): Assign literal_prefix_dollar_hex. * config/tc-ip2k.c: ditto * config/tc-mt.c: ditto * config/tc-epiphany.h (LITERAL_PREFIXDOLLAR_HEX): Remove macro definition. * config/tc-ip2k.h: ditto * config/tc-mt.h: ditto --- gas/ChangeLog | 14 ++++++++++++++ gas/config/tc-epiphany.c | 2 ++ gas/config/tc-epiphany.h | 1 - gas/config/tc-ip2k.c | 2 ++ gas/config/tc-ip2k.h | 1 - gas/config/tc-mt.c | 2 ++ gas/config/tc-mt.h | 1 - gas/expr.c | 27 +++++++++++++++++---------- gas/expr.h | 2 ++ 9 files changed, 39 insertions(+), 13 deletions(-) diff --git a/gas/ChangeLog b/gas/ChangeLog index 2230f44..fbfa00b 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,17 @@ +2019-05-21 John Darrington + + * expr.c (literal_prefix_dollar_hex): New variable. + (operand)[case '$']: Use the new variable instead of the old macro. + Also, move this instance of "case '$'" next to the other one, and + enable it only in the complementary proprocessor case. + * expr.h (literal_prefix_dollar_hex): Declare it. + * config/tc-epiphany.c (md_begin): Assign literal_prefix_dollar_hex. + * config/tc-ip2k.c: ditto + * config/tc-mt.c: ditto + * config/tc-epiphany.h (LITERAL_PREFIXDOLLAR_HEX): Remove macro definition. + * config/tc-ip2k.h: ditto + * config/tc-mt.h: ditto + 2019-05-20 Faraz Shahbazker PR 14798 diff --git a/gas/config/tc-epiphany.c b/gas/config/tc-epiphany.c index ca24520..3117918 100644 --- a/gas/config/tc-epiphany.c +++ b/gas/config/tc-epiphany.c @@ -145,6 +145,8 @@ md_begin (void) /* Set the machine type. */ bfd_default_set_arch_mach (stdoutput, bfd_arch_epiphany, bfd_mach_epiphany32); + + literal_prefix_dollar_hex = TRUE; } valueT diff --git a/gas/config/tc-epiphany.h b/gas/config/tc-epiphany.h index ace8f36..695b970 100644 --- a/gas/config/tc-epiphany.h +++ b/gas/config/tc-epiphany.h @@ -37,7 +37,6 @@ /* We don't need to handle .word strangely. */ #define WORKING_DOT_WORD -#define LITERAL_PREFIXDOLLAR_HEX #define LITERAL_PREFIXPERCENT_BIN #define DOUBLESLASH_LINE_COMMENTS diff --git a/gas/config/tc-ip2k.c b/gas/config/tc-ip2k.c index ab00b05..0fcc000 100644 --- a/gas/config/tc-ip2k.c +++ b/gas/config/tc-ip2k.c @@ -160,6 +160,8 @@ md_begin (void) /* Set the machine type. */ bfd_default_set_arch_mach (stdoutput, bfd_arch_ip2k, ip2k_mach); + + literal_prefix_dollar_hex = TRUE; } diff --git a/gas/config/tc-ip2k.h b/gas/config/tc-ip2k.h index 0b38c9dc..ae9510d 100644 --- a/gas/config/tc-ip2k.h +++ b/gas/config/tc-ip2k.h @@ -38,7 +38,6 @@ /* We don't need to handle .word strangely. */ #define WORKING_DOT_WORD -#define LITERAL_PREFIXDOLLAR_HEX #define LITERAL_PREFIXPERCENT_BIN #define DOUBLESLASH_LINE_COMMENTS diff --git a/gas/config/tc-mt.c b/gas/config/tc-mt.c index b93a53e..bd51854 100644 --- a/gas/config/tc-mt.c +++ b/gas/config/tc-mt.c @@ -178,6 +178,8 @@ md_begin (void) /* Set the machine type. */ bfd_default_set_arch_mach (stdoutput, bfd_arch_mt, mt_mach); + + literal_prefix_dollar_hex = TRUE; } void diff --git a/gas/config/tc-mt.h b/gas/config/tc-mt.h index 111dadd..8a96d2c 100644 --- a/gas/config/tc-mt.h +++ b/gas/config/tc-mt.h @@ -41,7 +41,6 @@ /* All mt instructions are multiples of 32 bits. */ #define DWARF2_LINE_MIN_INSN_LENGTH 4 -#define LITERAL_PREFIXDOLLAR_HEX #define LITERAL_PREFIXPERCENT_BIN #define md_apply_fix mt_apply_fix diff --git a/gas/expr.c b/gas/expr.c index 3efde88..16c8934 100644 --- a/gas/expr.c +++ b/gas/expr.c @@ -35,6 +35,8 @@ #define CHAR_BIT 8 #endif +bfd_boolean literal_prefix_dollar_hex = FALSE; + static void floating_constant (expressionS * expressionP); static valueT generic_bignum_to_int32 (void); #ifdef BFD64 @@ -778,15 +780,6 @@ operand (expressionS *expressionP, enum expr_mode mode) expressionP); break; -#ifdef LITERAL_PREFIXDOLLAR_HEX - case '$': - /* $L is the start of a local label, not a hex constant. */ - if (* input_line_pointer == 'L') - goto isname; - integer_constant (16, expressionP); - break; -#endif - #ifdef LITERAL_PREFIXPERCENT_BIN case '%': integer_constant (2, expressionP); @@ -1114,7 +1107,21 @@ operand (expressionS *expressionP, enum expr_mode mode) } break; -#if defined (DOLLAR_DOT) || defined (TC_M68K) +#if !defined (DOLLAR_DOT) && !defined (TC_M68K) + case '$': + if (literal_prefix_dollar_hex) + { + /* $L is the start of a local label, not a hex constant. */ + if (* input_line_pointer == 'L') + goto isname; + integer_constant (16, expressionP); + } + else + { + goto isname; + } + break; +#else case '$': /* '$' is the program counter when in MRI mode, or when DOLLAR_DOT is defined. */ diff --git a/gas/expr.h b/gas/expr.h index a6cb5cf..c7d0681 100644 --- a/gas/expr.h +++ b/gas/expr.h @@ -187,3 +187,5 @@ extern symbolS *expr_build_uconstant (offsetT); extern symbolS *expr_build_dot (void); int resolve_expression (expressionS *); + +extern bfd_boolean literal_prefix_dollar_hex; -- 2.7.4