R_SP
reg.r_regs[R_SP] = alpha_pal_rdusp();
ksc.sc_regs[R_SP] = oldsp;
alpha_pal_wrusp(ksc.sc_regs[R_SP]);
regs->r_regs[R_SP] = process_pcb(p)->pcb_hw.apcb_usp;
process_pcb(p)->pcb_hw.apcb_usp = regs->r_regs[R_SP];
#define sc_sp sc_regs[R_SP]
uint16_t old_sp = emu->x86.R_SP;
emu->x86.R_SP += 2;/* skip SP */
emu->x86.R_AX = emu->x86.R_SP;
emu->x86.R_SP = (uint16_t) tmp;
emu->x86.R_SP = fetch_word_imm(emu);
emu->x86.R_SP += imm;
frame_pointer = emu->x86.R_SP;
emu->x86.R_SP = (uint16_t) (emu->x86.R_SP - local);
emu->x86.R_SP = emu->x86.R_BP;
emu->x86.R_SP += imm;
return &emu->x86.R_SP;
emu->x86.R_SP -= 2;
store_word(emu, emu->x86.R_SS, emu->x86.R_SP, w);
emu->x86.R_SP -= 4;
store_long(emu, emu->x86.R_SS, emu->x86.R_SP, w);
res = fetch_word(emu, emu->x86.R_SS, emu->x86.R_SP);
emu->x86.R_SP += 2;
res = fetch_long(emu, emu->x86.R_SS, emu->x86.R_SP);
emu->x86.R_SP += 4;