wiki.qemu.org account access request

I noticed the recent SH4 patches are included in the 9.0.0-rc3 release. Is it appropriate that I request a wiki.qemu.org account so that I may document these changes in https://wiki.qemu.org/ChangeLog/9.0 in a manner that is consistent with how the changes to other CPUs have been documented so

[PATCH] target/sh4: add missing CHECK_NOT_DELAY_SLOT

in the SH-4 ISA manual. Signed-off-by: Zack Buhman --- target/sh4/translate.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/sh4/translate.c b/target/sh4/translate.c index 6643c14dde..ebb6c901bf 100644 --- a/target/sh4/translate.c +++ b/target/sh4/translate.c @@ -523,6 +523,7

[PATCH v2] sh4: mac.w: implement saturation arithmetic logic

macl = 0x7fff qemu saturation mac.w result (before this commit): mach = 0x0001 macl = 0x8000 All of the above also matches the description of MAC.W as documented in cd00147165-sh-4-32-bit-cpu-core-architecture-stmicroelectronics.pdf Signed-off-by: Zack Buhman --- t

Re: [PATCH] sh4: mac.w: implement saturation arithmetic logic

Peter Maydell writes: > On Fri, 5 Apr 2024 at 08:55, Zack Buhman wrote: >> >> The saturation arithmetic logic in helper_macw is not correct. >> >> I tested and verified this behavior on a SH7091, the general pattern >> is a code sequence such as: >> &g

[PATCH] sh4: mac.w: implement saturation arithmetic logic

macl = 0x7fff qemu saturation mac.w result (before this commit): mach = 0x0001 macl = 0x8000 All of the above also matches the description of MAC.W as documented in cd00147165-sh-4-32-bit-cpu-core-architecture-stmicroelectronics.pdf Signed-off-by: Zack Buhman --- t

Re: [PATCH v2] sh4: mac.l: implement saturation arithmetic logic

Signed-off-by: Zack Buhman - Original message - From: "Philippe Mathieu-Daudé" To: Peter Maydell , Zack Buhman Cc: qemu-devel@nongnu.org, Yoshinori Sato Subject: Re: [PATCH v2] sh4: mac.l: implement saturation arithmetic logic Date: Friday, April 05, 2024 1:26 AM Hi Zack,

[PATCH v2] sh4: mac.l: implement saturation arithmetic logic

The saturation arithmetic logic in helper_macl is not correct. I tested and verified this behavior on a SH7091, the general pattern is a code sequence such as: sets mov.l _mach,r2 lds r2,mach mov.l _macl,r2 lds r2,macl mova _n,r0 mov r0,r1

[PATCH] sh4: mac.l: implement saturation arithmetic logic

The saturation arithmetic logic in helper_macl is not correct. I tested and verified this behavior on a SH7091, the general pattern is a code sequence such as: sets mov.l _mach,r2 lds r2,mach mov.l _macl,r2 lds r2,macl mova _n,r0 mov r0,r1

[PATCH] sh4: mac.w: memory accesses are 16-bit words

commit): first macw : macl = 0x5678 * 0xdefg + 0x0 mach = 0x0 second macw: (unaligned longword memory access, SIGBUS) Various SH-4 ISA manuals also confirm that `mac.w` is a 16-bit word memory access, not a 32-bit longword memory access. Signed-off-by: Zack Buhman --- target/sh4