diff options
Diffstat (limited to 'arm64-gen.c')
| -rw-r--r-- | arm64-gen.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arm64-gen.c b/arm64-gen.c index 0c435d9..fa0e748 100644 --- a/arm64-gen.c +++ b/arm64-gen.c @@ -1820,15 +1820,23 @@ ST_FUNC void gen_clear_cache(void) } ST_FUNC void gen_vla_sp_save(int addr) { - tcc_error("variable length arrays unsupported for this target"); + uint32_t r = intr(get_reg(RC_INT)); + o(0x910003e0 | r); // mov x(r),sp + arm64_strx(3, r, 29, addr); } ST_FUNC void gen_vla_sp_restore(int addr) { - tcc_error("variable length arrays unsupported for this target"); + uint32_t r = intr(get_reg(RC_INT)); + arm64_ldrx(0, 3, r, 29, addr); + o(0x9100001f | r << 5); // mov sp,x(r) } ST_FUNC void gen_vla_alloc(CType *type, int align) { - tcc_error("variable length arrays unsupported for this target"); + uint32_t r = intr(gv(RC_INT)); + o(0x91003c00 | r | r << 5); // add x(r),x(r),#15 + o(0x927cec00 | r | r << 5); // bic x(r),x(r),#15 + o(0xcb2063ff | r << 16); // sub sp,sp,x(r) + vpop(); } /* end of A64 code generator */ |