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Implement loading i8

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This commit is contained in:
Rerumu 2021-11-17 01:28:57 -05:00
parent 816931b886
commit 55dbf8ee32
2 changed files with 10 additions and 0 deletions
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2
runtime/luajit.lua
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@ -7,6 +7,7 @@ local module = {}
local vla_u8 = ffi.typeof('uint8_t[?]') local vla_u8 = ffi.typeof('uint8_t[?]')
local ptr_i8 = ffi.typeof('int8_t *')
local ptr_i64 = ffi.typeof('int64_t *') local ptr_i64 = ffi.typeof('int64_t *')
local ptr_i32 = ffi.typeof('int32_t *') local ptr_i32 = ffi.typeof('int32_t *')
@ -105,6 +106,7 @@ do
module.load = load module.load = load
module.store = store module.store = store
function load.i32_i8(memory, addr) return ffi.cast(ptr_i8, memory.data)[addr] end
function load.i32_u8(memory, addr) return memory.data[addr] end function load.i32_u8(memory, addr) return memory.data[addr] end
function load.i32(memory, addr) return ffi.cast(ptr_i32, memory.data + addr)[0] end function load.i32(memory, addr) return ffi.cast(ptr_i32, memory.data + addr)[0] end
function load.i64(memory, addr) return ffi.cast(ptr_i64, memory.data + addr)[0] end function load.i64(memory, addr) return ffi.cast(ptr_i64, memory.data + addr)[0] end

8
runtime/luau.lua
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@ -130,6 +130,14 @@ do
memory.data[adjust] = bit32.bor(lhs, rhs) memory.data[adjust] = bit32.bor(lhs, rhs)
end end
function load.i32_i8(memory, addr)
local b = load_byte(memory, addr)
if b > 0x7F then b = b - 0x100 end
return b
end
load.i32_u8 = load_byte load.i32_u8 = load_byte
function load.i32(memory, addr) function load.i32(memory, addr)