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upgrade to latest rocket-chip

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This commit is contained in:
Howard Mao
2017-05-25 10:42:19 -07:00
parent a123d82677
commit 062d443863
15 changed files with 112 additions and 100 deletions
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40
tests/syscalls.c
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@@ -5,16 +5,17 @@
#include <stdarg.h>
#include <stdio.h>
#include <limits.h>
#include <sys/signal.h>
#include "util.h"
#define SYS_write 64
#define SYS_exit 93
#define SYS_stats 1234
#undef strcmp
extern volatile uint64_t tohost;
extern volatile uint64_t fromhost;
static uintptr_t handle_frontend_syscall(uintptr_t which, uint64_t arg0, uint64_t arg1, uint64_t arg2)
static uintptr_t syscall(uintptr_t which, uint64_t arg0, uint64_t arg1, uint64_t arg2)
{
volatile uint64_t magic_mem[8] __attribute__((aligned(64)));
magic_mem[0] = which;
@@ -36,7 +37,7 @@ static uintptr_t handle_frontend_syscall(uintptr_t which, uint64_t arg0, uint64_
static uintptr_t counters[NUM_COUNTERS];
static char* counter_names[NUM_COUNTERS];
static int handle_stats(int enable)
void setStats(int enable)
{
int i = 0;
#define READ_CTR(name) do { \
@@ -50,7 +51,6 @@ static int handle_stats(int enable)
READ_CTR(minstret);
#undef READ_CTR
return 0;
}
void __attribute__((noreturn)) tohost_exit(uintptr_t code)
@@ -59,39 +59,19 @@ void __attribute__((noreturn)) tohost_exit(uintptr_t code)
while (1);
}
uintptr_t handle_trap(uintptr_t cause, uintptr_t epc, uintptr_t regs[32])
uintptr_t __attribute__((weak)) handle_trap(uintptr_t cause, uintptr_t epc, uintptr_t regs[32])
{
if (cause != CAUSE_MACHINE_ECALL)
tohost_exit(1337);
else if (regs[17] == SYS_exit)
tohost_exit(regs[10]);
else if (regs[17] == SYS_stats)
regs[10] = handle_stats(regs[10]);
else
regs[10] = handle_frontend_syscall(regs[17], regs[10], regs[11], regs[12]);
return epc + ((*(unsigned short*)epc & 3) == 3 ? 4 : 2);
}
static uintptr_t syscall(uintptr_t num, uintptr_t arg0, uintptr_t arg1, uintptr_t arg2)
{
register uintptr_t a7 asm("a7") = num;
register uintptr_t a0 asm("a0") = arg0;
register uintptr_t a1 asm("a1") = arg1;
register uintptr_t a2 asm("a2") = arg2;
asm volatile ("scall" : "+r"(a0) : "r"(a1), "r"(a2), "r"(a7));
return a0;
tohost_exit(1337);
}
void exit(int code)
{
syscall(SYS_exit, code, 0, 0);
while (1);
tohost_exit(code);
}
void setStats(int enable)
void abort()
{
syscall(SYS_stats, enable, 0, 0);
exit(128 + SIGABRT);
}
void printstr(const char* s)