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target-arm: Fix errors in decode of M profile CPS 

Fix errors in the decode of M profile CPS:
 * the decode of the I (affects PRIMASK) and F (affects FAULTMASK)
   bits was reversed
 * the FAULTMASK system register number is 19, not 17

This fixes an issue reported as LP:913925.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2012-01-13 17:25:08 +00:00
parent 6b620ca3b0
commit d3cb6e2b06
1 changed files with 4 additions and 4 deletions
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8
target-arm/translate.c
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@ -9710,15 +9710,15 @@ static void disas_thumb_insn(CPUState *env, DisasContext *s)
break;
if (IS_M(env)) {
tmp = tcg_const_i32((insn & (1 << 4)) != 0);
/* PRIMASK */
/* FAULTMASK */
if (insn & 1) {
addr = tcg_const_i32(16);
addr = tcg_const_i32(19);
gen_helper_v7m_msr(cpu_env, addr, tmp);
tcg_temp_free_i32(addr);
}
/* FAULTMASK */
/* PRIMASK */
if (insn & 2) {
addr = tcg_const_i32(17);
addr = tcg_const_i32(16);
gen_helper_v7m_msr(cpu_env, addr, tmp);
tcg_temp_free_i32(addr);
}