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Bug 965240 - ARM simulator: Check that callee saved floating-point registers are preserved. r=nbp

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This commit is contained in:
Douglas Crosher 2014-02-07 08:26:31 +11:00
parent ee59681036
commit 10674b1b25
1 changed files with 55 additions and 0 deletions
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55
js/src/jit/arm/Simulator-arm.cpp
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@ -3926,6 +3926,24 @@ Simulator::callInternal(uint8_t *entry)
int32_t r10_val = get_register(r10);
int32_t r11_val = get_register(r11);
// Remember d8 to d15 which are callee-saved.
uint64_t d8_val;
get_d_register(d8, &d8_val);
uint64_t d9_val;
get_d_register(d9, &d9_val);
uint64_t d10_val;
get_d_register(d10, &d10_val);
uint64_t d11_val;
get_d_register(d11, &d11_val);
uint64_t d12_val;
get_d_register(d12, &d12_val);
uint64_t d13_val;
get_d_register(d13, &d13_val);
uint64_t d14_val;
get_d_register(d14, &d14_val);
uint64_t d15_val;
get_d_register(d15, &d15_val);
// Set up the callee-saved registers with a known value. To be able to check
// that they are preserved properly across JS execution.
int32_t callee_saved_value = uint32_t(icount_);
@ -3938,6 +3956,16 @@ Simulator::callInternal(uint8_t *entry)
set_register(r10, callee_saved_value);
set_register(r11, callee_saved_value);
uint64_t callee_saved_value_d = uint64_t(icount_);
set_d_register(d8, &callee_saved_value_d);
set_d_register(d9, &callee_saved_value_d);
set_d_register(d10, &callee_saved_value_d);
set_d_register(d11, &callee_saved_value_d);
set_d_register(d12, &callee_saved_value_d);
set_d_register(d13, &callee_saved_value_d);
set_d_register(d14, &callee_saved_value_d);
set_d_register(d15, &callee_saved_value_d);
// Start the simulation
if (Simulator::StopSimAt != -1L)
execute<true>();
@ -3954,6 +3982,24 @@ Simulator::callInternal(uint8_t *entry)
MOZ_ASSERT(callee_saved_value == get_register(r10));
MOZ_ASSERT(callee_saved_value == get_register(r11));
uint64_t value;
get_d_register(d8, &value);
MOZ_ASSERT(callee_saved_value_d == value);
get_d_register(d9, &value);
MOZ_ASSERT(callee_saved_value_d == value);
get_d_register(d10, &value);
MOZ_ASSERT(callee_saved_value_d == value);
get_d_register(d11, &value);
MOZ_ASSERT(callee_saved_value_d == value);
get_d_register(d12, &value);
MOZ_ASSERT(callee_saved_value_d == value);
get_d_register(d13, &value);
MOZ_ASSERT(callee_saved_value_d == value);
get_d_register(d14, &value);
MOZ_ASSERT(callee_saved_value_d == value);
get_d_register(d15, &value);
MOZ_ASSERT(callee_saved_value_d == value);
// Restore callee-saved registers with the original value.
set_register(r4, r4_val);
set_register(r5, r5_val);
@ -3963,6 +4009,15 @@ Simulator::callInternal(uint8_t *entry)
set_register(r9, r9_val);
set_register(r10, r10_val);
set_register(r11, r11_val);
set_d_register(d8, &d8_val);
set_d_register(d9, &d9_val);
set_d_register(d10, &d10_val);
set_d_register(d11, &d11_val);
set_d_register(d12, &d12_val);
set_d_register(d13, &d13_val);
set_d_register(d14, &d14_val);
set_d_register(d15, &d15_val);
}
int64_t