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author | Richard Henderson <rth@twiddle.net> | 2011-10-17 10:42:49 -0700 |
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committer | Richard Henderson <rth@twiddle.net> | 2011-10-26 13:55:26 -0700 |
commit | 30038fd81808f7c3bca92be2369e74c8ca7b3d69 (patch) | |
tree | bf718259c3d5bcc3e4f8605dbe9828c739be345d /gdbstub.c | |
parent | 45c7b743cda3e87e528516ac1dd039d5932433a3 (diff) | |
download | qemu-30038fd81808f7c3bca92be2369e74c8ca7b3d69.zip qemu-30038fd81808f7c3bca92be2369e74c8ca7b3d69.tar.gz qemu-30038fd81808f7c3bca92be2369e74c8ca7b3d69.tar.bz2 |
target-sparc: Change fpr representation to doubles.
This allows a more efficient representation for 64-bit hosts.
It should be about the same for 32-bit hosts, as we can still
access the individual pieces of the double.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'gdbstub.c')
-rw-r--r-- | gdbstub.c | 35 |
1 files changed, 24 insertions, 11 deletions
@@ -814,7 +814,11 @@ static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) #if defined(TARGET_ABI32) || !defined(TARGET_SPARC64) if (n < 64) { /* fprs */ - GET_REG32(*((uint32_t *)&env->fpr[n - 32])); + if (n & 1) { + GET_REG32(env->fpr[(n - 32) / 2].l.lower); + } else { + GET_REG32(env->fpr[(n - 32) / 2].l.upper); + } } /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ switch (n) { @@ -831,15 +835,15 @@ static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) #else if (n < 64) { /* f0-f31 */ - GET_REG32(*((uint32_t *)&env->fpr[n - 32])); + if (n & 1) { + GET_REG32(env->fpr[(n - 32) / 2].l.lower); + } else { + GET_REG32(env->fpr[(n - 32) / 2].l.upper); + } } if (n < 80) { /* f32-f62 (double width, even numbers only) */ - uint64_t val; - - val = (uint64_t)*((uint32_t *)&env->fpr[(n - 64) * 2 + 32]) << 32; - val |= *((uint32_t *)&env->fpr[(n - 64) * 2 + 33]); - GET_REG64(val); + GET_REG64(env->fpr[(n - 32) / 2].ll); } switch (n) { case 80: GET_REGL(env->pc); @@ -878,7 +882,12 @@ static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) #if defined(TARGET_ABI32) || !defined(TARGET_SPARC64) else if (n < 64) { /* fprs */ - *((uint32_t *)&env->fpr[n - 32]) = tmp; + /* f0-f31 */ + if (n & 1) { + env->fpr[(n - 32) / 2].l.lower = tmp; + } else { + env->fpr[(n - 32) / 2].l.upper = tmp; + } } else { /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ switch (n) { @@ -896,12 +905,16 @@ static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) #else else if (n < 64) { /* f0-f31 */ - env->fpr[n] = ldfl_p(mem_buf); + tmp = ldl_p(mem_buf); + if (n & 1) { + env->fpr[(n - 32) / 2].l.lower = tmp; + } else { + env->fpr[(n - 32) / 2].l.upper = tmp; + } return 4; } else if (n < 80) { /* f32-f62 (double width, even numbers only) */ - *((uint32_t *)&env->fpr[(n - 64) * 2 + 32]) = tmp >> 32; - *((uint32_t *)&env->fpr[(n - 64) * 2 + 33]) = tmp; + env->fpr[(n - 32) / 2].ll = tmp; } else { switch (n) { case 80: env->pc = tmp; break; |