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R_PPC_REL24 safety net

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4706 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
malc 2008-06-09 06:06:28 +00:00
parent 398ce98e4f
commit 5be1676206
1 changed files with 8 additions and 0 deletions
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8
dyngen.c
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@ -1963,6 +1963,14 @@ void gen_code(const char *name, host_ulong offset, host_ulong size,
break;
case R_PPC_REL24:
/* warning: must be at 32 MB distancy */
fprintf(outfile, "{\n"
" long disp = (%s - (long)(gen_code_ptr + %d) + %d);\n"
" if ((disp << 6) >> 6 != disp) {;\n"
" fprintf(stderr, \"Branch target is too far away\\n\");"
" abort();\n"
" }\n"
"}\n",
relname, reloc_offset, addend);
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((%s - (long)(gen_code_ptr + %d) + %d) & 0x03fffffc);\n",
reloc_offset, reloc_offset, relname, reloc_offset, addend);
break;