github.com/antonblanchard.microwatt
1
0
Fork 0
mirror of https://github.com/antonblanchard/microwatt.git synced 2026-04-15 15:50:24 +00:00
Code Releases Activity

tests/spr_read: Add a check for no-op behaviour of mtspr and mfspr

Browse Source 
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Paul Mackerras
2025-09-17 17:57:08 +10:00
parent 4073aa5ffd
commit 9f9f9046ee
3 changed files with 32 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
tests/spr_read/spr_read.c
View File

@@ -47,6 +47,7 @@ void print_test(char *str)
int main(void)
{
unsigned long tmp;
int fail = 0;
console_init();
@@ -86,7 +87,34 @@ int main(void)
DO_ONE(SPR_PTCR);
DO_ONE(SPR_PVR);
puts(PASS);
/*
* Test no-op behaviour of reserved no-op SPRs,
* and of accesses to undefined SPRs in privileged mode.
*/
print_test("reserved no-op");
__asm__ __volatile__("mtspr 811,%0" : : "r" (7838));
__asm__ __volatile__("li %0,%1; mfspr %0,811" : "=r" (tmp) : "i" (2398));
if (tmp == 2398) {
puts(PASS);
} else {
puts(FAIL);
fail = 1;
}
return 0;
print_test("undefined SPR");
__asm__ __volatile__("mtspr 179,%0" : : "r" (7738));
__asm__ __volatile__("li %0,%1; mfspr %0,179" : "=r" (tmp) : "i" (2498));
if (tmp == 2498) {
puts(PASS);
} else {
puts(FAIL);
fail = 1;
}
if (!fail)
puts(PASS);
else
puts(FAIL);
return fail;
}

BIN
tests/test_spr_read.bin
View File

Binary file not shown.

2
tests/test_spr_read.console_out
View File

@@ -22,4 +22,6 @@ Test SPR_HSPRG1:PASS
Test SPR_PID:PASS
Test SPR_PTCR:PASS
Test SPR_PVR:PASS
Test reserved no-op:PASS
Test undefined SPR:PASS
PASS