mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-28 08:12:28 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Make improvements

Browse source 
- Emulator can now test the αcτµαlly pδrταblε εxεcµταblε bootloader

- Whipped up a webserver named redbean. It services 150k requests per
  second on a single core. Bundling assets inside zip enables extremely
  fast serving for two reasons. The first is that zip central directory
  lookups go faster than stat() system calls. The second is that both
  zip and gzip content-encoding use DEFLATE, therefore, compressed
  responses can be served via the sendfile() system call which does an
  in-kernel copy directly from the zip executable structure. Also note
  that red bean zip executables can be deployed easily to all platforms,
  since these native executables work on Linux, Mac, BSD, and Windows.

- Address sanitizer now works very well
This commit is contained in:
Justine Tunney 2020-09-06 21:39:00 -07:00
parent 7327c345f9
commit 416fd86676
230 changed files with 9835 additions and 5682 deletions
Download patch file Download diff file Expand all files Collapse all files

48
tool/build/lib/disinst.c
View file

@ -23,6 +23,7 @@
#include "tool/build/lib/dis.h"
#include "tool/build/lib/modrm.h"
static const char kJcxz[3][6] = {"jcxz", "jecxz", "jrcxz"};
static const char kAluOp[8][4] = {"add", "or", "adc", "sbb",
"and", "sub", "xor", "cmp"};
static const char kBitOp[8][4] = {"rol", "ror", "rcl", "rcr",
@ -33,7 +34,7 @@ static bool IsProbablyByteOp(struct XedDecodedInst *x) {
}
static int IsRepOpcode(struct DisBuilder b) {
switch (b.xedd->op.opcode & ~1u) {
switch (b.xedd->op.opcode & ~1) {
case 0x6C: /* INS */
return 1;
case 0x6E: /* OUTS */
@ -86,35 +87,36 @@ static char *DisBranchTaken(struct DisBuilder b, char *p) {
static char *DisName(struct DisBuilder b, char *bp, const char *name,
bool ambiguous) {
char *p, *np;
uint32_t rde;
bool notbyte, notlong, wantsuffix, wantsuffixsd;
p = bp;
rde = b.xedd->op.rde;
if (b.xedd->op.lock) p = stpcpy(p, "lock ");
p = DisRepPrefix(b, p);
if (tinystrcmp(name, "BIT") == 0) {
p = stpcpy(p, kBitOp[ModrmReg(b.xedd->op.rde)]);
p = stpcpy(p, kBitOp[ModrmReg(rde)]);
} else if (tinystrcmp(name, "CALL") == 0) {
p = stpcpy(p, "call");
} else if (tinystrcmp(name, "JMP") == 0) {
p = stpcpy(p, "jmp");
} else if (tinystrcmp(name, "jcxz") == 0) {
p = stpcpy(p, Asz(b.xedd->op.rde) ? "jecxz" : "jrcxz");
p = stpcpy(p, kJcxz[Eamode(rde)]);
p = DisBranchTaken(b, p);
} else if (tinystrcmp(name, "loop") == 0) {
p = stpcpy(p, Asz(b.xedd->op.rde) ? "loopl" : "loop");
p = DisBranchTaken(b, p);
} else if (tinystrcmp(name, "loope") == 0) {
p = stpcpy(p, Asz(b.xedd->op.rde) ? "loopel" : "loope");
p = DisBranchTaken(b, p);
} else if (tinystrcmp(name, "loopne") == 0) {
p = stpcpy(p, Asz(b.xedd->op.rde) ? "loopnel" : "loopne");
} else if (tinystrcmp(name, "loop") == 0 || tinystrcmp(name, "loope") == 0 ||
tinystrcmp(name, "loopne") == 0) {
p = stpcpy(p, name);
if (Eamode(rde) != Mode(rde)) {
*p++ = "wl"[Eamode(rde)];
*p = '\0';
}
p = DisBranchTaken(b, p);
} else if (tinystrcmp(name, "cwtl") == 0) {
if (Osz(b.xedd->op.rde)) name = "cbtw";
if (Rexw(b.xedd->op.rde)) name = "cltq";
if (Osz(rde)) name = "cbtw";
if (Rexw(rde)) name = "cltq";
p = stpcpy(p, name);
} else if (tinystrcmp(name, "cltd") == 0) {
if (Osz(b.xedd->op.rde)) name = "cwtd";
if (Rexw(b.xedd->op.rde)) name = "cqto";
if (Osz(rde)) name = "cwtd";
if (Rexw(rde)) name = "cqto";
p = stpcpy(p, name);
} else {
notbyte = false;
@ -125,13 +127,13 @@ static char *DisName(struct DisBuilder b, char *bp, const char *name,
*p++ = *np;
}
if (tinystrcmp(name, "ALU") == 0) {
p = stpcpy(p, kAluOp[ModrmReg(b.xedd->op.rde)]);
p = stpcpy(p, kAluOp[ModrmReg(rde)]);
} else if (tinystrcmp(np, "WLQ") == 0) {
notbyte = true;
wantsuffix = true;
} else if (tinystrcmp(np, "WQ") == 0) {
notbyte = true;
notlong = true;
notlong = Eamode(rde) != XED_MODE_REAL;
wantsuffix = true;
} else if (tinystrcmp(np, "LQ") == 0 || tinystrcmp(np, "WL") == 0) {
notbyte = true;
@ -140,21 +142,23 @@ static char *DisName(struct DisBuilder b, char *bp, const char *name,
notbyte = true;
wantsuffixsd = true;
} else if (tinystrcmp(np, "ABS") == 0) {
if (Rexw(b.xedd->op.rde)) p = stpcpy(p, "abs");
if (Rexw(rde)) p = stpcpy(p, "abs");
} else if (tinystrcmp(np, "BT") == 0) {
p = DisBranchTaken(b, p);
}
if (wantsuffixsd) {
if (Osz(b.xedd->op.rde)) {
if (Osz(rde)) {
*p++ = 'd';
} else {
*p++ = 's';
}
} else if (wantsuffix || (ambiguous && !startswith(name, "f") &&
!startswith(name, "set"))) {
if (Osz(b.xedd->op.rde)) {
*p++ = 'w';
} else if (Rexw(b.xedd->op.rde)) {
if (Osz(rde)) {
if (Eamode(rde) != XED_MODE_REAL) {
*p++ = 'w';
}
} else if (Rexw(rde)) {
*p++ = 'q';
} else if (ambiguous && !notbyte && IsProbablyByteOp(b.xedd)) {
*p++ = 'b';