diff options
Diffstat (limited to 'gdb/i386-linux-tdep.c')
| -rw-r--r-- | gdb/i386-linux-tdep.c | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/gdb/i386-linux-tdep.c b/gdb/i386-linux-tdep.c index ecc634fcfb4..748fda05caa 100644 --- a/gdb/i386-linux-tdep.c +++ b/gdb/i386-linux-tdep.c @@ -354,6 +354,24 @@ i386_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1); } +static struct linux_record_tdep i386_linux_record_tdep; + +/* i386_canonicalize_syscall maps from the native i386 Linux set + of syscall ids into a canonical set of syscall ids used by + process record (a mostly trivial mapping, since the canonical + set was originally taken from the i386 set). */ + +static enum gdb_syscall +i386_canonicalize_syscall (int syscall) +{ + enum { i386_syscall_max = 499 }; + + if (syscall <= i386_syscall_max) + return syscall; + else + return -1; +} + /* Parse the arguments of current system call instruction and record the values of the registers and memory that will be changed into "record_arch_list". This instruction is "int 0x80" (Linux @@ -361,24 +379,26 @@ i386_linux_write_pc (struct regcache *regcache, CORE_ADDR pc) Return -1 if something wrong. */ -static struct linux_record_tdep i386_linux_record_tdep; - static int i386_linux_intx80_sysenter_record (struct regcache *regcache) { int ret; - uint32_t tmpu32; + LONGEST syscall_native; + enum gdb_syscall syscall_gdb; + + regcache_raw_read_signed (regcache, I386_EAX_REGNUM, &syscall_native); - regcache_raw_read (regcache, I386_EAX_REGNUM, (gdb_byte *) &tmpu32); + syscall_gdb = i386_canonicalize_syscall (syscall_native); - if (tmpu32 > 499) + if (syscall_gdb < 0) { printf_unfiltered (_("Process record and replay target doesn't " - "support syscall number %u\n"), tmpu32); + "support syscall number %s\n"), + plongest (syscall_native)); return -1; } - ret = record_linux_system_call (tmpu32, regcache, + ret = record_linux_system_call (syscall_gdb, regcache, &i386_linux_record_tdep); if (ret) return ret; |