/*
 * libbinrec: a recompiling translator for machine code
 * Copyright (c) 2016 Andrew Church <achurch@achurch.org>
 *
 * This software may be copied and redistributed under certain conditions;
 * see the file "COPYING" in the source code distribution for details.
 * NO WARRANTY is provided with this software.
 */

#include "tests/common.h"
#include "tests/host-x86/common.h"


static const binrec_setup_t setup = {
    .host = BINREC_ARCH_X86_64_SYSV,
};
static const unsigned int host_opt = 0;

static int add_rtl(RTLUnit *unit)
{
    int regs[12], reg1, reg2, reg3;
    for (int i = 0; i < lenof(regs); i++) {
        EXPECT(regs[i] = rtl_alloc_register(unit, RTLTYPE_INT32));
        EXPECT(rtl_add_insn(unit, RTLOP_LOAD_IMM, regs[i], 0, 0, i+1));
    }

    EXPECT(reg1 = rtl_alloc_register(unit, RTLTYPE_INT32));
    EXPECT(rtl_add_insn(unit, RTLOP_LOAD_IMM, reg1, 0, 0, 1));
    EXPECT(reg2 = rtl_alloc_register(unit, RTLTYPE_INT32));
    /* reg1 will be spilled by the instruction after this one, but that
     * shouldn't cause this instruction to treat it as spilled. */
    EXPECT(rtl_add_insn(unit, RTLOP_ADDI, reg2, reg1, 0, 2));
    EXPECT(reg3 = rtl_alloc_register(unit, RTLTYPE_INT32));
    /* This spills reg1. */
    EXPECT(rtl_add_insn(unit, RTLOP_ADDI, reg3, reg2, 0, 3));

    for (int i = 0; i < lenof(regs); i++) {
        EXPECT(rtl_add_insn(unit, RTLOP_NOP, 0, regs[i], 0, 0));
    }
    EXPECT(rtl_add_insn(unit, RTLOP_NOP, 0, reg3, 0, 0));
    EXPECT(rtl_add_insn(unit, RTLOP_NOP, 0, reg2, 0, 0));
    /* Reference reg1 last to cause it to be chosen for spilling. */
    EXPECT(rtl_add_insn(unit, RTLOP_NOP, 0, reg1, 0, 0));

    return EXIT_SUCCESS;
}

static const uint8_t expected_code[] = {
    0x53,                               // push %rbx
    0x55,                               // push %rbp
    0x41,0x54,                          // push %r12
    0x41,0x55,                          // push %r13
    0x41,0x56,                          // push %r14
    0x48,0x83,0xEC,0x10,                // sub $16,%rsp
    0xB8,0x01,0x00,0x00,0x00,           // mov $1,%eax
    0xB9,0x02,0x00,0x00,0x00,           // mov $2,%ecx
    0xBA,0x03,0x00,0x00,0x00,           // mov $3,%edx
    0xBE,0x04,0x00,0x00,0x00,           // mov $4,%esi
    0xBF,0x05,0x00,0x00,0x00,           // mov $5,%edi
    0x41,0xB8,0x06,0x00,0x00,0x00,      // mov $6,%r8d
    0x41,0xB9,0x07,0x00,0x00,0x00,      // mov $7,%r9d
    0x41,0xBA,0x08,0x00,0x00,0x00,      // mov $8,%r10d
    0x41,0xBB,0x09,0x00,0x00,0x00,      // mov $9,%r11d
    0xBB,0x0A,0x00,0x00,0x00,           // mov $10,%ebx
    0xBD,0x0B,0x00,0x00,0x00,           // mov $11,%ebp
    0x41,0xBC,0x0C,0x00,0x00,0x00,      // mov $12,%r12d
    0x41,0xBD,0x01,0x00,0x00,0x00,      // mov $1,%r13d
    0x45,0x8B,0xF5,                     // mov %r13d,%r14d
    0x41,0x83,0xC6,0x02,                // add $2,%r14d
    0x44,0x89,0x2C,0x24,                // mov %r13d,(%rsp)
    0x45,0x8B,0xEE,                     // mov %r14d,%r13d
    0x41,0x83,0xC5,0x03,                // add $3,%r13d
    0x48,0x83,0xC4,0x10,                // add $16,%rsp
    0x41,0x5E,                          // pop %r14
    0x41,0x5D,                          // pop %r13
    0x41,0x5C,                          // pop %r12
    0x5D,                               // pop %rbp
    0x5B,                               // pop %rbx
    0xC3,                               // ret
};

static const char expected_log[] = "";

#include "tests/rtl-translate-test.i"