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1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2
3 #include "qemu/osdep.h"
4 #include "qemu.h"
5 #include "loader.h"
6 #include "elf.h"
7 #include "target_elf.h"
8
9
10 const char *get_elf_cpu_model(uint32_t eflags)
11 {
12 return "qemu";
13 }
14
15 #define GET_FEATURE(_feat, _hwcap) \
16 do { if (s390_has_feat(_feat)) { hwcap |= _hwcap; } } while (0)
17
18 abi_ulong get_elf_hwcap(CPUState *cs)
19 {
20 /*
21 * Let's assume we always have esan3 and zarch.
22 * 31-bit processes can use 64-bit registers (high gprs).
23 */
24 uint32_t hwcap = HWCAP_S390_ESAN3 | HWCAP_S390_ZARCH | HWCAP_S390_HIGH_GPRS;
25
26 GET_FEATURE(S390_FEAT_STFLE, HWCAP_S390_STFLE);
27 GET_FEATURE(S390_FEAT_MSA, HWCAP_S390_MSA);
28 GET_FEATURE(S390_FEAT_LONG_DISPLACEMENT, HWCAP_S390_LDISP);
29 GET_FEATURE(S390_FEAT_EXTENDED_IMMEDIATE, HWCAP_S390_EIMM);
30 if (s390_has_feat(S390_FEAT_EXTENDED_TRANSLATION_3) &&
31 s390_has_feat(S390_FEAT_ETF3_ENH)) {
32 hwcap |= HWCAP_S390_ETF3EH;
33 }
34 GET_FEATURE(S390_FEAT_VECTOR, HWCAP_S390_VXRS);
35 GET_FEATURE(S390_FEAT_VECTOR_ENH, HWCAP_S390_VXRS_EXT);
36 GET_FEATURE(S390_FEAT_VECTOR_ENH2, HWCAP_S390_VXRS_EXT2);
37
38 return hwcap;
39 }
40
41 const char *elf_hwcap_str(uint32_t bit)
42 {
43 static const char *hwcap_str[] = {
44 [HWCAP_S390_NR_ESAN3] = "esan3",
45 [HWCAP_S390_NR_ZARCH] = "zarch",
46 [HWCAP_S390_NR_STFLE] = "stfle",
47 [HWCAP_S390_NR_MSA] = "msa",
48 [HWCAP_S390_NR_LDISP] = "ldisp",
49 [HWCAP_S390_NR_EIMM] = "eimm",
50 [HWCAP_S390_NR_DFP] = "dfp",
51 [HWCAP_S390_NR_HPAGE] = "edat",
52 [HWCAP_S390_NR_ETF3EH] = "etf3eh",
53 [HWCAP_S390_NR_HIGH_GPRS] = "highgprs",
54 [HWCAP_S390_NR_TE] = "te",
55 [HWCAP_S390_NR_VXRS] = "vx",
56 [HWCAP_S390_NR_VXRS_BCD] = "vxd",
57 [HWCAP_S390_NR_VXRS_EXT] = "vxe",
58 [HWCAP_S390_NR_GS] = "gs",
59 [HWCAP_S390_NR_VXRS_EXT2] = "vxe2",
60 [HWCAP_S390_NR_VXRS_PDE] = "vxp",
61 [HWCAP_S390_NR_SORT] = "sort",
62 [HWCAP_S390_NR_DFLT] = "dflt",
63 [HWCAP_S390_NR_NNPA] = "nnpa",
64 [HWCAP_S390_NR_PCI_MIO] = "pcimio",
65 [HWCAP_S390_NR_SIE] = "sie",
66 };
67
68 return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL;
69 }
70
71 void elf_core_copy_regs(target_elf_gregset_t *r, const CPUS390XState *env)
72 {
73 r->pt.psw.mask = tswapal(env->psw.mask);
74 r->pt.psw.addr = tswapal(env->psw.addr);
75 for (int i = 0; i < 16; i++) {
76 r->pt.gprs[i] = tswapal(env->regs[i]);
77 }
78 for (int i = 0; i < 16; i++) {
79 r->pt.acrs[i] = tswap32(env->aregs[i]);
80 }
81 r->pt.orig_gpr2 = 0;
82 }