17 commits

Author	SHA1	Message	Date
Alistair Francis	2b2f91f82c	target/riscv: Add the lowRISC Ibex CPU ... The reset vector is set in the init function don't set it again in realize. Backports commit 36b80ad99f7ea4979a4c5fc6e4072619b405e3b0 from qemu	2020-06-14 22:28:55 -04:00
Alistair Francis	e35d56a146	target/riscv: Remove the deprecated CPUs	2020-06-14 22:15:16 -04:00
Corey Wharton	bc097bd2ae	target/riscv: Add a sifive-e34 cpu type ... The sifive-e34 cpu type is the same as the sifive-e31 with the single precision floating-point extension enabled. Backports commit d784733bf1875c1ba355c69739518f24d56f1260 from qemu	2020-04-30 21:08:10 -04:00
Alistair Francis	dc7cbbe2c1	target/riscv: Remove user version information ... Remove the user version information. This was never used and never publically exposed in a release of QEMU, so let's just remove it. In future to manage versions we can extend the extension properties to specify version. Backports commit c9a73910c34a2147bcf6a3b5194d27abb19c2e54 from qemu	2020-04-30 21:06:51 -04:00
Alistair Francis	fa04e7ea45	target/riscv: Rename the H irqs to VS irqs ... Backports commit 205377f8940898e4c53d1b44350a3d4934a2da72 from qemu	2020-03-22 01:09:04 -04:00
Alistair Francis	0198a09698	target/riscv: Add support for the new execption numbers ... The v0.5 Hypervisor spec add new execption numbers, let's add support for those. Backports commit ab67a1d07a4f6f1b4d577c5c47013273b9804551 from qemu	2020-03-22 01:07:23 -04:00
Alex Bennée	14b401f0bf	target/riscv: rationalise softfloat includes ... We should avoid including the whole of softfloat headers in cpu.h and explicitly include it only where we will be calling softfloat functions. We can use the -types.h and -helpers.h in cpu.h for the few bits that are global. Backports commit 135b03cb9defbd080b8834b30e3d45bed00c6137 from qemu	2019-11-18 21:17:03 -05:00
Joel Sing	14c6ed2cca	RISC-V: Clear load reservations on context switch and SC ... This prevents a load reservation from being placed in one context/process, then being used in another, resulting in an SC succeeding incorrectly and breaking atomics. Backports commit c13b169f1a3dd158d6c75727cdc388f95988db39 from qemu	2019-08-08 17:15:45 -04:00
Alistair Francis	e006204543	target/riscv: Set privledge spec 1.11.0 as default ... Set the priv spec version 1.11.0 as the default and allow selecting it via the command line. Backports commit e3147506b02edcdd7c14ebb41a10fcc3027dcc5c from qemu	2019-08-08 17:05:40 -04:00
Alistair Francis	9241c2c842	target/riscv: Restructure deprecatd CPUs ... Restructure the deprecated CPUs to make it clear in the code that these are depreated. They are already marked as deprecated in qemu-deprecated.texi. There are no functional changes. Backports commit c1fb65e63cfca4506a14b084afd0eca2dc464fe8 from qemu	2019-08-08 17:01:22 -04:00
Michael Clark	6ab36ed89e	target/riscv: Implement riscv_cpu_unassigned_access ... This patch adds support for the riscv_cpu_unassigned_access call and will raise a load or store access fault. Backports commit cbf5827693addaff4e4d2102afedbf078a204eb2 from qemu	2019-08-08 16:48:02 -04:00
Richard Henderson	a672b89e3b	cpu: Introduce cpu_set_cpustate_pointers ... Consolidate some boilerplate from foo_cpu_initfn. Backports commit 7506ed902eb97fe4e2a1dd16766c621d32ecc40d from qemu	2019-06-12 12:27:16 -04:00
Alistair Francis	ea2fee2d4d	target/riscv: Add a base 32 and 64 bit CPU ... At the same time deprecate the ISA string CPUs. It is dobtful anyone specifies the CPUs, but we are keeping them for the Spike machine (which is about to be depreated) so we may as well just mark them as deprecated. Backports commit 8903bf6e6d73d03b988b4a8197132de2ad681ff5 from qemu	2019-05-28 19:11:12 -04:00
Richard Henderson	9c1212f627	target/riscv: Remove spaces from register names ... These extra spaces make the "-d op" dump look weird. Backports commit 7f9188e210aff6522a960d9669a583a3a752ddc0 from qemu	2019-05-28 19:08:50 -04:00
Richard Henderson	e98c731550	target/riscv: Convert to CPUClass::tlb_fill ... Note that env->pc is removed from the qemu_log as that value is garbage. The PC isn't recovered until cpu_restore_state, called from cpu_loop_exit_restore, called from riscv_raise_exception. Backports commit 8a4ca3c10a96be6ed7f023b685b688c4d409bbcb from qemu	2019-05-16 17:24:01 -04:00
Alistair Francis	a9cc62cb23	target/riscv: Remove unused struct ... Backports commit 6b745d4fada5c73db44f596a62e29a5dbe3fc53f from qemu	2019-03-19 23:58:31 -04:00
Lioncash	b6f752970b	target/riscv: Initial introduction of the RISC-V target ... This ports over the RISC-V architecture from Qemu. This is currently a very barebones transition. No code hooking or any fancy stuff. Currently, you can feed it instructions and query the CPU state itself. This also allows choosing whether or not RISC-V 32-bit or RISC-V 64-bit is desirable through Unicorn's interface as well. Extremely basic examples of executing a single instruction have been added to the samples directory to help demonstrate how to use the basic functionality.	2019-03-08 21:46:10 -05:00