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David Woodhouse |
66db2b |
--- qemu/dyngen.c.x 2005-05-16 10:30:43.000000000 +0100
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David Woodhouse |
66db2b |
+++ qemu/dyngen.c 2005-05-16 10:32:41.000000000 +0100
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David Woodhouse |
66db2b |
@@ -1996,6 +1996,9 @@ void gen_code(const char *name, host_ulo
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David Woodhouse |
66db2b |
int retpos;
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David Woodhouse |
66db2b |
int exit_addrs[MAX_EXITS];
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David Woodhouse |
66db2b |
#endif
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David Woodhouse |
66db2b |
+#if defined(HOST_PPC)
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David Woodhouse |
66db2b |
+ uint8_t *blr_addr = NULL;
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David Woodhouse |
66db2b |
+#endif
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David Woodhouse |
66db2b |
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David Woodhouse |
66db2b |
/* Compute exact size excluding prologue and epilogue instructions.
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David Woodhouse |
66db2b |
* Increment start_offset to skip epilogue instructions, then compute
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David Woodhouse |
66db2b |
@@ -2018,9 +2021,23 @@ void gen_code(const char *name, host_ulo
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David Woodhouse |
66db2b |
p = (void *)(p_end - 4);
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David Woodhouse |
66db2b |
if (p == p_start)
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David Woodhouse |
66db2b |
error("empty code for %s", name);
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David Woodhouse |
66db2b |
- if (get32((uint32_t *)p) != 0x4e800020)
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David Woodhouse |
66db2b |
- error("blr expected at the end of %s", name);
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David Woodhouse |
66db2b |
- copy_size = p - p_start;
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David Woodhouse |
66db2b |
+ if (get32((uint32_t *)p) == 0x4e800020) {
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David Woodhouse |
66db2b |
+ copy_size = p - p_start; /* blr at end */
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David Woodhouse |
66db2b |
+ } else {
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David Woodhouse |
66db2b |
+ /* Find the blr and note its address so that we
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David Woodhouse |
66db2b |
+ can emit code to rewrite it to a branch. */
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David Woodhouse |
66db2b |
+ do {
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David Woodhouse |
66db2b |
+ p -= 4;
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David Woodhouse |
66db2b |
+
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David Woodhouse |
66db2b |
+ if (get32((uint32_t *)p) == 0x4e800020) {
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David Woodhouse |
66db2b |
+ blr_addr = p;
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David Woodhouse |
66db2b |
+ copy_size = p_end - p_start;
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David Woodhouse |
66db2b |
+ break;
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David Woodhouse |
66db2b |
+ }
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David Woodhouse |
66db2b |
+ } while (p > p_start);
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David Woodhouse |
66db2b |
+ if (p == p_start)
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David Woodhouse |
66db2b |
+ error("blr expected in the end of %s", name);
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David Woodhouse |
66db2b |
+ }
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David Woodhouse |
66db2b |
}
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David Woodhouse |
66db2b |
#elif defined(HOST_S390)
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David Woodhouse |
66db2b |
{
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David Woodhouse |
66db2b |
@@ -2633,6 +2650,9 @@ void gen_code(const char *name, host_ulo
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David Woodhouse |
66db2b |
#else
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David Woodhouse |
66db2b |
#error unsupport object format
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David Woodhouse |
66db2b |
#endif
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David Woodhouse |
66db2b |
+ if (blr_addr)
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David Woodhouse |
66db2b |
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = 0x48000000 | %d;\n",
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David Woodhouse |
66db2b |
+ blr_addr - p_start, p_end - blr_addr);
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David Woodhouse |
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}
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David Woodhouse |
66db2b |
#elif defined(HOST_S390)
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David Woodhouse |
66db2b |
{
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