diff options
Diffstat (limited to 'gitlab/issues/target_sparc/host_missing/accel_missing/2340.toml')
| -rw-r--r-- | gitlab/issues/target_sparc/host_missing/accel_missing/2340.toml | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/gitlab/issues/target_sparc/host_missing/accel_missing/2340.toml b/gitlab/issues/target_sparc/host_missing/accel_missing/2340.toml deleted file mode 100644 index 92388988c..000000000 --- a/gitlab/issues/target_sparc/host_missing/accel_missing/2340.toml +++ /dev/null @@ -1,43 +0,0 @@ -id = 2340 -title = "SPARC fp operation INVALID trap hangs on offending instruction." -state = "closed" -created_at = "2024-05-09T18:06:23.731Z" -closed_at = "2024-09-13T14:08:37.007Z" -labels = ["target: sparc"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/2340" -host-os = "FreeBSD" -host-arch = "amd64" -qemu-version = "9.0.0" -guest-os = "SunOS (Solaris)" -guest-arch = "SPARC32 (SS-5)" -description = """An IEEE Invalid Operation exception is typically not enabled in programs - but if it is and an Invalid Operation occurs, a hardware TRAP should be generated which eventually becomes a SIGFPE. However, instead, the program seems to hang on the offending instruction, never moving forward. - -This small C example (you'll need a C compiler) demonstrates the problem, by enabling the INValid floating-pt exception, then executing the FDTOI instruction which causes an INValid trap because the floating-pt source operand is too large for the 32-bit integer result . The SPARC V9 manual specifies that exception should happen, so it's correct to generate the trap. However, the program simply hangs on the FDTOI instruction instead of receiving the signal. - -It could be something in trap emulation that is the underlying culprit here - other possible IEEE traps (such as division-by-zero) might similarly fail? - -`#include <ieeefp.h>` - -`main()` - -`{` - - `double val;` - - `int i;` - - `fpsetmask(FP_X_INV);` - - `val = 1000000000000003.0; /* Number that is too large for int */` - - `printf("val is %f\\n", val);` - - `i = val;` - - `printf("i is %d\\n", i);` - -`}`""" -reproduce = """1. Enable IEEE iNValid operation traps in the TEM in the FSR. -2. Generate an instruction that causes an iNValid trap -3. Instruction hangs, no SIGFPE is generated""" -additional = "n/a" |