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Fix up offset calculations in x86-64 absolute address opcode generation, and add pointer to RAM array in NO_IMMEDIATES blocks. Fixes crashes/segfaults with x86-64 recompiler.

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This commit is contained in:
SarahW 2019-04-30 21:20:00 +01:00
commit b98a6d63b1
3 changed files with 74 additions and 16 deletions
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2
src/codegen_backend_x86-64.c
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@ -358,6 +358,8 @@ void codegen_backend_prologue(codeblock_t *block)
host_x86_SUB32_REG_IMM(block, REG_EAX, block->TOP);
host_x86_MOV32_BASE_OFFSET_REG(block, REG_RSP, IREG_TOP_diff_stack_offset, REG_EAX);
}
if (block->flags & CODEBLOCK_NO_IMMEDIATES)
host_x86_MOV64_REG_IMM(block, REG_R12, (uintptr_t)ram);
}
void codegen_backend_epilogue(codeblock_t *block)