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| author | Sergey Belyashav <sergey.belyashov@gmail.com> | 2020-10-06 11:58:57 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2020-10-06 11:58:57 +0100 |
| commit | 0ae9445d52b99182a541a6da7177665252f37af8 (patch) | |
| tree | dc31ef07ed1dd8b1b7f6dd14d454ed49cdcac79e /gas/config/tc-z80.c | |
| parent | 043f5c63f06e9a376f189df54507666f3d30ed77 (diff) | |
| download | gdb-0ae9445d52b99182a541a6da7177665252f37af8.zip gdb-0ae9445d52b99182a541a6da7177665252f37af8.tar.gz gdb-0ae9445d52b99182a541a6da7177665252f37af8.tar.bz2 | |
A small set of code improvements for the Z80 assembler.
PR 26692
* config/tc-z80.c (md_begin): Ensure that xpressions are empty
before using them.
(unify_indexed): Likewise.
(z80_start_line_hook): Improve hash sign handling when SDCC
compatibility mode enabled.
(md_parse_exp_not_indexed): Improve indirect addressing
detection.
(md_pseudo_table): Accept hd64 as an alias of z810.
Diffstat (limited to 'gas/config/tc-z80.c')
| -rw-r--r-- | gas/config/tc-z80.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/gas/config/tc-z80.c b/gas/config/tc-z80.c index 2e17d00..e5dc877 100644 --- a/gas/config/tc-z80.c +++ b/gas/config/tc-z80.c @@ -492,6 +492,9 @@ md_begin (void) unsigned int i, j, k; char buf[BUFLEN]; + memset (®, 0, sizeof (reg)); + memset (&nul, 0, sizeof (nul)); + if (ins_ok & INS_EZ80) /* if select EZ80 cpu then */ listing_lhs_width = 6; /* use 6 bytes per line in the listing */ @@ -612,9 +615,16 @@ z80_start_line_hook (void) return 1; } break; - case '#': - if (sdcc_compat) - *p = (*skip_space (p + 1) == '(') ? '+' : ' '; + case '#': /* force to use next expression as immediate value in SDCC */ + if (!sdcc_compat) + break; + if (ISSPACE(p[1]) && *skip_space (p + 1) == '(') + { /* ld a,# (expr)... -> ld a,0+(expr)... */ + *p++ = '0'; + *p = '+'; + } + else /* ld a,#(expr)... -> ld a,+(expr); ld a,#expr -> ld a, expr */ + *p = (p[1] == '(') ? '+' : ' '; break; } } @@ -871,6 +881,7 @@ parse_exp_not_indexed (const char *s, expressionS *op) int indir; int make_shift = -1; + memset (op, 0, sizeof (*op)); p = skip_space (s); if (sdcc_compat && (*p == '<' || *p == '>')) { @@ -887,7 +898,11 @@ parse_exp_not_indexed (const char *s, expressionS *op) p = skip_space (p); } - op->X_md = indir = is_indir (p); + if (make_shift == -1) + indir = is_indir (p); + else + indir = 0; + op->X_md = indir; if (indir && (ins_ok & INS_GBZ80)) { /* check for instructions like ld a,(hl+), ld (hl-),a */ p = skip_space (p+1); @@ -950,10 +965,9 @@ unify_indexed (expressionS *op) if (O_subtract == op->X_op) { expressionS minus; + memset (&minus, 0, sizeof (minus)); minus.X_op = O_uminus; - minus.X_add_number = 0; minus.X_add_symbol = op->X_op_symbol; - minus.X_op_symbol = 0; op->X_op_symbol = make_expr_symbol (&minus); op->X_op = O_add; } @@ -966,7 +980,6 @@ unify_indexed (expressionS *op) add.X_op = O_symbol; add.X_add_number = op->X_add_number; add.X_add_symbol = op->X_op_symbol; - add.X_op_symbol = 0; op->X_add_symbol = make_expr_symbol (&add); } else @@ -3444,6 +3457,7 @@ const pseudo_typeS md_pseudo_table[] = { ".r800", set_inss, INS_R800}, { ".set", s_set, 0}, { ".z180", set_inss, INS_Z180}, + { ".hd64", set_inss, INS_Z180}, { ".z80", set_inss, INS_Z80}, { ".z80n", set_inss, INS_Z80N}, { "db" , emit_data, 1}, |