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-rw-r--r--sim/mips/interp.c70
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");