[PATCH v2 2/4] Use mips_regnum instead of constants for FreeBSD/mips register operations.

[John Baldwin <jhb at FreeBSD dot org>]

gdb/ChangeLog:

	* mips-fbsd-tdep.c (MIPS_PC_REGNUM): Remove.
	(MIPS_FP0_REGNUM): Remove.
	(MIPS_FSR_REGNUM): Remove.
	(mips_fbsd_supply_fpregs): Use mips_regnum.
	(mips_fbsd_supply_gregs): Likewise.
	(mips_fbsd_collect_fpregs): Likewise.
	(mips_fbsd_collect_gregs): Likewise.
---
 gdb/ChangeLog        | 10 ++++++++++
 gdb/mips-fbsd-tdep.c | 29 ++++++++++++++++-------------
 2 files changed, 26 insertions(+), 13 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index eb26e8a7dc..10023d20ae 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,15 @@
 2017-04-25  John Baldwin  <jhb@FreeBSD.org>
 
+	* mips-fbsd-tdep.c (MIPS_PC_REGNUM): Remove.
+	(MIPS_FP0_REGNUM): Remove.
+	(MIPS_FSR_REGNUM): Remove.
+	(mips_fbsd_supply_fpregs): Use mips_regnum.
+	(mips_fbsd_supply_gregs): Likewise.
+	(mips_fbsd_collect_fpregs): Likewise.
+	(mips_fbsd_collect_gregs): Likewise.
+
+2017-04-25  John Baldwin  <jhb@FreeBSD.org>
+
 	* mips-fbsd-nat.c (getregs_supplies): Fix upper bound comparison.
 	(getpfpregs_supplies): New function.
 	(mips_fbsd_fetch_inferior_registers): Remove early exit and use
diff --git a/gdb/mips-fbsd-tdep.c b/gdb/mips-fbsd-tdep.c
index 00fae0ec60..d5bec3c157 100644
--- a/gdb/mips-fbsd-tdep.c
+++ b/gdb/mips-fbsd-tdep.c
@@ -29,11 +29,6 @@
 
 #include "solib-svr4.h"
 
-/* Shorthand for some register numbers used below.  */
-#define MIPS_PC_REGNUM  MIPS_EMBED_PC_REGNUM
-#define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM
-#define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32
-
 /* Core file support. */
 
 /* Number of registers in `struct reg' from <machine/reg.h>.  The
@@ -108,13 +103,16 @@ void
 mips_fbsd_supply_fpregs (struct regcache *regcache, int regnum,
 			 const void *fpregs, size_t regsize)
 {
+  struct gdbarch *gdbarch = get_regcache_arch (regcache);
   const gdb_byte *regs = (const gdb_byte *) fpregs;
-  int i;
+  int i, fp0num, fsrnum;
 
-  for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
+  fp0num = mips_regnum (gdbarch)->fp0;
+  fsrnum = mips_regnum (gdbarch)->fp_control_status;
+  for (i = fp0num; i <= fsrnum; i++)
     if (regnum == i || regnum == -1)
       mips_fbsd_supply_reg (regcache, i,
-			    regs + (i - MIPS_FP0_REGNUM) * regsize, regsize);
+			    regs + (i - fp0num) * regsize, regsize);
 }
 
 /* Supply the general-purpose registers stored in GREGS to REGCACHE.
@@ -125,10 +123,11 @@ void
 mips_fbsd_supply_gregs (struct regcache *regcache, int regnum,
 			const void *gregs, size_t regsize)
 {
+  struct gdbarch *gdbarch = get_regcache_arch (regcache);
   const gdb_byte *regs = (const gdb_byte *) gregs;
   int i;
 
-  for (i = 0; i <= MIPS_PC_REGNUM; i++)
+  for (i = 0; i <= mips_regnum (gdbarch)->pc; i++)
     if (regnum == i || regnum == -1)
       mips_fbsd_supply_reg (regcache, i, regs + i * regsize, regsize);
 }
@@ -141,13 +140,16 @@ void
 mips_fbsd_collect_fpregs (const struct regcache *regcache, int regnum,
 			  void *fpregs, size_t regsize)
 {
+  struct gdbarch *gdbarch = get_regcache_arch (regcache);
   gdb_byte *regs = (gdb_byte *) fpregs;
-  int i;
+  int i, fp0num, fsrnum;
 
-  for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
+  fp0num = mips_regnum (gdbarch)->fp0;
+  fsrnum = mips_regnum (gdbarch)->fp_control_status;
+  for (i = fp0num; i <= fsrnum; i++)
     if (regnum == i || regnum == -1)
       mips_fbsd_collect_reg (regcache, i,
-			     regs + (i - MIPS_FP0_REGNUM) * regsize, regsize);
+			     regs + (i - fp0num) * regsize, regsize);
 }
 
 /* Collect the general-purpose registers from REGCACHE and store them
@@ -158,10 +160,11 @@ void
 mips_fbsd_collect_gregs (const struct regcache *regcache, int regnum,
 			 void *gregs, size_t regsize)
 {
+  struct gdbarch *gdbarch = get_regcache_arch (regcache);
   gdb_byte *regs = (gdb_byte *) gregs;
   int i;
 
-  for (i = 0; i <= MIPS_PC_REGNUM; i++)
+  for (i = 0; i <= mips_regnum (gdbarch)->pc; i++)
     if (regnum == i || regnum == -1)
       mips_fbsd_collect_reg (regcache, i, regs + i * regsize, regsize);
 }
-- 
2.11.0