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// ARM specific builtins
const std = @import("std");
const builtin = @import("builtin");
const arch = builtin.cpu.arch;
const common = @import("common.zig");
pub const panic = common.panic;
comptime {
if (!builtin.is_test) {
if (arch.isARM() or arch.isThumb()) {
@export(__aeabi_unwind_cpp_pr0, .{ .name = "__aeabi_unwind_cpp_pr0", .linkage = common.linkage });
@export(__aeabi_unwind_cpp_pr1, .{ .name = "__aeabi_unwind_cpp_pr1", .linkage = common.linkage });
@export(__aeabi_unwind_cpp_pr2, .{ .name = "__aeabi_unwind_cpp_pr2", .linkage = common.linkage });
@export(__aeabi_ldivmod, .{ .name = "__aeabi_ldivmod", .linkage = common.linkage });
@export(__aeabi_uldivmod, .{ .name = "__aeabi_uldivmod", .linkage = common.linkage });
@export(__aeabi_idivmod, .{ .name = "__aeabi_idivmod", .linkage = common.linkage });
@export(__aeabi_uidivmod, .{ .name = "__aeabi_uidivmod", .linkage = common.linkage });
@export(__aeabi_memcpy, .{ .name = "__aeabi_memcpy", .linkage = common.linkage });
@export(__aeabi_memcpy4, .{ .name = "__aeabi_memcpy4", .linkage = common.linkage });
@export(__aeabi_memcpy8, .{ .name = "__aeabi_memcpy8", .linkage = common.linkage });
@export(__aeabi_memmove, .{ .name = "__aeabi_memmove", .linkage = common.linkage });
@export(__aeabi_memmove4, .{ .name = "__aeabi_memmove4", .linkage = common.linkage });
@export(__aeabi_memmove8, .{ .name = "__aeabi_memmove8", .linkage = common.linkage });
@export(__aeabi_memset, .{ .name = "__aeabi_memset", .linkage = common.linkage });
@export(__aeabi_memset4, .{ .name = "__aeabi_memset4", .linkage = common.linkage });
@export(__aeabi_memset8, .{ .name = "__aeabi_memset8", .linkage = common.linkage });
@export(__aeabi_memclr, .{ .name = "__aeabi_memclr", .linkage = common.linkage });
@export(__aeabi_memclr4, .{ .name = "__aeabi_memclr4", .linkage = common.linkage });
@export(__aeabi_memclr8, .{ .name = "__aeabi_memclr8", .linkage = common.linkage });
if (builtin.os.tag == .linux) {
@export(__aeabi_read_tp, .{ .name = "__aeabi_read_tp", .linkage = common.linkage });
}
}
}
}
const __divmodsi4 = @import("int.zig").__divmodsi4;
const __udivmodsi4 = @import("int.zig").__udivmodsi4;
const __divmoddi4 = @import("int.zig").__divmoddi4;
const __udivmoddi4 = @import("int.zig").__udivmoddi4;
extern fn memset(dest: ?[*]u8, c: u8, n: usize) ?[*]u8;
extern fn memcpy(noalias dest: ?[*]u8, noalias src: ?[*]const u8, n: usize) ?[*]u8;
extern fn memmove(dest: ?[*]u8, src: ?[*]const u8, n: usize) ?[*]u8;
pub fn __aeabi_memcpy(dest: [*]u8, src: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memcpy(dest, src, n);
}
pub fn __aeabi_memcpy4(dest: [*]u8, src: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memcpy(dest, src, n);
}
pub fn __aeabi_memcpy8(dest: [*]u8, src: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memcpy(dest, src, n);
}
pub fn __aeabi_memmove(dest: [*]u8, src: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memmove(dest, src, n);
}
pub fn __aeabi_memmove4(dest: [*]u8, src: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memmove(dest, src, n);
}
pub fn __aeabi_memmove8(dest: [*]u8, src: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memmove(dest, src, n);
}
pub fn __aeabi_memset(dest: [*]u8, n: usize, c: u8) callconv(.AAPCS) void {
@setRuntimeSafety(false);
// This is dentical to the standard `memset` definition but with the last
// two arguments swapped
_ = memset(dest, c, n);
}
pub fn __aeabi_memset4(dest: [*]u8, n: usize, c: u8) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memset(dest, c, n);
}
pub fn __aeabi_memset8(dest: [*]u8, n: usize, c: u8) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memset(dest, c, n);
}
pub fn __aeabi_memclr(dest: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memset(dest, 0, n);
}
pub fn __aeabi_memclr4(dest: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memset(dest, 0, n);
}
pub fn __aeabi_memclr8(dest: [*]u8, n: usize) callconv(.AAPCS) void {
@setRuntimeSafety(false);
_ = memset(dest, 0, n);
}
// Dummy functions to avoid errors during the linking phase
pub fn __aeabi_unwind_cpp_pr0() callconv(.AAPCS) void {}
pub fn __aeabi_unwind_cpp_pr1() callconv(.AAPCS) void {}
pub fn __aeabi_unwind_cpp_pr2() callconv(.AAPCS) void {}
// This function can only clobber r0 according to the ABI
pub fn __aeabi_read_tp() callconv(.Naked) void {
@setRuntimeSafety(false);
asm volatile (
\\ mrc p15, 0, r0, c13, c0, 3
\\ bx lr
);
unreachable;
}
// The following functions are wrapped in an asm block to ensure the required
// calling convention is always respected
pub fn __aeabi_uidivmod() callconv(.Naked) void {
@setRuntimeSafety(false);
// Divide r0 by r1; the quotient goes in r0, the remainder in r1
asm volatile (
\\ push {lr}
\\ sub sp, #4
\\ mov r2, sp
\\ bl __udivmodsi4
\\ ldr r1, [sp]
\\ add sp, #4
\\ pop {pc}
::: "memory");
unreachable;
}
pub fn __aeabi_uldivmod() callconv(.Naked) void {
@setRuntimeSafety(false);
// Divide r1:r0 by r3:r2; the quotient goes in r1:r0, the remainder in r3:r2
asm volatile (
\\ push {r4, lr}
\\ sub sp, #16
\\ add r4, sp, #8
\\ str r4, [sp]
\\ bl __udivmoddi4
\\ ldr r2, [sp, #8]
\\ ldr r3, [sp, #12]
\\ add sp, #16
\\ pop {r4, pc}
::: "memory");
unreachable;
}
pub fn __aeabi_idivmod() callconv(.Naked) void {
@setRuntimeSafety(false);
// Divide r0 by r1; the quotient goes in r0, the remainder in r1
asm volatile (
\\ push {lr}
\\ sub sp, #4
\\ mov r2, sp
\\ bl __divmodsi4
\\ ldr r1, [sp]
\\ add sp, #4
\\ pop {pc}
::: "memory");
unreachable;
}
pub fn __aeabi_ldivmod() callconv(.Naked) void {
@setRuntimeSafety(false);
// Divide r1:r0 by r3:r2; the quotient goes in r1:r0, the remainder in r3:r2
asm volatile (
\\ push {r4, lr}
\\ sub sp, #16
\\ add r4, sp, #8
\\ str r4, [sp]
\\ bl __divmoddi4
\\ ldr r2, [sp, #8]
\\ ldr r3, [sp, #12]
\\ add sp, #16
\\ pop {r4, pc}
::: "memory");
unreachable;
}
|
