| commit | 5f538f75324ef69d624b5f71ab2c7f4e72a7d744 | |
| author | Helge Deller <deller@gmx.de> | |
| Sun, 7 Oct 2018 20:51:53 +0000 (7 22:51 +0200) | ||
| committer | Richard Henderson <richard.henderson@linaro.org> | |
| Tue, 16 Oct 2018 22:32:22 +0000 (16 15:32 -0700) | ||
| tree | f51b2206a8b8a62467933cacc8cbbd853bc91995 | treesnapshot (tar.gz zip) |
| parent | 09558375a634e17cea6cfbfec883ac2376d2dc7f | commitdiff |
target/hppa: Raise exception 26 on emulated hardware
On PCXS chips (PA7000, pa 1.1a), trap #18 is raised on memory faults,
while all later chips (>= PA7100) generate either trap #26, #27 or #28
(depending on the fault type).
Since the current qemu emulation emulates a B160L machine (with a
PA7300LC PCX-L2 chip, we should raise trap #26 (EXCP_DMAR) instead
of #18 (EXCP_DMP) on access faults by the Linux kernel to page zero.
With the patch we now get the correct output (I tested against real
hardware):
Kernel Fault: Code=26 (Data memory access rights trap)
instead of:
Kernel Fault: Code=18 (Data memory protection/unaligned access trap)
Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20181007205153.GA30270@ls3530.fritz.box>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
On PCXS chips (PA7000, pa 1.1a), trap #18 is raised on memory faults,
while all later chips (>= PA7100) generate either trap #26, #27 or #28
(depending on the fault type).
Since the current qemu emulation emulates a B160L machine (with a
PA7300LC PCX-L2 chip, we should raise trap #26 (EXCP_DMAR) instead
of #18 (EXCP_DMP) on access faults by the Linux kernel to page zero.
With the patch we now get the correct output (I tested against real
hardware):
Kernel Fault: Code=26 (Data memory access rights trap)
instead of:
Kernel Fault: Code=18 (Data memory protection/unaligned access trap)
Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20181007205153.GA30270@ls3530.fritz.box>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
| target/hppa/mem_helper.c | diffblobblamehistory |