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Diffstat (limited to 'src/devices/cpu/mips/mips1.cpp')
-rw-r--r--src/devices/cpu/mips/mips1.cpp235
1 files changed, 5 insertions, 230 deletions
diff --git a/src/devices/cpu/mips/mips1.cpp b/src/devices/cpu/mips/mips1.cpp
index dafef5bea3f..2316da4b25d 100644
--- a/src/devices/cpu/mips/mips1.cpp
+++ b/src/devices/cpu/mips/mips1.cpp
@@ -17,8 +17,6 @@
#include "softfloat3/source/include/softfloat.h"
#define LOG_TLB (1U << 1)
-#define LOG_IOP (1U << 2)
-#define LOG_RISCOS (1U << 3)
//#define VERBOSE (LOG_GENERAL|LOG_TLB)
@@ -237,7 +235,7 @@ mips1_device_base::mips1_device_base(machine_config const &mconfig, device_type
}
r2000_device::r2000_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock, size_t icache_size, size_t dcache_size)
- : mips1_device_base(mconfig, R2000, tag, owner, clock, 0x0100, icache_size, dcache_size, false)
+ : mips1_device_base(mconfig, R2000, tag, owner, clock, 0x0120, icache_size, dcache_size, false)
{
}
@@ -385,24 +383,6 @@ void mips1core_device_base::execute_run()
// debugging
debugger_instruction_hook(m_pc);
- if (VERBOSE & LOG_IOP)
- {
- if ((m_pc & 0x1fffffff) == 0x00012C48 || (m_pc & 0x1fffffff) == 0x0001420C || (m_pc & 0x1fffffff) == 0x0001430C)
- {
- u32 ptr = m_r[5];
- u32 length = m_r[6];
- if (length >= 4096)
- length = 4095;
- while (length)
- {
- load<u8>(ptr, [](char c) { printf("%c", c); });
- ptr++;
- length--;
- }
- fflush(stdout);
- }
- }
-
// fetch instruction
fetch(m_pc, [this](u32 const op)
{
@@ -847,154 +827,6 @@ std::unique_ptr<util::disasm_interface> mips1core_device_base::create_disassembl
void mips1core_device_base::generate_exception(u32 exception, bool refill)
{
- if ((VERBOSE & LOG_RISCOS) && (exception == EXCEPTION_SYSCALL))
- {
- static char const *const sysv_syscalls[] =
- {
- "syscall", "exit", "fork", "read", "write", "open", "close", "wait", "creat", "link",
- "unlink", "execv", "chdir", "time", "mknod", "chmod", "chown", "brk", "stat", "lseek",
- "getpid", "mount", "umount", "setuid", "getuid", "stime", "ptrace", "alarm", "fstat", "pause",
- "utime", "stty", "gtty", "access", "nice", "statfs", "sync", "kill", "fstatfs", "setpgrp",
- nullptr, "dup", "pipe", "times", "profil", "plock", "setgid", "getgid", "signal", "msgsys",
- "sysmips", "acct", "shmsys", "semsys", "ioctl", "uadmin", nullptr, "utssys", nullptr, "execve",
- "umask", "chroot", "ofcntl", "ulimit", nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
- "advfs", "unadvfs", "rmount", "rumount", "rfstart", nullptr, "rdebug", "rfstop", "rfsys", "rmdir",
- "mkdir", "getdents", nullptr, nullptr, "sysfs", "getmsg", "putmsg", "poll", "sigreturn", "accept",
- "bind", "connect", "gethostid", "getpeername", "getsockname", "getsockopt", "listen", "recv", "recvfrom", "recvmsg",
- "select", "send", "sendmsg", "sendto", "sethostid", "setsockopt", "shutdown", "socket", "gethostname", "sethostname",
- "getdomainname","setdomainname","truncate", "ftruncate", "rename", "symlink", "readlink", "lstat", "nfsmount", "nfssvc",
- "getfh", "async_daemon", "old_exportfs", "mmap", "munmap", "getitimer", "setitimer", nullptr, nullptr, nullptr,
- nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
- nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
- "cacheflush", "cachectl", "fchown", "fchmod", "wait3", "mmap", "munmap", "madvise", "getpagesize", "setreuid",
- "setregid", "setpgid", "getgroups", "setgroups", "gettimeofday", "getrusage", "getrlimit", "setrlimit", "exportfs", "fcntl"
- };
-
- static char const *const bsd_syscalls[] =
- {
- "syscall", "exit", "fork", "read", "write", "open", "close", nullptr, "creat", "link",
- "unlink", "execv", "chdir", nullptr, "mknod", "chmod", "chown", "brk", nullptr, "lseek",
- "getpid", "omount", "oumount", nullptr, "getuid", nullptr, "ptrace", nullptr, nullptr, nullptr,
- nullptr, nullptr, nullptr, "access", nullptr, nullptr, "sync", "kill", "stat", nullptr,
- "lstat", "dup", "pipe", nullptr, "profil", nullptr, nullptr, "getgid", nullptr, nullptr,
- nullptr, "acct", nullptr, nullptr, "ioctl", "reboot", nullptr, "symlink", "readlink", "execve",
- "umask", "chroot", "fstat", nullptr, "getpagesize", "mremap", "vfork", nullptr, nullptr, "sbrk",
- "sstk", "mmap", "vadvise", "munmap", "mprotec", "madvise", "vhangup", nullptr, "mincore", "getgroups",
- "setgroups", "getpgrp", "setpgrp", "setitimer", "wait3", "swapon", "getitimer", "gethostname", "sethostname", "getdtablesize",
- "dup2", "getdopt", "fcntl", "select", "setdopt", "fsync", "setpriority", "socket", "connect", "accept",
- "getpriority", "send", "recv", "sigreturn", "bind", "setsockopt", "listen", nullptr, "sigvec", "sigblock",
- "sigsetmask", "sigpause", "sigstack", "recvmsg", "sendmsg", nullptr, "gettimeofday", "getrusage", "getsockopt", nullptr,
- "readv", "writev", "settimeofday", "fchown", "fchmod", "recvfrom", "setreuid", "setregid", "rename", "truncate",
- "ftruncate", "flock", nullptr, "sendto", "shutdown", "socketpair", "mkdir", "rmdir", "utimes", "sigcleanup",
- "adjtime", "getpeername", "gethostid", "sethostid", "getrlimit", "setrlimit", "killpg", nullptr, "setquota", "quota",
- "getsockname", "sysmips", "cacheflush", "cachectl", "debug", nullptr, nullptr, nullptr, "nfssvc", "getdirentries",
- "statfs", "fstatfs", "unmount", "async_daemon", "getfh", "getdomainname","setdomainname",nullptr, "quotactl", "old_exportfs",
- "mount", "hdwconf", "exportfs", "nfsfh_open", "libattach", "libdetach"
- };
-
- static char const *const msg_syscalls[] = { "msgget", "msgctl", "msgrcv", "msgsnd" };
- static char const *const shm_syscalls[] = { "shmat", "shmctl", "shmdt", "shmget" };
- static char const *const sem_syscalls[] = { "semctl", "semget", "semop" };
- static char const *const mips_syscalls[] = { "mipskopt", "mipshwconf", "mipsgetrusage", "mipswait", "mipscacheflush", "mipscachectl" };
-
- unsigned const asid = (m_cop0[COP0_EntryHi] & EH_ASID) >> 6;
- switch (m_r[2])
- {
- case 1000: // indirect
- switch (m_r[4])
- {
- case 1049: // msgsys
- LOGMASKED(LOG_RISCOS, "asid %d syscall msgsys:%s() (%s)\n",
- asid, (m_r[5] < std::size(msg_syscalls)) ? msg_syscalls[m_r[5]] : "unknown", machine().describe_context());
- break;
-
- case 1052: // shmsys
- LOGMASKED(LOG_RISCOS, "asid %d syscall shmsys:%s() (%s)\n",
- asid, (m_r[5] < std::size(shm_syscalls)) ? shm_syscalls[m_r[5]] : "unknown", machine().describe_context());
- break;
-
- case 1053: // semsys
- LOGMASKED(LOG_RISCOS, "asid %d syscall semsys:%s() (%s)\n",
- asid, (m_r[5] < std::size(sem_syscalls)) ? sem_syscalls[m_r[5]] : "unknown", machine().describe_context());
- break;
-
- case 2151: // bsd_sysmips
- switch (m_r[5])
- {
- case 0x100: // mipskopt
- LOGMASKED(LOG_RISCOS, "asid %d syscall bsd_sysmips:mipskopt(\"%s\") (%s)\n",
- asid, debug_string(m_r[6]), machine().describe_context());
- break;
-
- default:
- if ((m_r[5] > 0x100) && (m_r[5] - 0x100) < std::size(mips_syscalls))
- LOGMASKED(LOG_RISCOS, "asid %d syscall bsd_sysmips:%s() (%s)\n",
- asid, mips_syscalls[m_r[5] - 0x100], machine().describe_context());
- else
- LOGMASKED(LOG_RISCOS, "asid %d syscall bsd_sysmips:unknown %d (%s)\n",
- asid, m_r[5], machine().describe_context());
- break;
- }
- break;
-
- default:
- if ((m_r[4] > 2000) && (m_r[4] - 2000 < std::size(bsd_syscalls)) && bsd_syscalls[m_r[4] - 2000])
- LOGMASKED(LOG_RISCOS, "asid %d syscall bsd_%s() (%s)\n",
- asid, bsd_syscalls[m_r[4] - 2000], machine().describe_context());
- else
- LOGMASKED(LOG_RISCOS, "asid %d syscall indirect:unknown %d (%s)\n",
- asid, m_r[4], machine().describe_context());
- break;
- }
- break;
-
- case 1003: // read
- case 1006: // close
- case 1054: // ioctl
- case 1169: // fcntl
- LOGMASKED(LOG_RISCOS, "asid %d syscall %s(%d) (%s)\n",
- asid, sysv_syscalls[m_r[2] - 1000], m_r[4], machine().describe_context());
- break;
-
- case 1004: // write
- if (m_r[4] == 1 || m_r[4] == 2)
- LOGMASKED(LOG_RISCOS, "asid %d syscall %s(%d, \"%s\") (%s)\n",
- asid, sysv_syscalls[m_r[2] - 1000], m_r[4], debug_string(m_r[5], m_r[6]), machine().describe_context());
- else
- LOGMASKED(LOG_RISCOS, "asid %d syscall %s(%d) (%s)\n",
- asid, sysv_syscalls[m_r[2] - 1000], m_r[4], machine().describe_context());
- break;
-
- case 1005: // open
- case 1008: // creat
- case 1009: // link
- case 1010: // unlink
- case 1012: // chdir
- case 1018: // stat
- case 1033: // access
- LOGMASKED(LOG_RISCOS, "asid %d syscall %s(\"%s\") (%s)\n",
- asid, sysv_syscalls[m_r[2] - 1000], debug_string(m_r[4]), machine().describe_context());
- break;
-
- case 1059: // execve
- LOGMASKED(LOG_RISCOS, "asid %d syscall execve(\"%s\", [ %s ], [ %s ]) (%s)\n",
- asid, debug_string(m_r[4]), debug_string_array(m_r[5]), debug_string_array(m_r[6]), machine().describe_context());
- break;
-
- case 1060: // umask
- LOGMASKED(LOG_RISCOS, "asid %d syscall umask(%#o) (%s)\n",
- asid, m_r[4] & 0777, machine().describe_context());
- break;
-
- default:
- if ((m_r[2] > 1000) && (m_r[2] - 1000 < std::size(sysv_syscalls)) && sysv_syscalls[m_r[2] - 1000])
- LOGMASKED(LOG_RISCOS, "asid %d syscall %s() (%s)\n", asid, sysv_syscalls[m_r[2] - 1000], machine().describe_context());
- else
- LOGMASKED(LOG_RISCOS, "asid %d syscall unknown %d (%s)\n", asid, m_r[2], machine().describe_context());
- break;
- }
- }
-
// set the exception PC
m_cop0[COP0_EPC] = m_pc;
@@ -1009,16 +841,17 @@ void mips1core_device_base::generate_exception(u32 exception, bool refill)
}
m_branch_state = EXCEPTION;
- // shift the exception bits
- SR = (SR & ~SR_KUIE) | ((SR << 2) & SR_KUIEop);
-
if (refill)
m_pc = (SR & SR_BEV) ? 0xbfc00100 : 0x80000000;
else
m_pc = (SR & SR_BEV) ? 0xbfc00180 : 0x80000080;
+ // hook exception in caller context enabling debugger access to memory parameters
debugger_exception_hook(exception);
+ // shift the exception bits
+ SR = (SR & ~SR_KUIE) | ((SR << 2) & SR_KUIEop);
+
if (SR & SR_KUp)
debugger_privilege_hook();
}
@@ -1490,64 +1323,6 @@ void mips1core_device_base::fetch(u32 address, std::function<void(u32)> &&apply)
apply(data);
}
-std::string mips1core_device_base::debug_string(u32 string_pointer, unsigned const limit)
-{
- auto const suppressor(machine().disable_side_effects());
-
- bool done = false;
- bool mapped = false;
- std::string result("");
-
- while (!done)
- {
- done = true;
- load<u8>(string_pointer++, [limit, &done, &mapped, &result](u8 byte)
- {
- mapped = true;
- if (byte != 0)
- {
- result += byte;
-
- done = result.length() == limit;
- }
- });
- }
-
- if (!mapped)
- result.assign("[unmapped]");
-
- return result;
-}
-
-std::string mips1core_device_base::debug_string_array(u32 array_pointer)
-{
- auto const suppressor(machine().disable_side_effects());
-
- bool done = false;
- std::string result("");
-
- while (!done)
- {
- done = true;
- load<u32>(array_pointer, [this, &done, &result](u32 string_pointer)
- {
- if (string_pointer != 0)
- {
- if (!result.empty())
- result += ", ";
-
- result += '\"' + debug_string(string_pointer) + '\"';
-
- done = false;
- }
- });
-
- array_pointer += 4;
- }
-
- return result;
-}
-
void mips1_device_base::device_start()
{
mips1core_device_base::device_start();