xref: /gem5/src/arch/x86/isa/insts/general_purpose/data_transfer/stack_operations.py

# Copyright (c) 2007 The Hewlett-Packard Development Company
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# this list of conditions and the following disclaimer.  Redistributions
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# Authors: Gabe Black

microcode = '''
def macroop POP_R {
    # Make the default data size of pops 64 bits in 64 bit mode
    .adjust_env oszIn64Override

    ld reg, ss, [1, t0, rsp]
    addi rsp, rsp, dsz
};

def macroop POP_M {
    # Make the default data size of pops 64 bits in 64 bit mode
    .adjust_env oszIn64Override

    ld t1, ss, [1, t0, rsp]
    addi rsp, rsp, dsz
    st t1, seg, sib, disp
};

def macroop POP_P {
    # Make the default data size of pops 64 bits in 64 bit mode
    .adjust_env oszIn64Override

    rdip t7
    ld t1, ss, [1, t0, rsp]
    addi rsp, rsp, dsz
    st t1, seg, riprel, disp
};

def macroop PUSH_R {
    # Make the default data size of pops 64 bits in 64 bit mode
    .adjust_env oszIn64Override

    # This needs to work slightly differently from the other versions of push
    # because the -original- version of the stack pointer is what gets pushed
    st reg, ss, [1, t0, rsp], "-env.dataSize"
    subi rsp, rsp, dsz
};

def macroop PUSH_I {
    # Make the default data size of pops 64 bits in 64 bit mode
    .adjust_env oszIn64Override

    limm t1, imm
    subi rsp, rsp, dsz
    st t1, ss, [1, t0, rsp]
};

def macroop PUSH_M {
    # Make the default data size of pops 64 bits in 64 bit mode
    .adjust_env oszIn64Override

    ld t1, seg, sib, disp
    subi rsp, rsp, dsz
    st t1, ss, [1, t0, rsp]
};

def macroop PUSH_P {
    # Make the default data size of pops 64 bits in 64 bit mode
    .adjust_env oszIn64Override

    rdip t7
    ld t1, seg, riprel, disp
    subi rsp, rsp, dsz
    st t1, ss, [1, t0, rsp]
};

def macroop PUSHA {
    st rax, ss, [1, t0, rsp], "-0 * env.dataSize"
    st rcx, ss, [1, t0, rsp], "-1 * env.dataSize"
    st rdx, ss, [1, t0, rsp], "-2 * env.dataSize"
    st rbx, ss, [1, t0, rsp], "-3 * env.dataSize"
    st rsp, ss, [1, t0, rsp], "-4 * env.dataSize"
    st rbp, ss, [1, t0, rsp], "-5 * env.dataSize"
    st rsi, ss, [1, t0, rsp], "-6 * env.dataSize"
    st rdi, ss, [1, t0, rsp], "-7 * env.dataSize"
    subi rsp, rsp, "8 * env.dataSize"
};

def macroop POPA {
    ld rdi, ss, [1, t0, rsp], "0 * env.dataSize"
    ld rsi, ss, [1, t0, rsp], "1 * env.dataSize"
    ld rbp, ss, [1, t0, rsp], "2 * env.dataSize"
    ld rbx, ss, [1, t0, rsp], "4 * env.dataSize"
    ld rdx, ss, [1, t0, rsp], "5 * env.dataSize"
    ld rcx, ss, [1, t0, rsp], "6 * env.dataSize"
    ld rax, ss, [1, t0, rsp], "7 * env.dataSize"
    addi rsp, rsp, "8 * env.dataSize"
};

def macroop LEAVE {
    # Make the default data size of pops 64 bits in 64 bit mode
    .adjust_env oszIn64Override

    mov rsp, rsp, rbp
    ld rbp, ss, [1, t0, rsp]
    addi rsp, rsp, dsz
};
'''
#let {{
#    class ENTER(Inst):
#	"GenFault ${new UnimpInstFault}"
#}};