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Add __aeabi_mem{cmp,clr,set,cpy,move} to compiler-rt

master
vegecode 2019-03-22 22:39:45 -05:00
parent e89b704293
commit 310f91fb4f
1 changed files with 121 additions and 0 deletions
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121
std/special/compiler_rt.zig
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@ -82,6 +82,26 @@ comptime {
@export("__aeabi_uldivmod", __aeabi_uldivmod, linkage);
@export("__aeabi_uidivmod", __aeabi_uidivmod, linkage);
@export("__aeabi_uidiv", __udivsi3, linkage);
@export("__aeabi_memcpy", __aeabi_memcpy, linkage);
@export("__aeabi_memcpy4", __aeabi_memcpy, linkage);
@export("__aeabi_memcpy8", __aeabi_memcpy, linkage);
@export("__aeabi_memmove", __aeabi_memmove, linkage);
@export("__aeabi_memmove4", __aeabi_memmove, linkage);
@export("__aeabi_memmove8", __aeabi_memmove, linkage);
@export("__aeabi_memset", __aeabi_memset, linkage);
@export("__aeabi_memset4", __aeabi_memset, linkage);
@export("__aeabi_memset8", __aeabi_memset, linkage);
@export("__aeabi_memclr", __aeabi_memclr, linkage);
@export("__aeabi_memclr4", __aeabi_memclr, linkage);
@export("__aeabi_memclr8", __aeabi_memclr, linkage);
@export("__aeabi_memcmp", __aeabi_memcmp, linkage);
@export("__aeabi_memcmp4", __aeabi_memcmp, linkage);
@export("__aeabi_memcmp8", __aeabi_memcmp, linkage);
}
if (builtin.os == builtin.Os.windows) {
switch (builtin.arch) {
@ -187,6 +207,17 @@ const is_arm_arch = switch (builtin.arch) {
else => false,
};
const is_arm_32 = is_arm_arch and !is_arm_64;
const use_thumb_1 = is_arm_32 and switch (builtin.arch.arm) {
builtin.Arch.Arm32.v6,
builtin.Arch.Arm32.v6m,
builtin.Arch.Arm32.v6k,
builtin.Arch.Arm32.v6t2,
=> true,
else => false,
};
nakedcc fn __aeabi_uidivmod() void {
@setRuntimeSafety(false);
asm volatile (
@ -203,6 +234,96 @@ nakedcc fn __aeabi_uidivmod() void {
);
}
nakedcc fn __aeabi_memcpy() noreturn {
@setRuntimeSafety(false);
if (use_thumb_1) {
asm volatile (
\\ push {r7, lr}
\\ bl memcpy
\\ pop {r7, pc}
);
} else {
asm volatile (
\\ b memcpy
);
}
unreachable;
}
nakedcc fn __aeabi_memmove() noreturn {
@setRuntimeSafety(false);
if (use_thumb_1) {
asm volatile (
\\ push {r7, lr}
\\ bl memmove
\\ pop {r7, pc}
);
} else {
asm volatile (
\\ b memmove
);
}
unreachable;
}
nakedcc fn __aeabi_memset() noreturn {
@setRuntimeSafety(false);
if (use_thumb_1) {
asm volatile (
\\ mov r3, r1
\\ mov r1, r2
\\ mov r2, r3
\\ push {r7, lr}
\\ b memset
\\ pop {r7, pc}
);
} else {
asm volatile (
\\ mov r3, r1
\\ mov r1, r2
\\ mov r2, r3
\\ b memset
);
}
unreachable;
}
nakedcc fn __aeabi_memclr() noreturn {
@setRuntimeSafety(false);
if (use_thumb_1) {
asm volatile (
\\ mov r2, r1
\\ movs r1, #0
\\ push {r7, lr}
\\ bl memset
\\ pop {r7, pc}
);
} else {
asm volatile (
\\ mov r2, r1
\\ movs r1, #0
\\ b memset
);
}
unreachable;
}
nakedcc fn __aeabi_memcmp() noreturn {
@setRuntimeSafety(false);
if (use_thumb_1) {
asm volatile (
\\ push {r7, lr}
\\ bl memcmp
\\ pop {r7, pc}
);
} else {
asm volatile (
\\ b memcmp
);
}
unreachable;
}
// _chkstk (_alloca) routine - probe stack between %esp and (%esp-%eax) in 4k increments,
// then decrement %esp by %eax. Preserves all registers except %esp and flags.
// This routine is windows specific