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target/arm/arm-semi: Factor out implementation of SYS_FLEN

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Factor out the implementation of SYS_FLEN via the new
function tables.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190916141544.17540-13-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2019-09-16 15:15:41 +01:00
parent 45e88ffc76
commit 1631a7be3a
1 changed files with 22 additions and 10 deletions
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32
target/arm/arm-semi.c
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@ -391,6 +391,7 @@ typedef uint32_t sys_readfn(ARMCPU *cpu, GuestFD *gf,
typedef uint32_t sys_isattyfn(ARMCPU *cpu, GuestFD *gf);
typedef uint32_t sys_seekfn(ARMCPU *cpu, GuestFD *gf,
target_ulong offset);
typedef uint32_t sys_flenfn(ARMCPU *cpu, GuestFD *gf);
static uint32_t host_closefn(ARMCPU *cpu, GuestFD *gf)
{
@ -454,6 +455,17 @@ static uint32_t host_seekfn(ARMCPU *cpu, GuestFD *gf, target_ulong offset)
return 0;
}
static uint32_t host_flenfn(ARMCPU *cpu, GuestFD *gf)
{
CPUARMState *env = &cpu->env;
struct stat buf;
uint32_t ret = set_swi_errno(env, fstat(gf->hostfd, &buf));
if (ret == (uint32_t)-1) {
return -1;
}
return buf.st_size;
}
static uint32_t gdb_closefn(ARMCPU *cpu, GuestFD *gf)
{
return arm_gdb_syscall(cpu, arm_semi_cb, "close,%x", gf->hostfd);
@ -486,12 +498,19 @@ static uint32_t gdb_seekfn(ARMCPU *cpu, GuestFD *gf, target_ulong offset)
gf->hostfd, offset);
}
static uint32_t gdb_flenfn(ARMCPU *cpu, GuestFD *gf)
{
return arm_gdb_syscall(cpu, arm_semi_flen_cb, "fstat,%x,%x",
gf->hostfd, arm_flen_buf(cpu));
}
typedef struct GuestFDFunctions {
sys_closefn *closefn;
sys_writefn *writefn;
sys_readfn *readfn;
sys_isattyfn *isattyfn;
sys_seekfn *seekfn;
sys_flenfn *flenfn;
} GuestFDFunctions;
static const GuestFDFunctions guestfd_fns[] = {
@ -501,6 +520,7 @@ static const GuestFDFunctions guestfd_fns[] = {
.readfn = host_readfn,
.isattyfn = host_isattyfn,
.seekfn = host_seekfn,
.flenfn = host_flenfn,
},
[GuestFDGDB] = {
.closefn = gdb_closefn,
@ -508,6 +528,7 @@ static const GuestFDFunctions guestfd_fns[] = {
.readfn = gdb_readfn,
.isattyfn = gdb_isattyfn,
.seekfn = gdb_seekfn,
.flenfn = gdb_flenfn,
},
};
@ -687,16 +708,7 @@ target_ulong do_arm_semihosting(CPUARMState *env)
return set_swi_errno(env, -1);
}
if (use_gdb_syscalls()) {
return arm_gdb_syscall(cpu, arm_semi_flen_cb, "fstat,%x,%x",
gf->hostfd, arm_flen_buf(cpu));
} else {
struct stat buf;
ret = set_swi_errno(env, fstat(gf->hostfd, &buf));
if (ret == (uint32_t)-1)
return -1;
return buf.st_size;
}
return guestfd_fns[gf->type].flenfn(cpu, gf);
case TARGET_SYS_TMPNAM:
qemu_log_mask(LOG_UNIMP, "%s: SYS_TMPNAM not implemented", __func__);
return -1;