mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-13 21:08:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

compiler-rt: More division intrinsics

Browse Source
This commit is contained in:
LemonBoy 2019-05-08 22:30:20 +02:00
parent 917103710e
commit c00167e91a
1 changed files with 39 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
std/special/compiler_rt.zig
View File

@ -111,6 +111,7 @@ comptime {
@export("__udivmoddi4", @import("compiler_rt/udivmoddi4.zig").__udivmoddi4, linkage);
@export("__popcountdi2", @import("compiler_rt/popcountdi2.zig").__popcountdi2, linkage);
@export("__divmoddi4", __divmoddi4, linkage);
@export("__divsi3", __divsi3, linkage);
@export("__divdi3", __divdi3, linkage);
@export("__udivsi3", __udivsi3, linkage);
@ -126,10 +127,11 @@ comptime {
@export("__negdf2", @import("compiler_rt/negXf2.zig").__negdf2, linkage);
if (is_arm_arch and !is_arm_64) {
@export("__aeabi_ldivmod", __aeabi_ldivmod, linkage);
@export("__aeabi_uldivmod", __aeabi_uldivmod, linkage);
@export("__aeabi_idiv", __divsi3, linkage);
@export("__aeabi_idivmod", __divmodsi4, linkage);
@export("__aeabi_idivmod", __aeabi_idivmod, linkage);
@export("__aeabi_uidiv", __udivsi3, linkage);
@export("__aeabi_uidivmod", __aeabi_uidivmod, linkage);
@ -256,6 +258,14 @@ pub fn panic(msg: []const u8, error_return_trace: ?*builtin.StackTrace) noreturn
}
}
extern fn __divmoddi4(a: i64, b: i64, rem: *i64) i64 {
@setRuntimeSafety(is_test);
const d = __divdi3(a, b);
rem.* = a -% (d *% b);
return d;
}
extern fn __divdi3(a: i64, b: i64) i64 {
@setRuntimeSafety(is_test);
@ -296,14 +306,35 @@ extern fn __umoddi3(a: u64, b: u64) u64 {
return r;
}
const AeabiUlDivModResult = extern struct {
quot: u64,
rem: u64,
};
extern fn __aeabi_uldivmod(numerator: u64, denominator: u64) AeabiUlDivModResult {
extern fn __aeabi_uidivmod(n: u32, d: u32) extern struct{q: u32, r: u32} {
@setRuntimeSafety(is_test);
var result: AeabiUlDivModResult = undefined;
result.quot = __udivmoddi4(numerator, denominator, &result.rem);
var result: @typeOf(__aeabi_uidivmod).ReturnType = undefined;
result.q = __udivmodsi4(n, d, &result.r);
return result;
}
extern fn __aeabi_uldivmod(n: u64, d: u64) extern struct{q: u64, r: u64} {
@setRuntimeSafety(is_test);
var result: @typeOf(__aeabi_uldivmod).ReturnType = undefined;
result.q = __udivmoddi4(n, d, &result.r);
return result;
}
extern fn __aeabi_idivmod(n: i32, d: i32) extern struct{q: i32, r: i32} {
@setRuntimeSafety(is_test);
var result: @typeOf(__aeabi_idivmod).ReturnType = undefined;
result.q = __divmodsi4(n, d, &result.r);
return result;
}
extern fn __aeabi_ldivmod(n: i64, d: i64) extern struct{q: i64, r:i64} {
@setRuntimeSafety(is_test);
var result: @typeOf(__aeabi_ldivmod).ReturnType = undefined;
result.q = __divmoddi4(n, d, &result.r);
return result;
}
@ -397,22 +428,6 @@ test "usesThumb1" {
//etc.
}
nakedcc fn __aeabi_uidivmod() void {
@setRuntimeSafety(false);
asm volatile (
\\ push { lr }
\\ sub sp, sp, #4
\\ mov r2, sp
\\ bl __udivmodsi4
\\ ldr r1, [sp]
\\ add sp, sp, #4
\\ pop { pc }
:
:
: "r2", "r1"
);
}
nakedcc fn __aeabi_memcpy() noreturn {
@setRuntimeSafety(false);
if (use_thumb_1) {