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inline assembly: improve everywhere

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Ciro Santilli 六四事件 法轮功
2019-02-25 00:00:00 +00:00
parent 7ec28d6808
commit a30ed0f047
5 changed files with 62 additions and 38 deletions
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11
userland/arch/aarch64/asm_hello.c
View File

@@ -2,7 +2,12 @@
#include <inttypes.h>
int main(void) {
register uint32_t x0 __asm__ ("x0");
__asm__ ("mov x0, #1;" : : : "%x0");
assert(x0 == 1);
uint32_t myvar = 1;
__asm__ (
"add %[myvar], %[myvar], 1;"
: [myvar] "=r" (myvar)
:
:
);
assert(myvar == 2);
}

8
userland/arch/x86_64/asm_hello.c
View File

@@ -5,11 +5,11 @@ int main(void) {
uint32_t in = 1;
uint32_t out = 0;
__asm__ (
"movl %1, %%eax;"
"mov %[in], %%eax;"
"inc %%eax;"
"movl %%eax, %0"
: "=m" (out)
: "m" (in)
"mov %%eax, %[out]"
: [out] "=g" (out)
: [in] "g" (in)
: "%eax"
);
assert(out == in + 1);

20
userland/m5ops.h
View File

@@ -4,44 +4,44 @@
#if defined(__arm__)
static void m5_checkpoint(void)
{
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x43 << 16);");
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x43 << 16);" : : : "r0", "r1", "r2", "r3");
};
static void m5_dumpstats(void)
{
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x41 << 16);");
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x41 << 16);" : : : "r0", "r1", "r2", "r3");
};
static void m5_exit()
{
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; .inst 0xEE000110 | (0x21 << 16);");
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; .inst 0xEE000110 | (0x21 << 16);" : : : "r0", "r1");
};
static void m5_fail_1(void)
{
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #1; mov r3, #0; .inst 0xEE000110 | (0x22 << 16);");
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #1; mov r3, #0; .inst 0xEE000110 | (0x22 << 16);" : : : "r0", "r1", "r2", "r3");
};
static void m5_resetstats(void)
{
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x40 << 16);");
__asm__ __volatile__ ("mov r0, #0; mov r1, #0; mov r2, #0; mov r3, #0; .inst 0xEE000110 | (0x40 << 16);" : : : "r0", "r1", "r2", "r3");
};
#elif defined(__aarch64__)
static void m5_checkpoint(void)
{
__asm__ __volatile__ ("mov x0, #0; mov x1, #0; .inst 0xFF000110 | (0x43 << 16);");
__asm__ __volatile__ ("mov x0, #0; mov x1, #0; .inst 0xFF000110 | (0x43 << 16);" : : : "x0", "x1");
};
static void m5_dumpstats(void)
{
__asm__ __volatile__ ("mov x0, #0; mov x1, #0; .inst 0xFF000110 | (0x41 << 16);");
__asm__ __volatile__ ("mov x0, #0; mov x1, #0; .inst 0xFF000110 | (0x41 << 16);" : : : "x0", "x1");
};
static void m5_exit(void)
{
__asm__ __volatile__ ("mov x0, #0; .inst 0XFF000110 | (0x21 << 16);");
__asm__ __volatile__ ("mov x0, #0; .inst 0XFF000110 | (0x21 << 16);" : : : "x0");
};
static void m5_fail_1(void)
{
__asm__ __volatile__ ("mov x0, #0; mov x1, #1; .inst 0xFF000110 | (0x22 << 16);");
__asm__ __volatile__ ("mov x0, #0; mov x1, #1; .inst 0xFF000110 | (0x22 << 16);" : : : "x0", "x1");
};
static void m5_resetstats(void)
{
__asm__ __volatile__ ("mov x0, #0; mov x1, #0; .inst 0XFF000110 | (0x40 << 16);");
__asm__ __volatile__ ("mov x0, #0; mov x1, #0; .inst 0XFF000110 | (0x40 << 16);" : : : "x0", "x1");
};
#else
static void m5_checkpoint(void) {};