riscv-pk

Commit Graph

Author	SHA1	Message	Date
Saleem Abdulrasool	2f3e6f5303	pk: correct the handling of SYS_getcwd (#250 ) `SYS_getcwd` is different from `getcwd` in that the return value is < 0 on failure otherwise it is the length of the string. The proxy kernel was treating 0 as success and all other values as error. As a result, we would never return a valid value for `getcwd`. The following program now executes properly with the Proxy Kernel: ```c #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <linux/limits.h> int main(int argc, char **argv) { unsigned char buffer[PATH_MAX + 1] = {0}; if (getcwd(buffer, PATH_MAX)) printf("cwd: %s\n", buffer); return EXIT_SUCCESS; } ```	5 years ago
Andrew Waterman	b9eba474fb	pk: support >2 GiB of user memory for RV64 Previously, the pk would always run from virtual address MEM_START. Instead, remap it into the negative virtual addresses, allowing user processes to expand beyond MEM_START.	5 years ago
Andrew Waterman	0b5ef9cf75	Add some missing syscall stubs	5 years ago
Andrew Waterman	817e7d0dfe	pk: only access user memory through explicit accessors Enforced with sstatus.SUM.	5 years ago
huaixv	b7f64fe558	Add `statx` syscall (#234 )	5 years ago
Marcus Comstedt	29539c9aca	Remove use of copy_stat() from sys_fstat and sys_lstat (#228 )	5 years ago
Marcus Comstedt	c32ca41c81	Remove use of copy_stat() from sys_fstatat The system call should return the stat struct in kernel format, not libc format.	5 years ago
davidmetz	efc32d0cab	Fix CPI calcualtion for -s option (#192 ) This attempt at rounding leads to wrong results, for example: 314689951 cycles 314690101 instructions 0.90 CPI With my change results in: 314689951 cycles 314690101 instructions 0.99 CPI I think this was supposed to be part of rounding behaviour but it doesn't work if only the final digit does it and there is no carry... Instead I changed it to truncate after the second digit	6 years ago
Luís Marques	43969b149e	Implement dup3 syscall (#162 )	7 years ago
Luís Marques	99d6d0a93f	Make performance counters always 64 bits wide (#178 ) This prevents the counters from easily overflowing for a 32-bit pk.	7 years ago
Luís Marques	a1c125dde7	Stub out madvise syscall (#145 )	7 years ago
Luís Marques	31e531b2b4	Implement clock_gettime syscall (#139 )	7 years ago
Andrew Waterman	e5846a2bc7	Bump the Linux version PK claims to support This makes it more compatible with recent glibc.	8 years ago
Andrew Waterman	fb4e31229f	Stub out sys_prlimit64	9 years ago
Andrew Waterman	f6b2274af4	avoid non-standard predefined macros	9 years ago
Andrew Waterman	8039c6cacb	For RV32, mmap offset is in 4 KiB increments	10 years ago
Andrew Waterman	558039d546	Add syscall stubs to get through libpthread initializers	10 years ago
Andrew Waterman	0a7862c79f	when -s is passed, print time, instret, cycle, and CPI	10 years ago
Andrew Waterman	d88671efdf	Remove uarch counters We'll re-add support for the generic performance counter facility once it exists.	10 years ago
Andrew Waterman	7389e46cd0	Move DRAM to high addresses	10 years ago
Garret Kelly	1baf122e28	pk: proxy chdir syscall to fesvr	10 years ago
Andrew Waterman	ee00503ebe	Don't assume existence of uarch counters	10 years ago
Andrew Waterman	b94c7a4b07	Refactor pk, bbl, machine into separate libraries Yuck.	10 years ago
Andrew Waterman	80447e5711	Disentangle PK and BBL a bit	10 years ago
Andrew Waterman	7016bac5df	Fix struct stat size mismatch for RV32	10 years ago
Andrew Waterman	31ad71b8a4	Remove incorrect code supporting ELF32 on RV64 and vice-versa This is technically possible by running an RV32 supervisor on an RV64 machine, but the M-mode and S-mode code would need to be compiled and linked separately.	10 years ago
Colin Schmidt	676c953b79	add renameat syscall	10 years ago
Andrew Waterman	4a37572381	Add ftruncate syscall	11 years ago
Andrew Waterman	cc3a93bf30	Stub out a few system calls	11 years ago
Andrew Waterman	87683e74f5	Split pk functionality into pk and bbl pk is now an AEE only (i.e. it can only execute user programs). bbl is now an SEE only (i.e. it can only host kernels).	11 years ago
Andrew Waterman	6517fe26a2	Update to new privileged spec	11 years ago
Andrew Waterman	5c86450130	work in progress on new supervisor spec	11 years ago
Andrew Waterman	d05359c14e	return -ENOSYS for ioctl, rather than aborting	11 years ago
Andrew Waterman	0a81fd3a93	Support linkat, unlinkat, mkdirat syscalls Also, old-style syscalls e.g. open are now implemented with e.g. openat.	11 years ago
Andrew Waterman	fda0d85ae4	Don't rely on the C library	12 years ago
Andrew Waterman	1d953bf6fc	Support glibc 2.20 programs	12 years ago
Christopher Celio	024053cd98	Fix uarch counter printout type.	12 years ago
Christopher Celio	5eba64df88	Added "-c" option to track uarch counter info.	12 years ago
Christopher Celio	7b6a968c83	Changes to allow spike & RTL behavior to better match each other. - EI turned off on sys_exit. - IM/IP cleared on start. - badvaddr only saved to tf on page faults.	12 years ago
Colin Schmidt	8fc3a35ba5	Allow mmap to map new segments larger than 1 page on top of existing mappings and add mprotect syscall	12 years ago
Colin Schmidt	e50dc18f5d	Add several syscalls, and move syscall header file from newlib syscalls added (openat, access, accessat, faccessat, etc.)	12 years ago
Andrew Waterman	f1f8dbbed0	Abandon MIPS convention for indicating syscall errors in register a3	12 years ago
Andrew Waterman	dc49b2b13a	Add times syscall	12 years ago
Andrew Waterman	f62e692e72	Update to new privileged ISA	13 years ago
Andrew Waterman	6c0a4423c5	Add gettimeofday syscall	13 years ago
Andrew Waterman	00f7299824	Add some syscalls	13 years ago
Andrew Waterman	80a4afcb47	Remove extraneous printk	13 years ago
Andrew Waterman	cc72987e65	Support Linux ABI and (optionally) virtual memory	13 years ago
Andrew Waterman	accebe9e63	add BSD license	13 years ago
Andrew Waterman	8717517e04	Synced up PK with supervisor changes/asm syntax You must upgrade to the latest compiler and ISA simulator to build and run this version of the PK.	15 years ago

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58 Commits (4ae5a8876fc2c31776b1777405ab14f764cc0f36)