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format: Minor non-functional changes

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This commit is contained in:
Alexis Engelke
2021-01-10 18:55:05 +01:00
parent cb90c2c54d
commit 8561d77c91
1 changed files with 36 additions and 40 deletions
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76
format.c
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@@ -66,18 +66,6 @@ reg_name(unsigned rt, unsigned ri, unsigned size)
return ri < max ? table[ri] : "(inv-idx)";
}
#define FD_DECODE_TABLE_STRTAB1
static const char* _mnemonic_str =
#include <fadec-table.inc>
;
#undef FD_DECODE_TABLE_STRTAB1
#define FD_DECODE_TABLE_STRTAB2
static const uint16_t _mnemonic_offs[] = {
#include <fadec-table.inc>
};
#undef FD_DECODE_TABLE_STRTAB2
static char*
fd_strplcpy(char* dst, const char* src, size_t size)
{
@@ -89,21 +77,34 @@ fd_strplcpy(char* dst, const char* src, size_t size)
}
static char*
fd_format_hex(uint64_t val, char buf[static 17]) {
unsigned idx = 17;
fd_format_hex(uint64_t val, char buf[static 19]) {
unsigned idx = 19;
buf[--idx] = 0;
do {
buf[--idx] = "0123456789abcdef"[val % 16];
val /= 16;
} while (val);
buf[--idx] = 'x', buf[--idx] = '0';
return &buf[idx];
}
const char*
fdi_name(FdInstrType ty) {
if (ty >= sizeof(_mnemonic_offs) / sizeof(_mnemonic_offs[0]))
#define FD_DECODE_TABLE_STRTAB1
static const char* mnemonic_str =
#include <fadec-table.inc>
;
#undef FD_DECODE_TABLE_STRTAB1
#define FD_DECODE_TABLE_STRTAB2
static const uint16_t mnemonic_offs[] = {
#include <fadec-table.inc>
};
#undef FD_DECODE_TABLE_STRTAB2
if (ty >= sizeof(mnemonic_offs) / sizeof(mnemonic_offs[0]))
return "(invalid)";
return &_mnemonic_str[_mnemonic_offs[ty]];
return &mnemonic_str[mnemonic_offs[ty]];
}
void
@@ -239,7 +240,7 @@ fd_format_abs(const FdInstr* instr, uint64_t addr, char* buffer, size_t len)
FdOpType op_type = FD_OP_TYPE(instr, i);
if (op_type == FD_OT_NONE)
break;
buf = fd_strplcpy(buf, ", " + (i == 0), end-buf);
buf = fd_strplcpy(buf, &", "[i == 0], end-buf);
unsigned size = FD_OP_SIZE(instr, i);
@@ -287,17 +288,22 @@ fd_format_abs(const FdInstr* instr, uint64_t addr, char* buffer, size_t len)
break;
default: break;
}
const char* ptrsize = NULL;
switch (size) {
default: break;
case 1: buf = fd_strplcpy(buf, "byte ptr ", end-buf); break;
case 2: buf = fd_strplcpy(buf, "word ptr ", end-buf); break;
case 4: buf = fd_strplcpy(buf, "dword ptr ", end-buf); break;
case 6: buf = fd_strplcpy(buf, "fword ptr ", end-buf); break;
case 8: buf = fd_strplcpy(buf, "qword ptr ", end-buf); break;
case 10: buf = fd_strplcpy(buf, "tbyte ptr ", end-buf); break;
case 16: buf = fd_strplcpy(buf, "xmmword ptr ", end-buf); break;
case 32: buf = fd_strplcpy(buf, "ymmword ptr ", end-buf); break;
case 64: buf = fd_strplcpy(buf, "zmmword ptr ", end-buf); break;
case 1: ptrsize = "byte"; break;
case 2: ptrsize = "word"; break;
case 4: ptrsize = "dword"; break;
case 6: ptrsize = "fword"; break;
case 8: ptrsize = "qword"; break;
case 10: ptrsize = "tbyte"; break;
case 16: ptrsize = "xmmword"; break;
case 32: ptrsize = "ymmword"; break;
case 64: ptrsize = "zmmword"; break;
}
if (ptrsize) {
buf = fd_strplcpy(buf, ptrsize, end-buf);
buf = fd_strplcpy(buf, " ptr ", end-buf);
}
unsigned seg = FD_SEGMENT(instr);
if (seg != FD_REG_NONE) {
@@ -326,12 +332,8 @@ fd_format_abs(const FdInstr* instr, uint64_t addr, char* buffer, size_t len)
disp &= 0xffff;
else if (FD_ADDRSIZE(instr) == 4)
disp &= 0xffffffff;
if (disp || (!has_base && !has_idx)) {
char* fmt = fd_format_hex(disp, tmp + 2);
*--fmt = 'x';
*--fmt = '0';
buf = fd_strplcpy(buf, fmt, end-buf);
}
if (disp || (!has_base && !has_idx))
buf = fd_strplcpy(buf, fd_format_hex(disp, tmp), end-buf);
buf = fd_strplcpy(buf, "]", end-buf);
} else if (op_type == FD_OT_IMM || op_type == FD_OT_OFF) {
size_t immediate = FD_OP_IMM(instr, i);
@@ -358,10 +360,7 @@ fd_format_abs(const FdInstr* instr, uint64_t addr, char* buffer, size_t len)
// immediate is masked below.
break;
}
char* fmt = fd_format_hex(splitimm, tmp + 2);
*--fmt = 'x';
*--fmt = '0';
buf = fd_strplcpy(buf, fmt, end-buf);
buf = fd_strplcpy(buf, fd_format_hex(splitimm, tmp), end-buf);
buf = fd_strplcpy(buf, splitsep, end-buf);
nosplitimm:
@@ -373,10 +372,7 @@ fd_format_abs(const FdInstr* instr, uint64_t addr, char* buffer, size_t len)
immediate &= 0xffff;
else if (size == 4)
immediate &= 0xffffffff;
fmt = fd_format_hex(immediate, tmp + 2);
*--fmt = 'x';
*--fmt = '0';
buf = fd_strplcpy(buf, fmt, end-buf);
buf = fd_strplcpy(buf, fd_format_hex(immediate, tmp), end-buf);
}
}
}