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-rw-r--r--dyngen-exec.h62
1 files changed, 24 insertions, 38 deletions
diff --git a/dyngen-exec.h b/dyngen-exec.h
index 8ceb230..9f5fcc6 100644
--- a/dyngen-exec.h
+++ b/dyngen-exec.h
@@ -89,21 +89,19 @@ extern int printf(const char *, ...);
#undef NULL
#define NULL 0
-#ifdef __i386__
+#if defined(__i386__)
#define AREG0 "ebp"
#define AREG1 "ebx"
#define AREG2 "esi"
#define AREG3 "edi"
-#endif
-#ifdef __x86_64__
+#elif defined(__x86_64__)
#define AREG0 "r14"
#define AREG1 "r15"
#define AREG2 "r12"
#define AREG3 "r13"
//#define AREG4 "rbp"
//#define AREG5 "rbx"
-#endif
-#ifdef __powerpc__
+#elif defined(__powerpc__)
#define AREG0 "r27"
#define AREG1 "r24"
#define AREG2 "r25"
@@ -121,14 +119,12 @@ extern int printf(const char *, ...);
#endif
#define USE_INT_TO_FLOAT_HELPERS
#define BUGGY_GCC_DIV64
-#endif
-#ifdef __arm__
+#elif defined(__arm__)
#define AREG0 "r7"
#define AREG1 "r4"
#define AREG2 "r5"
#define AREG3 "r6"
-#endif
-#ifdef __mips__
+#elif defined(__mips__)
#define AREG0 "fp"
#define AREG1 "s0"
#define AREG2 "s1"
@@ -138,8 +134,7 @@ extern int printf(const char *, ...);
#define AREG6 "s5"
#define AREG7 "s6"
#define AREG8 "s7"
-#endif
-#ifdef __sparc__
+#elif defined(__sparc__)
#ifdef HOST_SOLARIS
#define AREG0 "g2"
#define AREG1 "g3"
@@ -168,14 +163,12 @@ extern int printf(const char *, ...);
#endif
#endif
#define USE_FP_CONVERT
-#endif
-#ifdef __s390__
+#elif defined(__s390__)
#define AREG0 "r10"
#define AREG1 "r7"
#define AREG2 "r8"
#define AREG3 "r9"
-#endif
-#ifdef __alpha__
+#elif defined(__alpha__)
/* Note $15 is the frame pointer, so anything in op-i386.c that would
require a frame pointer, like alloca, would probably loose. */
#define AREG0 "$15"
@@ -185,19 +178,19 @@ extern int printf(const char *, ...);
#define AREG4 "$12"
#define AREG5 "$13"
#define AREG6 "$14"
-#endif
-#ifdef __mc68000
+#elif defined(__mc68000)
#define AREG0 "%a5"
#define AREG1 "%a4"
#define AREG2 "%d7"
#define AREG3 "%d6"
#define AREG4 "%d5"
-#endif
-#ifdef __ia64__
+#elif defined(__ia64__)
#define AREG0 "r7"
#define AREG1 "r4"
#define AREG2 "r5"
#define AREG3 "r6"
+#else
+#error unsupported CPU
#endif
/* force GCC to generate only one epilog at the end of the function */
@@ -250,44 +243,37 @@ extern int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
#define ASM_NAME(x) #x
#endif
-#ifdef __i386__
+#if defined(__i386__)
#define EXIT_TB() asm volatile ("ret")
#define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)
-#endif
-#ifdef __x86_64__
+#elif defined(__x86_64__)
#define EXIT_TB() asm volatile ("ret")
#define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)
-#endif
-#ifdef __powerpc__
+#elif defined(__powerpc__)
#define EXIT_TB() asm volatile ("blr")
#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
-#endif
-#ifdef __s390__
+#elif defined(__s390__)
#define EXIT_TB() asm volatile ("br %r14")
#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
-#endif
-#ifdef __alpha__
+#elif defined(__alpha__)
#define EXIT_TB() asm volatile ("ret")
-#endif
-#ifdef __ia64__
+#elif defined(__ia64__)
#define EXIT_TB() asm volatile ("br.ret.sptk.many b0;;")
#define GOTO_LABEL_PARAM(n) asm volatile ("br.sptk.many " \
ASM_NAME(__op_gen_label) #n)
-#endif
-#ifdef __sparc__
+#elif defined(__sparc__)
#define EXIT_TB() asm volatile ("jmpl %i0 + 8, %g0; nop")
#define GOTO_LABEL_PARAM(n) asm volatile ("ba " ASM_NAME(__op_gen_label) #n ";nop")
-#endif
-#ifdef __arm__
+#elif defined(__arm__)
#define EXIT_TB() asm volatile ("b exec_loop")
#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
-#endif
-#ifdef __mc68000
+#elif defined(__mc68000)
#define EXIT_TB() asm volatile ("rts")
-#endif
-#ifdef __mips__
+#elif defined(__mips__)
#define EXIT_TB() asm volatile ("jr $ra")
#define GOTO_LABEL_PARAM(n) asm volatile (".set noat; la $1, " ASM_NAME(__op_gen_label) #n "; jr $1; .set at")
+#else
+#error unsupported CPU
#endif
#endif /* !defined(__DYNGEN_EXEC_H__) */
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