On 18.08.2023 12:41, Jens Nyberg wrote:
Hi!
I have two questions really:
1, I am thinking of adding the "ltrw" instuction to i386. I see there is
already an ltr instruction so there might be good reason you don't have the w-variant? In
any case how would I add it properly? Would adding a line like this be ok or do I need to
do something else as well?
DEF_ASM_OP1(ltrw, 0x0f00, 3, OPC_MODRM, OPT_EA | OPT_REG)
IIRC there is some mechanism to handle b/w/l suffixes more or less
automatically. You need to see whether you could use that or better
just add a separate instruction.
2. Is there a reason why the .extern keyword is not recognized by the assembler?
According to the gnu as docs it is ignored, so no, I don't see a reason
why tcc couldn't just ignore it too.
-- gr
Thank you!
/ Jens
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