1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 3 #include "qemu/osdep.h" 4 #include "qemu/error-report.h" 5 #include "qemu.h" 6 #include "loader.h" 7 #include "target_elf.h" 8 9 10 const char *get_elf_cpu_model(uint32_t eflags) 11 { 12 return "max"; 13 } 14 15 abi_ulong get_elf_hwcap(CPUState *cs) 16 { 17 return cpu_env(cs)->features[FEAT_1_EDX]; 18 } 19 20 const char *get_elf_platform(CPUState *cs) 21 { 22 return "x86_64"; 23 } 24 25 bool init_guest_commpage(void) 26 { 27 /* 28 * The vsyscall page is at a high negative address aka kernel space, 29 * which means that we cannot actually allocate it with target_mmap. 30 * We still should be able to use page_set_flags, unless the user 31 * has specified -R reserved_va, which would trigger an assert(). 32 */ 33 if (reserved_va != 0 && 34 TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE - 1 > reserved_va) { 35 error_report("Cannot allocate vsyscall page"); 36 exit(EXIT_FAILURE); 37 } 38 page_set_flags(TARGET_VSYSCALL_PAGE, 39 TARGET_VSYSCALL_PAGE | ~TARGET_PAGE_MASK, 40 PAGE_EXEC | PAGE_VALID, PAGE_VALID); 41 return true; 42 } 43 44 void elf_core_copy_regs(target_elf_gregset_t *r, const CPUX86State *env) 45 { 46 r->pt.r15 = tswapal(env->regs[15]); 47 r->pt.r14 = tswapal(env->regs[14]); 48 r->pt.r13 = tswapal(env->regs[13]); 49 r->pt.r12 = tswapal(env->regs[12]); 50 r->pt.bp = tswapal(env->regs[R_EBP]); 51 r->pt.bx = tswapal(env->regs[R_EBX]); 52 r->pt.r11 = tswapal(env->regs[11]); 53 r->pt.r10 = tswapal(env->regs[10]); 54 r->pt.r9 = tswapal(env->regs[9]); 55 r->pt.r8 = tswapal(env->regs[8]); 56 r->pt.ax = tswapal(env->regs[R_EAX]); 57 r->pt.cx = tswapal(env->regs[R_ECX]); 58 r->pt.dx = tswapal(env->regs[R_EDX]); 59 r->pt.si = tswapal(env->regs[R_ESI]); 60 r->pt.di = tswapal(env->regs[R_EDI]); 61 r->pt.orig_ax = tswapal(get_task_state(env_cpu_const(env))->orig_ax); 62 r->pt.ip = tswapal(env->eip); 63 r->pt.cs = tswapal(env->segs[R_CS].selector & 0xffff); 64 r->pt.flags = tswapal(env->eflags); 65 r->pt.sp = tswapal(env->regs[R_ESP]); 66 r->pt.ss = tswapal(env->segs[R_SS].selector & 0xffff); 67 r->pt.fs_base = tswapal(env->segs[R_FS].base); 68 r->pt.gs_base = tswapal(env->segs[R_GS].base); 69 r->pt.ds = tswapal(env->segs[R_DS].selector & 0xffff); 70 r->pt.es = tswapal(env->segs[R_ES].selector & 0xffff); 71 r->pt.fs = tswapal(env->segs[R_FS].selector & 0xffff); 72 r->pt.gs = tswapal(env->segs[R_GS].selector & 0xffff); 73 } 74