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| author | Helge Deller <deller@gmx.de> | 2025-05-17 13:20:17 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2025-05-17 13:20:17 +0200 |
| commit | b4b49cf39dba5f993ad925f204cb820aacfc8e45 (patch) | |
| tree | 9a84550fba413444704fd5e8c4a28459fc7b0bc2 | |
| parent | 923976dfe367b0bfed45ff660c369f3fe65604a7 (diff) | |
| download | qemu-b4b49cf39dba5f993ad925f204cb820aacfc8e45.zip qemu-b4b49cf39dba5f993ad925f204cb820aacfc8e45.tar.gz qemu-b4b49cf39dba5f993ad925f204cb820aacfc8e45.tar.bz2 | |
linux-user/hppa: Send proper si_code on SIGFPE exception
Improve the linux-user emulation to send the correct si_code depending
on overflow (TARGET_FPE_FLTOVF), underflow (TARGET_FPE_FLTUND), ...
Note that the hardware stores the relevant flags in FP exception
register #1, which is actually the lower 32-bits of the 64-bit fr[0]
register in qemu.
Signed-off-by: Helge Deller <deller@gmx.de>
| -rw-r--r-- | linux-user/hppa/cpu_loop.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/linux-user/hppa/cpu_loop.c b/linux-user/hppa/cpu_loop.c index 890e758..9abaad5 100644 --- a/linux-user/hppa/cpu_loop.c +++ b/linux-user/hppa/cpu_loop.c @@ -112,7 +112,7 @@ static abi_ulong hppa_lws(CPUHPPAState *env) void cpu_loop(CPUHPPAState *env) { CPUState *cs = env_cpu(env); - abi_ulong ret; + abi_ulong ret, si_code = 0; int trapnr; while (1) { @@ -169,7 +169,15 @@ void cpu_loop(CPUHPPAState *env) force_sig_fault(TARGET_SIGFPE, TARGET_FPE_CONDTRAP, env->iaoq_f); break; case EXCP_ASSIST: - force_sig_fault(TARGET_SIGFPE, 0, env->iaoq_f); + #define set_si_code(mask, val) \ + if (env->fr[0] & mask) { si_code = val; } + set_si_code(R_FPSR_FLG_I_MASK, TARGET_FPE_FLTRES); + set_si_code(R_FPSR_FLG_U_MASK, TARGET_FPE_FLTUND); + set_si_code(R_FPSR_FLG_O_MASK, TARGET_FPE_FLTOVF); + set_si_code(R_FPSR_FLG_Z_MASK, TARGET_FPE_FLTDIV); + set_si_code(R_FPSR_FLG_V_MASK, TARGET_FPE_FLTINV); + #undef set_si_code + force_sig_fault(TARGET_SIGFPE, si_code, env->iaoq_f); break; case EXCP_BREAK: force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->iaoq_f); |