diff options
Diffstat (limited to 'sim/mips/interp.c')
| -rw-r--r-- | sim/mips/interp.c | 70 |
1 files changed, 69 insertions, 1 deletions
diff --git a/sim/mips/interp.c b/sim/mips/interp.c index fd93a12..55b089d 100644 --- a/sim/mips/interp.c +++ b/sim/mips/interp.c @@ -50,6 +50,7 @@ code on the hardware. #include "elf-bfd.h" #include "gdb/callback.h" /* GDB simulator callback interface */ #include "gdb/remote-sim.h" /* GDB simulator interface */ +#include "sim-syscall.h" /* Simulator system call support */ char* pr_addr (SIM_ADDR addr); char* pr_uword64 (uword64 addr); @@ -1147,6 +1148,23 @@ Recognized firmware names are: `idt', `pmon', `lsipmon', and `none'.\n", return SIM_RC_OK; } +/* stat structures from MIPS32/64. */ +static const char stat32_map[] = +"st_dev,2:st_ino,2:st_mode,4:st_nlink,2:st_uid,2:st_gid,2" +":st_rdev,2:st_size,4:st_atime,4:st_spare1,4:st_mtime,4:st_spare2,4" +":st_ctime,4:st_spare3,4:st_blksize,4:st_blocks,4:st_spare4,8"; + +static const char stat64_map[] = +"st_dev,2:st_ino,2:st_mode,4:st_nlink,2:st_uid,2:st_gid,2" +":st_rdev,2:st_size,8:st_atime,8:st_spare1,8:st_mtime,8:st_spare2,8" +":st_ctime,8:st_spare3,8:st_blksize,8:st_blocks,8:st_spare4,16"; + +/* Map for calls using the host struct stat. */ +static const CB_TARGET_DEFS_MAP CB_stat_map[] = +{ + { "stat", CB_SYS_stat, 15 }, + { 0, -1, -1 } +}; /* Simple monitor interface (currently setup for the IDT and PMON monitors) */ @@ -1167,7 +1185,7 @@ sim_monitor (SIM_DESC sd, /* The following callback functions are available, however the monitor we are simulating does not make use of them: get_errno, - isatty, lseek, rename, system, time and unlink */ + isatty, rename, system and time. */ switch (reason) { @@ -1241,6 +1259,56 @@ sim_monitor (SIM_DESC sd, break; } + case 13: /* int unlink(const char *path) */ + { + char *path = fetch_str (sd, A0); + V0 = sim_io_unlink (sd, path); + free (path); + break; + } + + case 14: /* int lseek(int fd, int offset, int whence) */ + { + V0 = sim_io_lseek (sd, A0, A1, A2); + break; + } + + case 15: /* int stat(const char *path, struct stat *buf); */ + { + /* As long as the infrastructure doesn't cache anything + related to the stat mapping, this trick gets us a dual + "struct stat"-type mapping in the least error-prone way. */ + host_callback *cb = STATE_CALLBACK (sd); + const char *saved_map = cb->stat_map; + CB_TARGET_DEFS_MAP *saved_syscall_map = cb->syscall_map; + bfd *prog_bfd = STATE_PROG_BFD (sd); + int is_elf32bit = (elf_elfheader(prog_bfd)->e_ident[EI_CLASS] == + ELFCLASS32); + static CB_SYSCALL s; + CB_SYSCALL_INIT (&s); + s.func = 15; + /* Mask out the sign extension part for 64-bit targets because the + MIPS simulator's memory model is still 32-bit. */ + s.arg1 = A0 & 0xFFFFFFFF; + s.arg2 = A1 & 0xFFFFFFFF; + s.p1 = (PTR) sd; + s.p2 = (PTR) cpu; + s.read_mem = sim_syscall_read_mem; + s.write_mem = sim_syscall_write_mem; + + cb->syscall_map = (CB_TARGET_DEFS_MAP *) CB_stat_map; + cb->stat_map = is_elf32bit ? stat32_map : stat64_map; + + if (cb_syscall (cb, &s) != CB_RC_OK) + sim_engine_halt (sd, cpu, NULL, mips_pc_get (cpu), + sim_stopped, SIM_SIGILL); + + V0 = s.result; + cb->stat_map = saved_map; + cb->syscall_map = saved_syscall_map; + break; + } + case 17: /* void _exit() */ { sim_io_eprintf (sd, "sim_monitor(17): _exit(int reason) to be coded\n"); |