From 88668fa34dab3b110b7d465eecd49669a594fc22 Mon Sep 17 00:00:00 2001
From: Mark Kettenis <kettenis@gnu.org>
Date: Sun, 14 Mar 2004 22:11:25 +0000
Subject: * amd64-linux-nat.c (GETFPREGS_SUPPLIES): Remove macro. (fetch_regs,
 fetch_fpregs, store_regs, store_fpregs): Remove functions.
 (fetch_inferior_registers, store_inferior_registers): Rewrite.

---
 gdb/amd64-linux-nat.c | 116 +++++++++++++++-----------------------------------
 1 file changed, 34 insertions(+), 82 deletions(-)

(limited to 'gdb/amd64-linux-nat.c')

diff --git a/gdb/amd64-linux-nat.c b/gdb/amd64-linux-nat.c
index 63417c40b09..4d94065c49c 100644
--- a/gdb/amd64-linux-nat.c
+++ b/gdb/amd64-linux-nat.c
@@ -96,12 +96,6 @@ static int amd64_linux_gregset32_reg_offset[] =
   -1, -1, -1, -1, -1, -1, -1, -1, -1,
   ORIG_RAX * 8			/* "orig_eax" */
 };
-
-/* Which ptrace request retrieves which registers?
-   These apply to the corresponding SET requests as well.  */
-
-#define GETFPREGS_SUPPLIES(regno) \
-  (FP0_REGNUM <= (regno) && (regno) <= MXCSR_REGNUM)
 
 
 /* Transfering the general-purpose registers between GDB, inferiors
@@ -126,38 +120,6 @@ fill_gregset (elf_gregset_t *gregsetp, int regnum)
   amd64_collect_native_gregset (current_regcache, gregsetp, regnum);
 }
 
-/* Fetch all general-purpose registers from process/thread TID and
-   store their values in GDB's register cache.  */
-
-static void
-fetch_regs (int tid)
-{
-  elf_gregset_t regs;
-
-  if (ptrace (PTRACE_GETREGS, tid, 0, (long) &regs) < 0)
-    perror_with_name ("Couldn't get registers");
-
-  supply_gregset (&regs);
-}
-
-/* Store all valid general-purpose registers in GDB's register cache
-   into the process/thread specified by TID.  */
-
-static void
-store_regs (int tid, int regnum)
-{
-  elf_gregset_t regs;
-
-  if (ptrace (PTRACE_GETREGS, tid, 0, (long) &regs) < 0)
-    perror_with_name ("Couldn't get registers");
-
-  fill_gregset (&regs, regnum);
-
-  if (ptrace (PTRACE_SETREGS, tid, 0, (long) &regs) < 0)
-    perror_with_name ("Couldn't write registers");
-}
-
-
 /* Transfering floating-point registers between GDB, inferiors and cores.  */
 
 /* Fill GDB's register cache with the floating-point and SSE register
@@ -178,37 +140,6 @@ fill_fpregset (elf_fpregset_t *fpregsetp, int regnum)
 {
   amd64_collect_fxsave (current_regcache, regnum, fpregsetp);
 }
-
-/* Fetch all floating-point registers from process/thread TID and store
-   thier values in GDB's register cache.  */
-
-static void
-fetch_fpregs (int tid)
-{
-  elf_fpregset_t fpregs;
-
-  if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
-    perror_with_name ("Couldn't get floating point status");
-
-  supply_fpregset (&fpregs);
-}
-
-/* Store all valid floating-point registers in GDB's register cache
-   into the process/thread specified by TID.  */
-
-static void
-store_fpregs (int tid, int regnum)
-{
-  elf_fpregset_t fpregs;
-
-  if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
-    perror_with_name ("Couldn't get floating point status");
-
-  fill_fpregset (&fpregs, regnum);
-
-  if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0)
-    perror_with_name ("Couldn't write floating point status");
-}
 
 
 /* Transferring arbitrary registers between GDB and inferior.  */
@@ -229,19 +160,25 @@ fetch_inferior_registers (int regnum)
 
   if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
     {
-      fetch_regs (tid);
+      elf_gregset_t regs;
+
+      if (ptrace (PTRACE_GETREGS, tid, 0, (long) &regs) < 0)
+	perror_with_name ("Couldn't get registers");
+
+      amd64_supply_native_gregset (current_regcache, &regs, -1);
       if (regnum != -1)
 	return;
     }
 
-  if (regnum == -1 || GETFPREGS_SUPPLIES (regnum))
+  if (regnum == -1 || regnum >= AMD64_ST0_REGNUM)
     {
-      fetch_fpregs (tid);
-      return;
-    }
+      elf_fpregset_t fpregs;
+
+      if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
+	perror_with_name ("Couldn't get floating point status");
 
-  internal_error (__FILE__, __LINE__,
-		  "Got request for bad register number %d.", regnum);
+      amd64_supply_fxsave (current_regcache, -1, &fpregs);
+    }
 }
 
 /* Store register REGNUM back into the child process.  If REGNUM is
@@ -260,19 +197,34 @@ store_inferior_registers (int regnum)
 
   if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
     {
-      store_regs (tid, regnum);
+      elf_gregset_t regs;
+
+      if (ptrace (PTRACE_GETREGS, tid, 0, (long) &regs) < 0)
+	perror_with_name ("Couldn't get registers");
+
+      amd64_collect_native_gregset (current_regcache, &regs, regnum);
+
+      if (ptrace (PTRACE_SETREGS, tid, 0, (long) &regs) < 0)
+	perror_with_name ("Couldn't write registers");
+
       if (regnum != -1)
 	return;
     }
 
-  if (regnum == -1 || GETFPREGS_SUPPLIES (regnum))
+  if (regnum == -1 || regnum >= AMD64_ST0_REGNUM)
     {
-      store_fpregs (tid, regnum);
+      elf_fpregset_t fpregs;
+
+      if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
+	perror_with_name ("Couldn't get floating point status");
+
+      amd64_collect_fxsave (current_regcache, regnum, &fpregs);
+
+      if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0)
+	perror_with_name ("Couldn't write floating point status");
+
       return;
     }
-
-  internal_error (__FILE__, __LINE__,
-		  "Got request to store bad register number %d.", regnum);
 }
 
 
-- 
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