target/nios2: Remove the deprecated Nios II target

The Nios II target is deprecated since v8.2 in commit 9997771bc1
("target/nios2: Deprecate the Nios II architecture").

Remove:
- Buildsys / CI infra
- User emulation
- System emulation (10m50-ghrd & nios2-generic-nommu machines)
- Tests

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Message-Id: <20240327144806.11319-3-philmd@linaro.org>

1 files changed, 0 insertions, 99 deletions

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 60cf55b..f4a0b78 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1505,105 +1505,6 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env
 
 #endif /* TARGET_MICROBLAZE */
 
-#ifdef TARGET_NIOS2
-
-#define elf_check_arch(x) ((x) == EM_ALTERA_NIOS2)
-
-#define ELF_CLASS   ELFCLASS32
-#define ELF_ARCH    EM_ALTERA_NIOS2
-
-static void init_thread(struct target_pt_regs *regs, struct image_info *infop)
-{
-    regs->ea = infop->entry;
-    regs->sp = infop->start_stack;
-}
-
-#define LO_COMMPAGE  TARGET_PAGE_SIZE
-
-static bool init_guest_commpage(void)
-{
-    static const uint8_t kuser_page[4 + 2 * 64] = {
-        /* __kuser_helper_version */
-        [0x00] = 0x02, 0x00, 0x00, 0x00,
-
-        /* __kuser_cmpxchg */
-        [0x04] = 0x3a, 0x6c, 0x3b, 0x00,  /* trap 16 */
-                 0x3a, 0x28, 0x00, 0xf8,  /* ret */
-
-        /* __kuser_sigtramp */
-        [0x44] = 0xc4, 0x22, 0x80, 0x00,  /* movi r2, __NR_rt_sigreturn */
-                 0x3a, 0x68, 0x3b, 0x00,  /* trap 0 */
-    };
-
-    int host_page_size = qemu_real_host_page_size();
-    void *want, *addr;
-
-    want = g2h_untagged(LO_COMMPAGE & -host_page_size);
-    addr = mmap(want, host_page_size, PROT_READ | PROT_WRITE,
-                MAP_ANONYMOUS | MAP_PRIVATE |
-                (reserved_va ? MAP_FIXED : MAP_FIXED_NOREPLACE),
-                -1, 0);
-    if (addr == MAP_FAILED) {
-        perror("Allocating guest commpage");
-        exit(EXIT_FAILURE);
-    }
-    if (addr != want) {
-        return false;
-    }
-
-    memcpy(g2h_untagged(LO_COMMPAGE), kuser_page, sizeof(kuser_page));
-
-    if (mprotect(addr, host_page_size, PROT_READ)) {
-        perror("Protecting guest commpage");
-        exit(EXIT_FAILURE);
-    }
-
-    page_set_flags(LO_COMMPAGE, LO_COMMPAGE | ~TARGET_PAGE_MASK,
-                   PAGE_READ | PAGE_EXEC | PAGE_VALID);
-    return true;
-}
-
-#define ELF_EXEC_PAGESIZE        4096
-
-#define USE_ELF_CORE_DUMP
-#define ELF_NREG 49
-typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
-
-/* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs.  */
-static void elf_core_copy_regs(target_elf_gregset_t *regs,
-                               const CPUNios2State *env)
-{
-    int i;
-
-    (*regs)[0] = -1;
-    for (i = 1; i < 8; i++)    /* r0-r7 */
-        (*regs)[i] = tswapreg(env->regs[i + 7]);
-
-    for (i = 8; i < 16; i++)   /* r8-r15 */
-        (*regs)[i] = tswapreg(env->regs[i - 8]);
-
-    for (i = 16; i < 24; i++)  /* r16-r23 */
-        (*regs)[i] = tswapreg(env->regs[i + 7]);
-    (*regs)[24] = -1;    /* R_ET */
-    (*regs)[25] = -1;    /* R_BT */
-    (*regs)[26] = tswapreg(env->regs[R_GP]);
-    (*regs)[27] = tswapreg(env->regs[R_SP]);
-    (*regs)[28] = tswapreg(env->regs[R_FP]);
-    (*regs)[29] = tswapreg(env->regs[R_EA]);
-    (*regs)[30] = -1;    /* R_SSTATUS */
-    (*regs)[31] = tswapreg(env->regs[R_RA]);
-
-    (*regs)[32] = tswapreg(env->pc);
-
-    (*regs)[33] = -1; /* R_STATUS */
-    (*regs)[34] = tswapreg(env->regs[CR_ESTATUS]);
-
-    for (i = 35; i < 49; i++)    /* ... */
-        (*regs)[i] = -1;
-}
-
-#endif /* TARGET_NIOS2 */
-
 #ifdef TARGET_OPENRISC
 
 #define ELF_ARCH EM_OPENRISC