diff options
Diffstat (limited to 'asm/assemble.c')
| -rw-r--r-- | asm/assemble.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/asm/assemble.c b/asm/assemble.c index 964efb0e..03335eb3 100644 --- a/asm/assemble.c +++ b/asm/assemble.c @@ -405,7 +405,12 @@ static void out(struct out_data *data) nasm_nonfatal("%u-bit signed relocation unsupported by output format %s", (unsigned int)(asize << 3), ofmt->shortname); } else { - nasm_warnf(WARN_ZEXTRELOC, + /*! + *!zext-reloc [on] relocation zero-extended to match output format + *! warns that a relocation has been zero-extended due + *! to limitations in the output format. + */ + nasm_warnf(WARN_ZEXT_RELOC, "%u-bit %s relocation zero-extended from %u bits", (unsigned int)(asize << 3), data->type == OUT_SEGMENT ? "segment" : "unsigned", @@ -555,6 +560,15 @@ static bool jmp_match(int32_t segment, int64_t offset, int bits, if (is_byte && c == 0371 && ins->prefixes[PPS_REP] == P_BND) { /* jmp short (opcode eb) cannot be used with bnd prefix. */ ins->prefixes[PPS_REP] = P_none; + /*! + *!bnd [on] invalid BND prefixes + *! warns about ineffective use of the \c{BND} prefix when the + *! \c{JMP} instruction is converted to the \c{SHORT} form. + *! This should be extremely rare since the short \c{JMP} only + *! is applicable to jumps inside the same module, but if + *! it is legitimate, it may be necessary to use + *! \c{BND JMP DWORD}... + */ nasm_warnf(WARN_BND | ERR_PASS2 , "jmp short does not init bnd regs - bnd prefix dropped."); } @@ -904,6 +918,11 @@ static void bad_hle_warn(const insn * ins, uint8_t hleok) if (!is_class(MEMORY, ins->oprs[0].type)) ww = w_inval; /* HLE requires operand 0 to be memory */ + /*! + *!hle [on] invalid HLE prefixes + *! warns about invalid use of the HLE \c{XACQUIRE} or \c{XRELEASE} + *! prefixes. + */ switch (ww) { case w_none: break; @@ -1398,6 +1417,10 @@ static int64_t calcsize(int32_t segment, int64_t offset, int bits, if (has_prefix(ins, PPS_LOCK, P_LOCK) && lockcheck && (!itemp_has(temp,IF_LOCK) || !is_class(MEMORY, ins->oprs[0].type))) { + /*! + *!lock [on] lock prefix on unlockable instructions + *! warns about \c{LOCK} prefixes on unlockable instructions. + */ nasm_warnf(WARN_LOCK | ERR_PASS2 , "instruction is not lockable"); } |