702 – inline assembler: "SMSW r32" fails to compile

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Issue 702 - inline assembler: "SMSW r32" fails to compile

Summary: inline assembler: "SMSW r32" fails to compile

Status:	RESOLVED FIXED
Alias:	None
Product:	D
Classification:	Unclassified
Component:	dmd (show other issues)
Version:	D1 (retired)
Hardware:	x86 Linux
Importance :	P2 normal
Assignee:	Walter Bright
URL:
Keywords:	rejects-valid
Depends on:
Blocks:

See Also:
Reported:	2006年12月21日 03:08 UTC by Thomas Kühne
Modified:	2014年02月15日 13:21 UTC (History)
CC List:	0 users

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Description Thomas Kühne 2006年12月21日 03:08:34 UTC

The following code fails to compile with the message
"bad type/size of operands 'smsw'":
asm{ SMSW EAX; }
SMSW r32 is valid i386 assembler:
IA-32 Intel® Architecture Software Developer’s
Manual Volume 2B: Instruction Set Reference, N-Z
4-274 Vol. 2B
Opcode:
0F 01 /4
Instruction:
SMSW r32/m16
Description:
Store machine status word in low-order 16 bits of r32/m16; high-order 16 bits of r32 are undefined.
testcase:
http://dstress.kuehne.cn/run/a/asm_smsw_02_A.d

Comment 1 Walter Bright 2007年01月03日 22:05:59 UTC

Fixed DMD 1.00