2004-11-08 Andrew Cagney <cagney@gnu.org>

[deliverable/binutils-gdb.git] / gdb / mips-tdep.h

diff --git a/gdb/mips-tdep.h b/gdb/mips-tdep.h
index 404ec7d76c77f681343ff1991615f470e58c5508..f48799391a9471afdf3eeeedc992b466857d9769 100644 (file)
--- a/gdb/mips-tdep.h
+++ b/gdb/mips-tdep.h
@@ -61,21 +61,33 @@ struct mips_regnum
 };
 extern const struct mips_regnum *mips_regnum (struct gdbarch *gdbarch);
 
+/* Register numbers of various important registers.  Note that some of
+   these values are "real" register numbers, and correspond to the
+   general registers of the machine, and some are "phony" register
+   numbers which are too large to be actual register numbers as far as
+   the user is concerned but do serve to get the desired values when
+   passed to read_register.  */
+
 enum
 {
-  MIPS_ZERO_REGNUM = 0,
+  MIPS_ZERO_REGNUM = 0,                /* Read-only register, always 0.  */
   MIPS_AT_REGNUM = 1,
-  MIPS_V0_REGNUM = 2,
-  MIPS_A0_REGNUM = 4,
-  MIPS_T9_REGNUM = 25,
+  MIPS_V0_REGNUM = 2,          /* Function integer return value.  */
+  MIPS_A0_REGNUM = 4,          /* Loc of first arg during a subr call */
+  MIPS_T9_REGNUM = 25,         /* Contains address of callee in PIC.  */
   MIPS_SP_REGNUM = 29,
   MIPS_RA_REGNUM = 31,
+  MIPS_PS_REGNUM = 32,         /* Contains processor status.  */
   MIPS_EMBED_LO_REGNUM = 33,
   MIPS_EMBED_HI_REGNUM = 34,
   MIPS_EMBED_BADVADDR_REGNUM = 35,
   MIPS_EMBED_CAUSE_REGNUM = 36,
   MIPS_EMBED_PC_REGNUM = 37,
-  MIPS_EMBED_FP0_REGNUM = 38
+  MIPS_EMBED_FP0_REGNUM = 38,
+  MIPS_UNUSED_REGNUM = 73,     /* Never used, FIXME */
+  MIPS_FIRST_EMBED_REGNUM = 74,        /* First CP0 register for embedded use.  */
+  MIPS_PRID_REGNUM = 89,       /* Processor ID.  */
+  MIPS_LAST_EMBED_REGNUM = 89  /* Last one.  */
 };
 
 /* Defined in mips-tdep.c and used in remote-mips.c */