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Paul Mackerras
e3f4ccedec
This adds the FSCR and HFSCR registers and implements the associated behaviours of taking a facility unavailable or hypervisor facility unavailable interrupt if certain actions are attempted while the relevant [H]FSCR bit is zero. At present, two FSCR enable bits and three HFSCR enable bits are implemented. FSCR has bits for prefixed instructions and accesses to the TAR register, and HFSCR has those plus a bit that enables access to floating-point registers and instructions. FSCR and HFSCR can be accessed through the debug interface using register addresses 0x2e and 0x2f. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> |
1 month ago | |
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| README | ||
| mw_debug.c | 1 month ago | |
README
mw_debug is the microwatt debugger. It can talk to the simulator using a socket. On an Arty board it uses the FTDI device via liburjtag. ## Building on Fedora ``` dnf install urjtag-devel make ``` If you commonly use it against one target, create an alias as follows: ``` alias mw="$HOME/microwatt/scripts/mw_debug/mw_debug -b jtag" $ mw gpr 0 10 Connected to libftdi driver. Found device ID: 0x0362d093 r0: 0000000000001094 r1: 0000000000001ed0 r2: 000000000000a000 r3: 0000000000000003 r4: 000000000000000d r5: 00000000ffff2ca5 r6: 00000000ffff3eb8 r7: 0000000000000000 r8: 00000000ffff3c33 r9: 0000000000000003 Core: running NIA: 00000000000011d4 MSR: 8000000000000001 ``` ## Building on Debian Debian disables the library in the urjtag package. Instead, build against local urjtag: ``` sudo apt install libftdi-dev git clone https://git.code.sf.net/p/urjtag/git urjtag cd urjtag/urjtag ./autogen.sh make ``` And then uncomment the following line in Makefile to build against that copy ``` CFLAGS += -I urjtag/urjtag/include/ -L urjtag/urjtag/src/.libs/ ``` To run: ``` alias mw="LD_LIBRARY_PATH=$HOME/microwatt/scripts/mw_debug/urjtag/urjtag/src/.libs/ $HOME/microwatt/scripts/mw_debug/mw_debug -b jtag" $ mw Connected to libftdi driver. Found device ID: 0x0362d093 Core: running NIA: 00000000000011b8 MSR: 8000000000000001 ```