| 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 "target_elf.h" |
| 7 | |
| 8 | |
| 9 | const char *get_elf_cpu_model(uint32_t eflags) |
| 10 | { |
| 11 | return "la464"; |
| 12 | } |
| 13 | |
| 14 | /* See arch/loongarch/include/uapi/asm/hwcap.h */ |
| 15 | enum { |
| 16 | HWCAP_LOONGARCH_CPUCFG = (1 << 0), |
| 17 | HWCAP_LOONGARCH_LAM = (1 << 1), |
| 18 | HWCAP_LOONGARCH_UAL = (1 << 2), |
| 19 | HWCAP_LOONGARCH_FPU = (1 << 3), |
| 20 | HWCAP_LOONGARCH_LSX = (1 << 4), |
| 21 | HWCAP_LOONGARCH_LASX = (1 << 5), |
| 22 | HWCAP_LOONGARCH_CRC32 = (1 << 6), |
| 23 | HWCAP_LOONGARCH_COMPLEX = (1 << 7), |
| 24 | HWCAP_LOONGARCH_CRYPTO = (1 << 8), |
| 25 | HWCAP_LOONGARCH_LVZ = (1 << 9), |
| 26 | HWCAP_LOONGARCH_LBT_X86 = (1 << 10), |
| 27 | HWCAP_LOONGARCH_LBT_ARM = (1 << 11), |
| 28 | HWCAP_LOONGARCH_LBT_MIPS = (1 << 12), |
| 29 | }; |
| 30 | |
| 31 | const char *elf_hwcap_str(uint32_t bit) |
| 32 | { |
| 33 | static const char *hwcap_str[] = { |
| 34 | [__builtin_ctz(HWCAP_LOONGARCH_CPUCFG )] = "cpucfg", |
| 35 | [__builtin_ctz(HWCAP_LOONGARCH_LAM )] = "lam", |
| 36 | [__builtin_ctz(HWCAP_LOONGARCH_UAL )] = "lam_bh", |
| 37 | [__builtin_ctz(HWCAP_LOONGARCH_FPU )] = "fpu", |
| 38 | [__builtin_ctz(HWCAP_LOONGARCH_LSX )] = "lsx", |
| 39 | [__builtin_ctz(HWCAP_LOONGARCH_LASX )] = "lasx", |
| 40 | [__builtin_ctz(HWCAP_LOONGARCH_CRC32 )] = "crc32", |
| 41 | [__builtin_ctz(HWCAP_LOONGARCH_COMPLEX )] = "complex", |
| 42 | [__builtin_ctz(HWCAP_LOONGARCH_CRYPTO )] = "crypto", |
| 43 | [__builtin_ctz(HWCAP_LOONGARCH_LVZ )] = "lvz", |
| 44 | [__builtin_ctz(HWCAP_LOONGARCH_LBT_X86 )] = "lbt_x86", |
| 45 | [__builtin_ctz(HWCAP_LOONGARCH_LBT_ARM )] = "lbt_arm", |
| 46 | [__builtin_ctz(HWCAP_LOONGARCH_LBT_MIPS)] = "lbt_mips", |
| 47 | }; |
| 48 | |
| 49 | return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL; |
| 50 | } |
| 51 | abi_ulong get_elf_hwcap(CPUState *cs) |
| 52 | { |
| 53 | LoongArchCPU *cpu = LOONGARCH_CPU(cs); |
| 54 | abi_ulong hwcaps = 0; |
| 55 | |
| 56 | hwcaps |= HWCAP_LOONGARCH_CRC32; |
| 57 | |
| 58 | if (FIELD_EX32(cpu->env.cpucfg[1], CPUCFG1, UAL)) { |
| 59 | hwcaps |= HWCAP_LOONGARCH_UAL; |
| 60 | } |
| 61 | |
| 62 | if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, FP)) { |
| 63 | hwcaps |= HWCAP_LOONGARCH_FPU; |
| 64 | } |
| 65 | |
| 66 | if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LAM)) { |
| 67 | hwcaps |= HWCAP_LOONGARCH_LAM; |
| 68 | } |
| 69 | |
| 70 | if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LSX)) { |
| 71 | hwcaps |= HWCAP_LOONGARCH_LSX; |
| 72 | } |
| 73 | |
| 74 | if (FIELD_EX32(cpu->env.cpucfg[2], CPUCFG2, LASX)) { |
| 75 | hwcaps |= HWCAP_LOONGARCH_LASX; |
| 76 | } |
| 77 | |
| 78 | return hwcaps; |
| 79 | } |
| 80 | |
| 81 | const char *get_elf_platform(CPUState *cs) |
| 82 | { |
| 83 | return "loongarch"; |
| 84 | } |
| 85 | |
| 86 | #define tswapreg(ptr) tswapal(ptr) |
| 87 | |
| 88 | void elf_core_copy_regs(target_elf_gregset_t *r, const CPULoongArchState *env) |
| 89 | { |
| 90 | CPUSysState *sys = env_sys((CPULoongArchState *)env); |
| 91 | |
| 92 | r->pt.regs[0] = 0; |
| 93 | |
| 94 | for (int i = 1; i < ARRAY_SIZE(env->gpr); i++) { |
| 95 | r->pt.regs[i] = tswapreg(env->gpr[i]); |
| 96 | } |
| 97 | |
| 98 | r->pt.csr_era = tswapreg(env->pc); |
| 99 | r->pt.csr_badv = tswapreg(sys->CSR_BADV); |
| 100 | } |