nx_emu_armv7a.nx
buildroot/runtime/nx_emu_armv7a.nx
about
nx_emu_armv7a.nx -- sovereign ARMv7-A (32-bit ARM) interpreter (NX-EMU).
Little-endian, fixed 32-bit instrs, 16 GPRs + C flag (for i64-pair add/sub carry).
Decodes the subset nxc2's armv7a backend emits: DP add/adc/sub/sbc/adds/subs/mov
(reg+rotated-imm), movw, mla, umull, ldr/str (imm offset, U-bit sign), push/pop
(STMDB/LDMIA sp!), bx, bl (ARM pc+8 pipeline), svc. Linux EABI: svc, r7=num,
args r0.., exit=1 (code in r0). NO qemu. license_tier: ORIGINAL
dependencies 1 imports · 0 importers
imports: nx_syscalls_x86_64.nx
imported by: nobody (leaf or entry point)
structs
| none |
consts
| 9 | const A7_GUEST: i64 = 16777216 |
| 10 | const A7_MASK: i64 = 0xFFFFFFFF |
| 11 | const A7_SYS_EXIT: i64 = 1 |
functions
| 13 | func a7_ld(mem: *u8, va: i64, width: i64) -> i64 { var v: i64 = 0; var i: i64 = 0; while i < width { v = v | ((mem[va + i] & 0xff) << (i * 8)); i = i + 1 } return v } called by 1: emu_armv7a_run_mem |
| 14 | func a7_st(mem: *u8, va: i64, width: i64, val: i64) -> i64 { var i: i64 = 0; while i < width { mem[va + i] = (val >> (i * 8)) & 0xff; i = i + 1 } return 0 } called by 1: emu_armv7a_run_mem |
| 15 | func a7_sx(v: i64, bits: i64) -> i64 { let m: i64 = 1 << (bits - 1); if (v & m) != 0 { return v - (1 << bits) } return v } called by 1: emu_armv7a_run_mem |
| 16 | func a7_ror(v: i64, n: i64) -> i64 { if n == 0 { return v & A7_MASK } return ((v >> n) | (v << (32 - n))) & A7_MASK } called by 1: emu_armv7a_run_mem |
| 17 | func a7_pop(list: i64) -> i64 { var c: i64 = 0; var i: i64 = 0; while i < 16 { if (list & (1 << i)) != 0 { c = c + 1 } i = i + 1 } return c } called by 1: emu_armv7a_run_mem |
| 19 | func emu_armv7a_run_mem(mem: *u8, mem_size: i64, entry: i64, sp0: i64) -> i64 |
| 129 | func emu_armv7a_run(code: *u8, code_len: i64) -> i64 calls 1: emu_armv7a_run_mem |