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inline asm: Fix 'P' and accept some r<nr> registers

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A 'P' template modifier should avoid adding a '$' to literal
arguments.  Also accept the numbered r8+ registers in an inline
asm clobber list (ignoring them for now).
This commit is contained in:
Michael Matz 2016-07-11 16:28:48 +02:00
parent 10c3514889
commit f9423ff3fa
2 changed files with 13 additions and 5 deletions
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10
i386-asm.c
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@ -1285,7 +1285,8 @@ ST_FUNC void subst_asm_operand(CString *add_str,
r = sv->r;
if ((r & VT_VALMASK) == VT_CONST) {
if (!(r & VT_LVAL) && modifier != 'c' && modifier != 'n')
if (!(r & VT_LVAL) && modifier != 'c' && modifier != 'n' &&
modifier != 'P')
cstr_ccat(add_str, '$');
if (r & VT_SYM) {
cstr_cat(add_str, get_tok_str(sv->sym->v, NULL), -1);
@ -1489,9 +1490,16 @@ ST_FUNC void asm_clobber(uint8_t *clobber_regs, const char *str)
#ifdef TCC_TARGET_X86_64
} else if (reg >= TOK_ASM_rax && reg <= TOK_ASM_rdi) {
reg -= TOK_ASM_rax;
} else if (1 && str[0] == 'r' &&
(((str[1] == '8' || str[1] == '9') && str[2] == 0) ||
(str[1] == '1' && str[2] >= '0' && str[2] <= '5' &&
str[3] == 0))) {
/* Do nothing for now. We can't parse the high registers. */
goto end;
#endif
} else {
tcc_error("invalid clobber register '%s'", str);
}
clobber_regs[reg] = 1;
end:;
}

8
tccasm.c
View File

@ -1043,10 +1043,10 @@ static void subst_asm_operands(ASMOperand *operands, int nb_operands,
}
modifier = 0;
if (*str == 'c' || *str == 'n' ||
*str == 'b' || *str == 'w' ||
*str == 'h' || *str == 'k' || *str == 'q' ||
/* P in GCC would add "@PLT" to symbol refs in PIC mode
Ignore this in TCC. */
*str == 'b' || *str == 'w' || *str == 'h' || *str == 'k' ||
*str == 'q' ||
/* P in GCC would add "@PLT" to symbol refs in PIC mode,
and make literal operands not be decorated with '$'. */
*str == 'P')
modifier = *str++;
index = find_constraint(operands, nb_operands, str, &str);