From 9a79fa072dec00d41083ed4241522177668b1fc8 Mon Sep 17 00:00:00 2001
From: Andrew Drake <drakedevel@gmail.com>
Date: Thu, 29 Jul 2010 01:36:31 -0700
Subject: [PATCH] [JAEGER] Add support for PUSHA/POPA/emulation for X86/X86_64
 to masm.

---
 js/src/assembler/assembler/MacroAssemblerX86.h    | 10 ++++++++++
 js/src/assembler/assembler/MacroAssemblerX86_64.h | 12 ++++++++++++
 js/src/assembler/assembler/X86Assembler.h         | 18 ++++++++++++++++++
 3 files changed, 40 insertions(+)

diff --git a/js/src/assembler/assembler/MacroAssemblerX86.h b/js/src/assembler/assembler/MacroAssemblerX86.h
index 7a952e8531..5213213c11 100644
--- a/js/src/assembler/assembler/MacroAssemblerX86.h
+++ b/js/src/assembler/assembler/MacroAssemblerX86.h
@@ -183,6 +183,16 @@ public:
         return label;
     }
 
+    void pushAllRegs()
+    {
+        m_assembler.pusha();
+    }
+
+    void popAllRegs()
+    {
+        m_assembler.popa();
+    }
+
     bool supportsFloatingPoint() const { return m_isSSE2Present; }
     // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
     bool supportsFloatingPointTruncate() const { return m_isSSE2Present; }
diff --git a/js/src/assembler/assembler/MacroAssemblerX86_64.h b/js/src/assembler/assembler/MacroAssemblerX86_64.h
index 3be6cf2db9..c48c515cb7 100644
--- a/js/src/assembler/assembler/MacroAssemblerX86_64.h
+++ b/js/src/assembler/assembler/MacroAssemblerX86_64.h
@@ -509,6 +509,18 @@ public:
         return label;
     }
 
+    void pushAllRegs()
+    {
+        for (int i = X86Registers::eax; i <= X86Registers::r15; i++)
+            m_assembler.push_r((RegisterID)i);
+    }
+
+    void popAllRegs()
+    {
+        for (int i = X86Registers::r15; i >= X86Registers::eax; i--)
+            m_assembler.pop_r((RegisterID)i);
+    }
+
     bool supportsFloatingPoint() const { return true; }
     // See comment on MacroAssemblerARMv7::supportsFloatingPointTruncate()
     bool supportsFloatingPointTruncate() const { return true; }
diff --git a/js/src/assembler/assembler/X86Assembler.h b/js/src/assembler/assembler/X86Assembler.h
index faa172a63b..b641326196 100644
--- a/js/src/assembler/assembler/X86Assembler.h
+++ b/js/src/assembler/assembler/X86Assembler.h
@@ -195,6 +195,10 @@ private:
 #endif
         OP_PUSH_EAX                     = 0x50,
         OP_POP_EAX                      = 0x58,
+#if WTF_CPU_X86
+        OP_PUSHA                        = 0x60,
+        OP_POPA                         = 0x61,
+#endif
 #if WTF_CPU_X86_64
         OP_MOVSXD_GvEv                  = 0x63,
 #endif
@@ -2022,6 +2026,20 @@ public:
         m_formatter.prefix(PRE_PREDICT_BRANCH_NOT_TAKEN);
     }
 
+#if WTF_CPU_X86
+    void pusha()
+    {
+        js::JaegerSpew(js::JSpew_Insns, IPFX "pusha\n", MAYBE_PAD);
+        m_formatter.oneByteOp(OP_PUSHA);
+    }
+
+    void popa()
+    {
+        js::JaegerSpew(js::JSpew_Insns, IPFX "popa\n", MAYBE_PAD);
+        m_formatter.oneByteOp(OP_POPA);
+    }
+#endif
+
     // Assembler admin methods:
 
     JmpDst label()
-- 
2.11.4.GIT