04138: gradius4: "SHARC: PC Stack overflow !" doing MASKROM check

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
04138	Crash/Freeze	Critical (emulator)	Always	Dec 14, 2010, 01:55	Mar 20, 2015, 06:49

Tester	NekoEd	View Status	Public	Platform	SDLMAME
Assigned To	peterferrie	Resolution	Fixed	OS	Linux
Status [?]	Resolved			Driver	konami/hornet.cpp
Version	0.140u2	Fixed in Version	0.160	Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	04138: gradius4: "SHARC: PC Stack overflow !" doing MASKROM check
Description	When performing the "MASKROM" check, the game will check four of the ROMs as "OK" before crashing with the message "SHARC: PC Stack overflow !"
Steps To Reproduce	Start the game. Go into the test mode. Select the "MASKROM CHECK". It will get as far as four of the ROMs then bail out. (Alternately, it will stop working. MAME will continue to run, but nothing will happen in regards to the test.)
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	gradius4

Attached Files

No.06914 Tafoid Administrator Dec 14, 2010, 04:11 edited on: Dec 14, 2010, 05:10	I get a crash stating: SHARC: PC Stack overflow ! This happens all the way back to 0.102 (when first was bootable/playable)
No.11521 peterferrie Developer Mar 19, 2015, 03:03 edited on: Mar 19, 2015, 06:37	adsp21062_device is being reset periodically, which re-enables interrupts while still inside an interrupt handler. The resulting cascade of interrupts overflows the stack. However, the proper fix might actually be to reset the stack pointer instead. Proposed fix for 0.160 seems to work.