diff --git a/src/Makefile b/src/Makefile
index 903beedd..532da6e9 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -248,9 +248,6 @@ ifneq (,$(findstring LJ_TARGET_PS3 1,$(TARGET_TESTARCH)))
   TARGET_XCFLAGS+= -DLUAJIT_USE_SYSMALLOC
   TARGET_XLIBS+= -lpthread
 endif
-ifneq (,$(findstring LJ_NO_UNWIND 1,$(TARGET_TESTARCH)))
-  TARGET_ARCH+= -DLUAJIT_NO_UNWIND
-endif
 
 TARGET_XCFLAGS+= $(CCOPT_$(TARGET_LJARCH))
 TARGET_ARCH+= $(patsubst %,-DLUAJIT_TARGET=LUAJIT_ARCH_%,$(TARGET_LJARCH))
@@ -405,6 +402,10 @@ ifeq (,$(findstring LJ_ABI_SOFTFP 1,$(TARGET_TESTARCH)))
 else
   TARGET_ARCH+= -DLJ_ABI_SOFTFP=1
 endif
+ifneq (,$(findstring LJ_NO_UNWIND 1,$(TARGET_TESTARCH)))
+  DASM_AFLAGS+= -D NO_UNWIND
+  TARGET_ARCH+= -DLUAJIT_NO_UNWIND
+endif
 DASM_AFLAGS+= -D VER=$(subst LJ_ARCH_VERSION_,,$(filter LJ_ARCH_VERSION_%,$(subst LJ_ARCH_VERSION ,LJ_ARCH_VERSION_,$(TARGET_TESTARCH))))
 ifeq (Windows,$(TARGET_SYS))
   DASM_AFLAGS+= -D WIN
diff --git a/src/lj_arch.h b/src/lj_arch.h
index 442ba4fc..96e9a99e 100644
--- a/src/lj_arch.h
+++ b/src/lj_arch.h
@@ -489,7 +489,7 @@
 #define LUAJIT_NO_EXP2
 #endif
 
-#if defined(LUAJIT_NO_UNWIND) || defined(__symbian__) || LJ_TARGET_IOS || LJ_TARGET_PS3
+#if defined(LUAJIT_NO_UNWIND) || defined(__symbian__) || LJ_TARGET_IOS || LJ_TARGET_PS3 || LJ_TARGET_PS4
 #define LJ_NO_UNWIND		1
 #endif
 
diff --git a/src/lj_err.c b/src/lj_err.c
index 26210f54..2e20c2c0 100644
--- a/src/lj_err.c
+++ b/src/lj_err.c
@@ -58,10 +58,10 @@
 ** EXT cannot be enabled on WIN32 since system exceptions use code-driven SEH.
 ** EXT is mandatory on WIN64 since the calling convention has an abundance
 ** of callee-saved registers (rbx, rbp, rsi, rdi, r12-r15, xmm6-xmm15).
-** EXT is mandatory on POSIX/x64 since the interpreter doesn't save r12/r13.
+** The POSIX/x64 interpreter only saves r12/r13 for INT (e.g. PS4).
 */
 
-#if defined(__GNUC__) && (LJ_TARGET_X64 || defined(LUAJIT_UNWIND_EXTERNAL))
+#if defined(__GNUC__) && (LJ_TARGET_X64 || defined(LUAJIT_UNWIND_EXTERNAL)) && !LJ_NO_UNWIND
 #define LJ_UNWIND_EXT	1
 #elif LJ_TARGET_X64 && LJ_TARGET_WINDOWS
 #define LJ_UNWIND_EXT	1
diff --git a/src/lj_frame.h b/src/lj_frame.h
index 517f4684..a86c36be 100644
--- a/src/lj_frame.h
+++ b/src/lj_frame.h
@@ -158,7 +158,11 @@ enum { LJ_CONT_TAILCALL, LJ_CONT_FFI_CALLBACK };  /* Special continuations. */
 #define CFRAME_OFS_NRES		(4*4)
 #define CFRAME_OFS_MULTRES	(1*4)
 #endif
+#if LJ_NO_UNWIND
+#define CFRAME_SIZE		(12*8)
+#else
 #define CFRAME_SIZE		(10*8)
+#endif
 #define CFRAME_SIZE_JIT		(CFRAME_SIZE + 16)
 #define CFRAME_SHIFT_MULTRES	0
 #endif
diff --git a/src/ps4build.bat b/src/ps4build.bat
index 42fc9a64..337a44fa 100644
--- a/src/ps4build.bat
+++ b/src/ps4build.bat
@@ -27,11 +27,11 @@ if exist minilua.exe.manifest^
 @minilua
 @if not errorlevel 8 goto :FAIL
 
-@set DASMFLAGS=-D P64
+@set DASMFLAGS=-D P64 -D NO_UNWIND
 minilua %DASM% -LN %DASMFLAGS% -o host\buildvm_arch.h vm_x86.dasc
 @if errorlevel 1 goto :BAD
 
-%LJCOMPILE% /I "." /I %DASMDIR% -DLUAJIT_TARGET=LUAJIT_ARCH_X64 -DLUAJIT_OS=LUAJIT_OS_OTHER -DLUAJIT_DISABLE_JIT -DLUAJIT_DISABLE_FFI host\buildvm*.c
+%LJCOMPILE% /I "." /I %DASMDIR% -DLUAJIT_TARGET=LUAJIT_ARCH_X64 -DLUAJIT_OS=LUAJIT_OS_OTHER -DLUAJIT_DISABLE_JIT -DLUAJIT_DISABLE_FFI -DLUAJIT_NO_UNWIND host\buildvm*.c
 @if errorlevel 1 goto :BAD
 %LJLINK% /out:buildvm.exe buildvm*.obj
 @if errorlevel 1 goto :BAD
diff --git a/src/vm_x64.dasc b/src/vm_x64.dasc
index f99525b5..2b1c8d2d 100644
--- a/src/vm_x64.dasc
+++ b/src/vm_x64.dasc
@@ -143,6 +143,9 @@
 |.define CFRAME_SPACE,	aword*5			// Delta for rsp (see <--).
 |.macro saveregs_
 |  push rbx; push r15; push r14
+|.if NO_UNWIND
+|  push r13; push r12
+|.endif
 |  sub rsp, CFRAME_SPACE
 |.endmacro
 |.macro saveregs
@@ -150,15 +153,28 @@
 |.endmacro
 |.macro restoreregs
 |  add rsp, CFRAME_SPACE
+|.if NO_UNWIND
+|  pop r12; pop r13
+|.endif
 |  pop r14; pop r15; pop rbx; pop rbp
 |.endmacro
 |
 |//----- 16 byte aligned,
+|.if NO_UNWIND
+|.define SAVE_RET,	aword [rsp+aword*11]	//<-- rsp entering interpreter.
+|.define SAVE_R4,	aword [rsp+aword*10]
+|.define SAVE_R3,	aword [rsp+aword*9]
+|.define SAVE_R2,	aword [rsp+aword*8]
+|.define SAVE_R1,	aword [rsp+aword*7]
+|.define SAVE_RU2,	aword [rsp+aword*6]
+|.define SAVE_RU1,	aword [rsp+aword*5]	//<-- rsp after register saves.
+|.else
 |.define SAVE_RET,	aword [rsp+aword*9]	//<-- rsp entering interpreter.
 |.define SAVE_R4,	aword [rsp+aword*8]
 |.define SAVE_R3,	aword [rsp+aword*7]
 |.define SAVE_R2,	aword [rsp+aword*6]
 |.define SAVE_R1,	aword [rsp+aword*5]	//<-- rsp after register saves.
+|.endif
 |.define SAVE_CFRAME,	aword [rsp+aword*4]
 |.define SAVE_PC,	aword [rsp+aword*3]
 |.define SAVE_L,	aword [rsp+aword*2]
@@ -4682,6 +4698,10 @@ static void emit_asm_debug(BuildCtx *ctx)
 	"\t.byte 0x83\n\t.uleb128 0x3\n"	/* offset rbx */
 	"\t.byte 0x8f\n\t.uleb128 0x4\n"	/* offset r15 */
 	"\t.byte 0x8e\n\t.uleb128 0x5\n"	/* offset r14 */
+#if LJ_NO_UNWIND
+	"\t.byte 0x8d\n\t.uleb128 0x6\n"	/* offset r13 */
+	"\t.byte 0x8c\n\t.uleb128 0x7\n"	/* offset r12 */
+#endif
 	"\t.align 8\n"
 	".LEFDE0:\n\n", fcofs, CFRAME_SIZE);
 #if LJ_HASFFI
@@ -4699,6 +4719,7 @@ static void emit_asm_debug(BuildCtx *ctx)
 	"\t.align 8\n"
 	".LEFDE1:\n\n", (int)ctx->codesz - fcofs);
 #endif
+#if !LJ_NO_UNWIND
 #if (defined(__sun__) && defined(__svr4__))
     fprintf(ctx->fp, "\t.section .eh_frame,\"a\",@unwind\n");
 #else
@@ -4768,8 +4789,10 @@ static void emit_asm_debug(BuildCtx *ctx)
 	"\t.byte 0x83\n\t.uleb128 0x3\n"	/* offset rbx */
 	"\t.align 8\n"
 	".LEFDE3:\n\n", (int)ctx->codesz - fcofs);
+#endif
 #endif
     break;
+#if !LJ_NO_UNWIND
   /* Mental note: never let Apple design an assembler.
   ** Or a linker. Or a plastic case. But I digress.
   */
@@ -4864,6 +4887,7 @@ static void emit_asm_debug(BuildCtx *ctx)
     fprintf(ctx->fp, ".subsections_via_symbols\n");
     }
     break;
+#endif
   default:  /* Difficult for other modes. */
     break;
   }
diff --git a/src/vm_x86.dasc b/src/vm_x86.dasc
index 58266196..f31e595b 100644
--- a/src/vm_x86.dasc
+++ b/src/vm_x86.dasc
@@ -222,6 +222,9 @@
 |.define CFRAME_SPACE,	aword*5			// Delta for rsp (see <--).
 |.macro saveregs_
 |  push rbx; push r15; push r14
+|.if NO_UNWIND
+|  push r13; push r12
+|.endif
 |  sub rsp, CFRAME_SPACE
 |.endmacro
 |.macro saveregs
@@ -229,15 +232,28 @@
 |.endmacro
 |.macro restoreregs
 |  add rsp, CFRAME_SPACE
+|.if NO_UNWIND
+|  pop r12; pop r13
+|.endif
 |  pop r14; pop r15; pop rbx; pop rbp
 |.endmacro
 |
 |//----- 16 byte aligned,
+|.if NO_UNWIND
+|.define SAVE_RET,	aword [rsp+aword*11]	//<-- rsp entering interpreter.
+|.define SAVE_R4,	aword [rsp+aword*10]
+|.define SAVE_R3,	aword [rsp+aword*9]
+|.define SAVE_R2,	aword [rsp+aword*8]
+|.define SAVE_R1,	aword [rsp+aword*7]
+|.define SAVE_RU2,	aword [rsp+aword*6]
+|.define SAVE_RU1,	aword [rsp+aword*5]	//<-- rsp after register saves.
+|.else
 |.define SAVE_RET,	aword [rsp+aword*9]	//<-- rsp entering interpreter.
 |.define SAVE_R4,	aword [rsp+aword*8]
 |.define SAVE_R3,	aword [rsp+aword*7]
 |.define SAVE_R2,	aword [rsp+aword*6]
 |.define SAVE_R1,	aword [rsp+aword*5]	//<-- rsp after register saves.
+|.endif
 |.define SAVE_CFRAME,	aword [rsp+aword*4]
 |.define SAVE_PC,	dword [rsp+dword*7]
 |.define SAVE_L,	dword [rsp+dword*6]
@@ -5422,6 +5438,10 @@ static void emit_asm_debug(BuildCtx *ctx)
 	"\t.byte 0x83\n\t.uleb128 0x3\n"	/* offset rbx */
 	"\t.byte 0x8f\n\t.uleb128 0x4\n"	/* offset r15 */
 	"\t.byte 0x8e\n\t.uleb128 0x5\n"	/* offset r14 */
+#if LJ_NO_UNWIND
+	"\t.byte 0x8d\n\t.uleb128 0x6\n"	/* offset r13 */
+	"\t.byte 0x8c\n\t.uleb128 0x7\n"	/* offset r12 */
+#endif
 #else
 	"\t.long .Lbegin\n"
 	"\t.long %d\n"
@@ -5457,6 +5477,7 @@ static void emit_asm_debug(BuildCtx *ctx)
 	"\t.align " SZPTR "\n"
 	".LEFDE1:\n\n", (int)ctx->codesz - fcofs);
 #endif
+#if !LJ_NO_UNWIND
 #if (defined(__sun__) && defined(__svr4__))
 #if LJ_64
     fprintf(ctx->fp, "\t.section .eh_frame,\"a\",@unwind\n");
@@ -5544,8 +5565,10 @@ static void emit_asm_debug(BuildCtx *ctx)
 #endif
 	"\t.align " SZPTR "\n"
 	".LEFDE3:\n\n", (int)ctx->codesz - fcofs);
+#endif
 #endif
     break;
+#if !LJ_NO_UNWIND
   /* Mental note: never let Apple design an assembler.
   ** Or a linker. Or a plastic case. But I digress.
   */
@@ -5679,6 +5702,7 @@ static void emit_asm_debug(BuildCtx *ctx)
     fprintf(ctx->fp, ".subsections_via_symbols\n");
     }
     break;
+#endif
   default:  /* Difficult for other modes. */
     break;
   }