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- Import GME fix to critical security bug.

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Details at the following link: https://scarybeastsecurity.blogspot.com/2016/12/redux-compromising-linux-using-snes.html .
This commit is contained in:
Edoardo Prezioso 2016-12-16 16:30:21 +01:00 committed by Christoph Oelckers
parent 7ca5851f78
commit 7aaa03d3e0
1 changed files with 6 additions and 5 deletions
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11
game-music-emu/gme/Spc_Cpu.h
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@ -76,8 +76,8 @@ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
// TODO: remove non-wrapping versions?
#define SPC_NO_SP_WRAPAROUND 0
#define SET_SP( v ) (sp = ram + 0x101 + (v))
#define GET_SP() (int(sp - 0x101 - ram))
#define SET_SP( v ) (sp = ram + 0x101 + ((uint8_t) v))
#define GET_SP() (uint8_t) (sp - 0x101 - ram)
#if SPC_NO_SP_WRAPAROUND
#define PUSH16( v ) (sp -= 2, SET_LE16( sp, v ))
@ -485,7 +485,7 @@ loop:
case 0xAF: // MOV (X)+,A
WRITE_DP( 0, x, a + no_read_before_write );
x++;
x = (uint8_t) (x + 1);
goto loop;
// 5. 8-BIT LOGIC OPERATION COMMANDS
@ -808,7 +808,7 @@ loop:
unsigned temp = y * a;
a = (uint8_t) temp;
nz = ((temp >> 1) | temp) & 0x7F;
y = temp >> 8;
y = (uint8_t) (temp >> 8);
nz |= y;
goto loop;
}
@ -838,6 +838,7 @@ loop:
nz = (uint8_t) a;
a = (uint8_t) a;
y = (uint8_t) y;
goto loop;
}
@ -1004,7 +1005,7 @@ loop:
case 0x7F: // RET1
temp = *sp;
SET_PC( GET_LE16( sp + 1 ) );
sp += 3;
SET_SP(GET_SP() + 3);
goto set_psw;
case 0x8E: // POP PSW
POP( temp );