/*
* dyngen helpers
- *
+ *
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
*/
int __op_param1, __op_param2, __op_param3;
-int __op_gen_label1, __op_gen_label2, __op_gen_label3;
-int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
-
-#ifdef __i386__
-static inline void flush_icache_range(unsigned long start, unsigned long stop)
-{
-}
-#endif
-
-#ifdef __x86_64__
-static inline void flush_icache_range(unsigned long start, unsigned long stop)
-{
-}
+#if defined(__sparc__) || defined(__arm__)
+ void __op_gen_label1(){}
+ void __op_gen_label2(){}
+ void __op_gen_label3(){}
+#else
+ int __op_gen_label1, __op_gen_label2, __op_gen_label3;
#endif
+int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
-#ifdef __s390__
+#if defined(__i386__) || defined(__x86_64__) || defined(__s390__)
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
}
-#endif
-
-#ifdef __ia64__
+#elif defined(__ia64__)
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
while (start < stop) {
}
asm volatile (";;sync.i;;srlz.i;;");
}
-#endif
-
-#ifdef __powerpc__
+#elif defined(__powerpc__)
#define MIN_CACHE_LINE_SIZE 8 /* conservative value */
{
unsigned long p;
- p = start & ~(MIN_CACHE_LINE_SIZE - 1);
+ start &= ~(MIN_CACHE_LINE_SIZE - 1);
stop = (stop + MIN_CACHE_LINE_SIZE - 1) & ~(MIN_CACHE_LINE_SIZE - 1);
-
+
for (p = start; p < stop; p += MIN_CACHE_LINE_SIZE) {
asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");
}
asm volatile ("sync" : : : "memory");
asm volatile ("isync" : : : "memory");
}
-#endif
-
-#ifdef __alpha__
+#elif defined(__alpha__)
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
asm ("imb");
}
-#endif
-
-#ifdef __sparc__
-
+#elif defined(__sparc__)
static void inline flush_icache_range(unsigned long start, unsigned long stop)
{
unsigned long p;
for (; p < stop; p += 8)
__asm__ __volatile__("flush\t%0" : : "r" (p));
}
-
-#endif
-
-#ifdef __arm__
+#elif defined(__arm__)
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
register unsigned long _beg __asm ("a1") = start;
register unsigned long _flg __asm ("a3") = 0;
__asm __volatile__ ("swi 0x9f0002" : : "r" (_beg), "r" (_end), "r" (_flg));
}
-#endif
+#elif defined(__mc68000)
-#ifdef __mc68000
-#include <asm/cachectl.h>
+# include <asm/cachectl.h>
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
cacheflush(start,FLUSH_SCOPE_LINE,FLUSH_CACHE_BOTH,stop-start+16);
}
+#elif defined(__mips__)
+
+#include <sys/cachectl.h>
+static inline void flush_icache_range(unsigned long start, unsigned long stop)
+{
+ _flush_cache ((void *)start, stop - start, BCACHE);
+}
+#else
+#error unsupported CPU
#endif
#ifdef __alpha__
#ifdef __arm__
-#define MAX_OP_SIZE (128 * 4) /* in bytes */
-/* max size of the code that can be generated without calling arm_flush_ldr */
-#define MAX_FRAG_SIZE (1024 * 4)
-//#define MAX_FRAG_SIZE (135 * 4) /* for testing */
+#define ARM_LDR_TABLE_SIZE 1024
typedef struct LDREntry {
uint8_t *ptr;
uint32_t *data_ptr;
+ unsigned type:2;
} LDREntry;
static LDREntry arm_ldr_table[1024];
-static uint32_t arm_data_table[1024];
+static uint32_t arm_data_table[ARM_LDR_TABLE_SIZE];
extern char exec_loop;
}
static uint8_t *arm_flush_ldr(uint8_t *gen_code_ptr,
- LDREntry *ldr_start, LDREntry *ldr_end,
- uint32_t *data_start, uint32_t *data_end,
+ LDREntry *ldr_start, LDREntry *ldr_end,
+ uint32_t *data_start, uint32_t *data_end,
int gen_jmp)
{
LDREntry *le;
int offset, data_size, target;
uint8_t *data_ptr;
uint32_t insn;
-
- data_size = (uint8_t *)data_end - (uint8_t *)data_start;
+ uint32_t mask;
+
+ data_size = (data_end - data_start) << 2;
if (gen_jmp) {
/* generate branch to skip the data */
arm_reloc_pc24((uint32_t *)gen_code_ptr, 0xeafffffe, target);
gen_code_ptr += 4;
}
-
+
/* copy the data */
data_ptr = gen_code_ptr;
memcpy(gen_code_ptr, data_start, data_size);
gen_code_ptr += data_size;
-
+
/* patch the ldr to point to the data */
for(le = ldr_start; le < ldr_end; le++) {
ptr = (uint32_t *)le->ptr;
- offset = ((unsigned long)(le->data_ptr) - (unsigned long)data_start) +
- (unsigned long)data_ptr -
+ offset = ((unsigned long)(le->data_ptr) - (unsigned long)data_start) +
+ (unsigned long)data_ptr -
(unsigned long)ptr - 8;
- insn = *ptr & ~(0xfff | 0x00800000);
if (offset < 0) {
- offset = - offset;
- } else {
- insn |= 0x00800000;
- }
- if (offset > 0xfff) {
- fprintf(stderr, "Error ldr offset\n");
+ fprintf(stderr, "Negative constant pool offset\n");
abort();
}
- insn |= offset;
+ switch (le->type) {
+ case 0: /* ldr */
+ mask = ~0x00800fff;
+ if (offset >= 4096) {
+ fprintf(stderr, "Bad ldr offset\n");
+ abort();
+ }
+ break;
+ case 1: /* ldc */
+ mask = ~0x008000ff;
+ if (offset >= 1024 ) {
+ fprintf(stderr, "Bad ldc offset\n");
+ abort();
+ }
+ break;
+ case 2: /* add */
+ mask = ~0xfff;
+ if (offset >= 1024 ) {
+ fprintf(stderr, "Bad add offset\n");
+ abort();
+ }
+ break;
+ default:
+ fprintf(stderr, "Bad pc relative fixup\n");
+ abort();
+ }
+ insn = *ptr & mask;
+ switch (le->type) {
+ case 0: /* ldr */
+ insn |= offset | 0x00800000;
+ break;
+ case 1: /* ldc */
+ insn |= (offset >> 2) | 0x00800000;
+ break;
+ case 2: /* add */
+ insn |= (offset >> 2) | 0xf00;
+ break;
+ }
*ptr = insn;
}
return gen_code_ptr;
#ifdef __ia64
-
/* Patch instruction with "val" where "mask" has 1 bits. */
static inline void ia64_patch (uint64_t insn_addr, uint64_t mask, uint64_t val)
{
0x05, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, /* nop 0; brl IP */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0
};
- uint8_t *gen_code_ptr = *gen_code_pp, *plt_start, *got_start, *vp;
+ uint8_t *gen_code_ptr = *gen_code_pp, *plt_start, *got_start;
+ uint64_t *vp;
struct ia64_fixup *fixup;
unsigned int offset = 0;
struct fdesc {
/* First, create the GOT: */
for (fixup = ltoff_fixes; fixup; fixup = fixup->next) {
/* first check if we already have this value in the GOT: */
- for (vp = got_start; vp < gen_code_ptr; ++vp)
- if (*(uint64_t *) vp == fixup->value)
+ for (vp = (uint64_t *) got_start; vp < (uint64_t *) gen_code_ptr; ++vp)
+ if (*vp == fixup->value)
break;
- if (vp == gen_code_ptr) {
+ if (vp == (uint64_t *) gen_code_ptr) {
/* Nope, we need to put the value in the GOT: */
- *(uint64_t *) vp = fixup->value;
+ *vp = fixup->value;
gen_code_ptr += 8;
}
ia64_imm22(fixup->addr, (long) vp - gp);
}
+ /* Keep code ptr aligned. */
+ if ((long) gen_code_ptr & 15)
+ gen_code_ptr += 8;
*gen_code_pp = gen_code_ptr;
}
projects / qemu.git / blobdiff