Bug 932

Summary:	[simulator]
Product:	Libre-SOC's first SoC	Reporter:	Konstantinos Margaritis (markos) <konstantinos>
Component:	Source Code	Assignee:	Luke Kenneth Casson Leighton <lkcl>
Status:	RESOLVED INVALID
Severity:	enhancement	CC:	libre-soc-bugs
Priority:	---
Version:	unspecified
Hardware:	PC
OS:	Linux
NLnet milestone:	---	total budget (EUR) for completion of task and all subtasks:	0
budget (EUR) for this task, excluding subtasks' budget:	0	parent task for budget allocation:
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Description Konstantinos Margaritis (markos) 2022-09-21 17:58:58 BST

sv.lha seems to be loading values incorrectly:

Let's assume the buffer of 16-bit ints


00be 00ba 00de 0083

the following snippet:

setvl   0,0,4,0,1,1
sv.lha  *10, 0(3)

Produces the following results:
reg  8 00000000 00000000 ffffffffffffbabe ffffffffffffbabe ffffffffffffbabe ffffffffffffbabe 00000000 00000000

Which seems incorrect. For one, it should not sign-extend.
Secondly, the order seems wrong, if I am not mistaken the resulting values should be:

0000000000ba00be etc.

Comment 1 Konstantinos Margaritis (markos) 2022-09-21 19:18:00 BST

Please ignore this bug, it's not a bug at all, memory was not copied correctly to the simulator which led to these invalid register contents.