* [Qemu-devel] Can anybody help me figure out what has been done about floating point multiply in QEMU?
@ 2011-05-23 17:36 Guan, Qiang
2011-05-23 18:03 ` Nathan Froyd
0 siblings, 1 reply; 2+ messages in thread
From: Guan, Qiang @ 2011-05-23 17:36 UTC (permalink / raw)
To: qemu-devel@nongnu.org
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Hi, Everybody
I am a freshman in QEMU.
I want to figure out what is happening in emulating the floating point calculation in QEMU. I checked the codes in target-i386/translate.c, but I cannot find anything about floating point calculation, I can only find the emulation about integer "mul" or "div". My question is what did QEMU do when they need to emulate a floating point calculation? where are these codes?
Best wishes
Qiang
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] Can anybody help me figure out what has been done about floating point multiply in QEMU?
2011-05-23 17:36 [Qemu-devel] Can anybody help me figure out what has been done about floating point multiply in QEMU? Guan, Qiang
@ 2011-05-23 18:03 ` Nathan Froyd
0 siblings, 0 replies; 2+ messages in thread
From: Nathan Froyd @ 2011-05-23 18:03 UTC (permalink / raw)
To: Guan, Qiang; +Cc: qemu-devel@nongnu.org
On 05/23/2011 01:36 PM, Guan, Qiang wrote:
> I want to figure out what is happening in emulating the floating point
> calculation in QEMU. I checked the codes in target-i386/translate.c, but I
> cannot find anything about floating point calculation, I can only find the
> emulation about integer "mul" or "div". My question is what did QEMU do when
> they need to emulate a floating point calculation? where are these codes?
All the code for manipulating floating-point numbers is in the fpu directory.
The target-i386 code that calls into those functions is in op_helper.c.
HTH,
-Nathan
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2011-05-23 17:36 [Qemu-devel] Can anybody help me figure out what has been done about floating point multiply in QEMU? Guan, Qiang
2011-05-23 18:03 ` Nathan Froyd
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