motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-12-11 16:00:50 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

nios2: Add usermode binaries emulation

Browse source 
Add missing bits for qemu-user required for emulating Altera Nios2
userspace binaries.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Jeff Da Silva <jdasilva@altera.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Sandra Loosemore <sandra@codesourcery.com>
Cc: Yves Vandervennet <yvanderv@altera.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Message-Id: <20170118220146.489-4-marex@denx.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Marek Vasut 2017-01-18 23:01:42 +01:00 • committed by Richard Henderson
parent 3f0c342309
commit a0a839b65b
11 changed files with 1148 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

57
linux-user/elfload.c
View file

@ -967,6 +967,63 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env
#endif /* TARGET_MICROBLAZE */
#ifdef TARGET_NIOS2
#define ELF_START_MMAP 0x80000000
#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;
regs->estatus = 0x3;
}
#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->regs[R_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_START_MMAP 0x08000000